<SEC-DOCUMENT>0001437749-23-005675.txt : 20230307
<SEC-HEADER>0001437749-23-005675.hdr.sgml : 20230307
<ACCEPTANCE-DATETIME>20230307163722
ACCESSION NUMBER:		0001437749-23-005675
CONFORMED SUBMISSION TYPE:	10-K
PUBLIC DOCUMENT COUNT:		96
CONFORMED PERIOD OF REPORT:	20221231
FILED AS OF DATE:		20230307
DATE AS OF CHANGE:		20230307

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			FUEL TECH, INC.
		CENTRAL INDEX KEY:			0000846913
		STANDARD INDUSTRIAL CLASSIFICATION:	INDUSTRIAL & COMMERCIAL FANS & BLOWERS & AIR PURIFYING EQUIP [3564]
		IRS NUMBER:				205657551
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		10-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-33059
		FILM NUMBER:		23713105

	BUSINESS ADDRESS:	
		STREET 1:		27601 BELLA VISTA PARKWAY
		CITY:			WARRENVILLE
		STATE:			IL
		ZIP:			60555
		BUSINESS PHONE:		6308454431

	MAIL ADDRESS:	
		STREET 1:		27601 BELLA VISTA PARKWAY
		CITY:			WARRENVILLE
		STATE:			IL
		ZIP:			60555

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	FUEL TECH N V
		DATE OF NAME CHANGE:	19930510
</SEC-HEADER>
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<TYPE>10-K
<SEQUENCE>1
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<xbrli:context id="d_2021-01-01_2021-12-31_DebtInstrumentAxis-PaycheckProtectionProgramCaresActMember"><xbrli:entity><xbrli:identifier scheme="http://www.sec.gov/CIK">0000846913</xbrli:identifier><xbrli:segment><xbrldi:explicitMember dimension="us-gaap:DebtInstrumentAxis">ftek:PaycheckProtectionProgramCaresActMember</xbrldi:explicitMember></xbrli:segment></xbrli:entity><xbrli:period><xbrli:startDate>2021-01-01</xbrli:startDate><xbrli:endDate>2021-12-31</xbrli:endDate></xbrli:period></xbrli:context>
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<xbrli:context id="d_2021-01-01_2021-12-31_StatementGeographicalAxis-NonUsMember"><xbrli:entity><xbrli:identifier scheme="http://www.sec.gov/CIK">0000846913</xbrli:identifier><xbrli:segment><xbrldi:explicitMember dimension="srt:StatementGeographicalAxis">us-gaap:NonUsMember</xbrldi:explicitMember></xbrli:segment></xbrli:entity><xbrli:period><xbrli:startDate>2021-01-01</xbrli:startDate><xbrli:endDate>2021-12-31</xbrli:endDate></xbrli:period></xbrli:context>
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<xbrli:context id="d_2021-02-11_2021-02-11"><xbrli:entity><xbrli:identifier scheme="http://www.sec.gov/CIK">0000846913</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2021-02-11</xbrli:startDate><xbrli:endDate>2021-02-11</xbrli:endDate></xbrli:period></xbrli:context>
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<xbrli:context id="i_2021-02-11_ClassOfWarrantOrRightAxis-WarrantsIssuedInConnectionWithPrivatePlacementMember"><xbrli:entity><xbrli:identifier scheme="http://www.sec.gov/CIK">0000846913</xbrli:identifier><xbrli:segment><xbrldi:explicitMember dimension="us-gaap:ClassOfWarrantOrRightAxis">ftek:WarrantsIssuedInConnectionWithPrivatePlacementMember</xbrldi:explicitMember></xbrli:segment></xbrli:entity><xbrli:period><xbrli:instant>2021-02-11</xbrli:instant></xbrli:period></xbrli:context>
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</ix:header></div>
  <div>
    &#xa0;
  </div>
  <div><p style="font-family: Times New Roman; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family: Times New Roman; font-size: 10pt; margin: 0pt;"><a href="#toc" style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt">Table of Contents</a></p>
<hr style="height: 3px; color: #000000; background-color: #000000; width: 100%; border: none; margin: 3pt 0" />
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<p style="font-family:'Times New Roman', Times, serif;font-size:18pt;margin:0pt;text-align:center;"><b>UNITED STATES</b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:18pt;margin:0pt;text-align:center;"><b>SECURITIES AND EXCHANGE COMMISSION</b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Washington, D.C. 20549</b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;______________________________</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:18pt;margin:0pt;text-align:center;"><b>Form <ix:nonNumeric name="dei:DocumentType" contextRef="d_2022-01-01_2022-12-31">10-K</ix:nonNumeric></b></p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>(Mark One)</b></p>
<table style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="vertical-align:top;width:5.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><ix:nonNumeric name="dei:DocumentAnnualReport" format="ixt-sec:boolballotbox" contextRef="d_2022-01-01_2022-12-31">&#x2612;</ix:nonNumeric></p> </td><td style="vertical-align:top;width:94.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934</b></p> </td></tr>
</tbody></table>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>For the fiscal year ended: <ix:nonNumeric name="dei:DocumentPeriodEndDate" format="ixt:datemonthdayyearen" contextRef="d_2022-01-01_2022-12-31">December 31, 2022</ix:nonNumeric></b></p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>OR</b></p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<table style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="vertical-align:top;width:5.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><ix:nonNumeric name="dei:DocumentTransitionReport" format="ixt-sec:boolballotbox" contextRef="d_2022-01-01_2022-12-31">&#x2610;</ix:nonNumeric></p> </td><td style="vertical-align:top;width:94.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934</b></p> </td></tr>
</tbody></table>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>For the transition period from </b><span style="text-decoration: underline; "><b>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;</b></span><b> to&#xa0;</b><span style="text-decoration: underline; "><b>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;</b></span></p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Commission File Number <ix:nonNumeric name="dei:EntityFileNumber" contextRef="d_2022-01-01_2022-12-31">001-33059</ix:nonNumeric></b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">______________________________</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;<span style="font-family:Times New Roman;font-size:18pt;"><b>Fuel Tech, Inc.</b></span></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>(Exact name of registrant as specified in its charter)</b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;______________________________</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>
<table style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="vertical-align:top;width:49.6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b><ix:nonNumeric name="dei:EntityIncorporationStateCountryCode" format="ixt-sec:stateprovnameen" contextRef="d_2022-01-01_2022-12-31">Delaware</ix:nonNumeric></b></p> </td><td style="vertical-align:bottom;width:0.8%;">&#xa0;</td><td style="vertical-align:top;width:49.6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b><ix:nonNumeric name="dei:EntityTaxIdentificationNumber" contextRef="d_2022-01-01_2022-12-31">20-5657551</ix:nonNumeric></b></p> </td></tr>
<tr><td style="vertical-align: bottom; width: 49.6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>(State of Incorporation)</b></p> </td><td style="vertical-align:bottom;width:0.8%;">&#xa0;</td><td style="vertical-align:bottom;width:49.6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>(I.R.S. ID)</b></p> </td></tr>
</tbody></table>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Fuel Tech, Inc.</b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b><ix:nonNumeric name="dei:EntityAddressAddressLine1" contextRef="d_2022-01-01_2022-12-31">27601 Bella Vista Parkway</ix:nonNumeric></b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b><ix:nonNumeric name="dei:EntityAddressCityOrTown" contextRef="d_2022-01-01_2022-12-31">Warrenville</ix:nonNumeric>, <ix:nonNumeric name="dei:EntityAddressStateOrProvince" contextRef="d_2022-01-01_2022-12-31">IL</ix:nonNumeric> <ix:nonNumeric name="dei:EntityAddressPostalZipCode" contextRef="d_2022-01-01_2022-12-31">60555-1617</ix:nonNumeric></b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>(<ix:nonNumeric name="dei:CityAreaCode" contextRef="d_2022-01-01_2022-12-31">630</ix:nonNumeric>) <ix:nonNumeric name="dei:LocalPhoneNumber" contextRef="d_2022-01-01_2022-12-31">845-4500</ix:nonNumeric></b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>www.ftek.com</b></p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Securities registered pursuant to Section&#xa0;12(b) of the Act:</b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>
<table style="width: 100%; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; margin-right: 0pt;" cellspacing="0" cellpadding="2"><tbody><tr style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><td style="vertical-align: top; border-color: black black rgb(0, 0, 0); border-style: solid; border-width: 1px; width: 30%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Title of each class</p> </td><td style="vertical-align: top; border-bottom: 1px solid rgb(0, 0, 0); width: 30%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-top: 1px solid black;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Trading Symbol(s)</p> </td><td style="vertical-align: top; border-color: black black rgb(0, 0, 0); border-style: solid; border-width: 1px; width: 40%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Name of each exchange on which registered</p> </td></tr>
<tr style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><td style="vertical-align: top; border-bottom: 1px solid rgb(0, 0, 0); width: 30%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-left: 1px solid black; border-right: 1px solid black;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><ix:nonNumeric name="dei:Security12bTitle" contextRef="d_2022-01-01_2022-12-31">Common Stock</ix:nonNumeric></p> </td><td style="vertical-align: top; border-bottom: 1px solid rgb(0, 0, 0); width: 30%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><ix:nonNumeric name="dei:TradingSymbol" contextRef="d_2022-01-01_2022-12-31">FTEK</ix:nonNumeric></p> </td><td style="vertical-align: top; border-bottom: 1px solid rgb(0, 0, 0); width: 40%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-left: 1px solid black; border-right: 1px solid black;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><ix:nonNumeric name="dei:SecurityExchangeName" format="ixt-sec:exchnameen" contextRef="d_2022-01-01_2022-12-31">NASDAQ</ix:nonNumeric></p> </td></tr>
</tbody></table>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Securities registered pursuant to Section&#xa0;12(g) of the Act: NONE</b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">______________________________</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.&#xa0;&#xa0;&#xa0;&#xa0;Yes&#xa0;&#xa0;&#x2610;&#xa0;&#xa0;&#xa0;&#xa0;<ix:nonNumeric name="dei:EntityWellKnownSeasonedIssuer" contextRef="d_2022-01-01_2022-12-31">No</ix:nonNumeric>&#xa0;&#xa0;&#x2612;</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Indicate by check mark if the registrant is not required to file reports pursuant to Section&#xa0;13 or Section&#xa0;15(d) of the Exchange Act.&#xa0;&#xa0;&#xa0;&#xa0;Yes&#xa0;&#xa0;&#x2610;&#xa0;&#xa0;&#xa0;&#xa0;<ix:nonNumeric name="dei:EntityVoluntaryFilers" contextRef="d_2022-01-01_2022-12-31">No</ix:nonNumeric>&#xa0;&#xa0;&#x2612;</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Indicate by check mark whether the registrant: (1)&#xa0;has filed all reports required to be filed by Section&#xa0;13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2)&#xa0;has been subject to such filing requirements for the past 90 days.&#xa0;&#xa0;&#xa0;&#xa0;<ix:nonNumeric name="dei:EntityCurrentReportingStatus" contextRef="d_2022-01-01_2022-12-31">Yes</ix:nonNumeric>&#xa0;&#xa0;&#x2612;&#xa0;&#xa0;&#xa0;&#xa0;No&#xa0;&#xa0;&#x2610;</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Indicate by check mark whether the registrant has submitted electronically&#xa0;every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (&#xa7;232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).&#xa0;&#xa0;&#xa0;&#xa0;<ix:nonNumeric name="dei:EntityInteractiveDataCurrent" contextRef="d_2022-01-01_2022-12-31">Yes</ix:nonNumeric>&#xa0;&#xa0;&#x2612;&#xa0;&#xa0;&#xa0;&#xa0;No&#xa0;&#xa0;&#x2610;</p>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definitions of &#x201c;large accelerated filer,&#x201d; &#x201c;accelerated filer,&#x201d; &#x201c;smaller reporting company,&#x201d; and &#x201c;emerging growth company&#x201d; in Rule 12b-2 of the Exchange Act.</p>
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<table style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="vertical-align:bottom;width:27.5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Large&#xa0;Accelerated&#xa0;Filer</p> </td><td style="vertical-align:bottom;width:0.8%;">&#xa0;</td><td style="vertical-align:bottom;width:40.4%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#x2610;</p> </td><td style="vertical-align:bottom;width:0.8%;">&#xa0;</td><td style="vertical-align:bottom;width:27.7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Accelerated&#xa0;Filer</p> </td><td style="vertical-align:bottom;width:2.7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#x2610;</p> </td></tr>
<tr><td style="vertical-align:bottom;width:27.5%;">&#xa0;</td><td colspan="2" style="vertical-align:bottom;width:41.2%;">&#xa0;</td><td colspan="2" style="vertical-align:bottom;width:28.5%;">&#xa0;</td><td style="vertical-align:bottom;width:2.7%;">&#xa0;</td></tr>
<tr><td style="vertical-align:bottom;width:27.5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><ix:nonNumeric name="dei:EntityFilerCategory" format="ixt-sec:entityfilercategoryen" contextRef="d_2022-01-01_2022-12-31">Non-accelerated Filer</ix:nonNumeric></p> </td><td style="vertical-align:bottom;width:0.8%;">&#xa0;</td><td style="vertical-align:bottom;width:40.4%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#x2612;</p> </td><td style="vertical-align:bottom;width:0.8%;">&#xa0;</td><td style="vertical-align:bottom;width:27.7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Smaller&#xa0;reporting&#xa0;company</p> </td><td style="vertical-align:bottom;width:2.7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><ix:nonNumeric name="dei:EntitySmallBusiness" format="ixt-sec:boolballotbox" contextRef="d_2022-01-01_2022-12-31">&#x2612;</ix:nonNumeric></p> </td></tr>
<tr><td style="vertical-align:bottom;width:27.5%;">&#xa0;</td><td style="vertical-align:bottom;width:0.8%;">&#xa0;</td><td style="vertical-align:bottom;width:40.4%;">&#xa0;</td><td style="vertical-align:bottom;width:0.8%;">&#xa0;</td><td style="vertical-align:bottom;width:27.7%;">&#xa0;</td><td style="vertical-align:bottom;width:2.7%;">&#xa0;</td></tr>
<tr><td style="vertical-align:bottom;width:27.5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Emerging growth company</p> </td><td style="vertical-align:bottom;width:0.8%;">&#xa0;</td><td style="vertical-align:bottom;width:40.4%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><ix:nonNumeric name="dei:EntityEmergingGrowthCompany" format="ixt-sec:boolballotbox" contextRef="d_2022-01-01_2022-12-31">&#x2610;</ix:nonNumeric></p> </td><td style="vertical-align:bottom;width:0.8%;">&#xa0;</td><td style="vertical-align:bottom;width:27.7%;">&#xa0;</td><td style="vertical-align:bottom;width:2.7%;">&#xa0;</td></tr>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section&#xa0;13(a) of the Exchange Act. &#xa0; &#x2610;</p>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Indicate by check mark whether the registrant has filed a report on and attestation to its management&#x2019;s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.&#xa0; &#xa0; <ix:nonNumeric name="dei:IcfrAuditorAttestationFlag" format="ixt-sec:boolballotbox" contextRef="d_2022-01-01_2022-12-31">&#x2610;</ix:nonNumeric></p>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financials statements of the registrant included in the&#xa0;filing reflect the correction of an error to previously issued financial statements.&#xa0; &#xa0; &#x2610;</p>
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<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to (&#xa7;240.10D-1(b).&#xa0; &#xa0; &#x2610;</p>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).&#xa0;&#xa0;&#xa0;&#xa0;Yes&#xa0;&#xa0;<ix:nonNumeric name="dei:EntityShellCompany" format="ixt-sec:boolballotbox" contextRef="d_2022-01-01_2022-12-31">&#x2610;</ix:nonNumeric>&#xa0;&#xa0;&#xa0;&#xa0;No&#xa0;&#xa0;&#x2612;</p>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">As of June 30,&#xa0;2022, the aggregate market value of the registrant's common stock held by non-affiliates of the registrant was approximatel<span style="background-color:#ffffff;">y $<ix:nonFraction name="dei:EntityPublicFloat" scale="0" unitRef="USD" decimals="INF" format="ixt:numdotdecimal" contextRef="i_2022-06-30">32,215,406</ix:nonFraction>&#xa0;</span>based on the closing sale price as reported on the NASDAQ National Market System.</p>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">As of February 28, 2023, there were <ix:nonFraction name="dei:EntityCommonStockSharesOutstanding" scale="0" unitRef="Share" decimals="INF" format="ixt:numdotdecimal" contextRef="i_2023-02-28">30,296,297</ix:nonFraction> shares of common stock outstanding.</p>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Documents incorporated by reference:</b></p>
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<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Portions of the registrant's definitive Proxy Statement for the 2023 Annual Meeting of Shareholders, which will be filed no later than 120 days after the close of the registrant's fiscal year ended December 31, 2022, are incorporated by reference into Part III of this report.</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b><a id="toc" title="toc" href="#"></a>TABLE OF CONTENTS</b></p>
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      <td style="vertical-align: top; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><a href="#part1" style="-sec-extract:exhibit;"><b>PART I</b></a></p> </td>
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      <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Item 1.</p> </td>
      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item1" style="-sec-extract:exhibit;">Business</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item1">3</a></td>
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      <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Item&#xa0;1A.</p> </td>
      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item1a" style="-sec-extract:exhibit;">Risk Factors</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item1a">7</a></td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item1b" style="-sec-extract:exhibit;">Unresolved Staff Comments</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item1b">9</a></td>
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      <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Item 2.</p> </td>
      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item2" style="-sec-extract:exhibit;">Properties</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item2">9</a></td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item3" style="-sec-extract:exhibit;">Legal Proceedings</a></p> </td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item4" style="-sec-extract:exhibit;">Mine Safety Disclosures</a></p> </td>
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      <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Item 5.</p> </td>
      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item5" style="-sec-extract:exhibit;">Market for Registrant&#x2019;s Common Equity, Related Stockholder Matters and Issuer Purchase of Equity Securities</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item5">10</a></td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item6" style="-sec-extract:exhibit;">Reserved</a></p> </td>
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      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item7">11</a></td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item7a" style="-sec-extract:exhibit;">Quantitative and Qualitative Disclosures about Market Risk</a></p> </td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item9" style="-sec-extract:exhibit;">Changes in and Disagreements with Accountants on Accounting and Financial Disclosure</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item9">46</a></td>
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      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item9b">46</a></td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item10" style="-sec-extract:exhibit;">Directors, Executive Officers and Corporate Governance</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item10">47</a></td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item11" style="-sec-extract:exhibit;">Executive Compensation</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item11">47</a></td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item12" style="-sec-extract:exhibit;">Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item12">47</a></td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item13" style="-sec-extract:exhibit;">Certain Relationships and Related Transactions, and Director Independence</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item13">47</a></td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item14" style="-sec-extract:exhibit;">Principal Accountant Fees and Services</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item14">47</a></td>
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      <td style="vertical-align: bottom; width: 80%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="#item15" style="-sec-extract:exhibit;">Exhibits and Financial Statement Schedules</a></p> </td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item15">48</a></td>
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      <td style="vertical-align: bottom; width: 80%;"><a href="#item16" style="-sec-extract:exhibit;">Form 10-K Summary</a></td>
      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#item16">49</a></td>
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      <td style="vertical-align: bottom; width: 10%; text-align: center;"><a class="tocPGNUM" href="#sigs">50</a></td>
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     <td style="vertical-align: bottom; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><span style="text-decoration: underline; "><b>Term</b></span></p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><span style="text-decoration: underline; "><b>Definition</b></span></p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">AIG</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Ammonia Injection Grid</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">APC</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Air Pollution Control Technology</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">ASCR<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup></p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">A trademark used to describe our Advanced Selective Catalytic Reduction process</p> </td>
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     <td style="vertical-align: top; width: 25%;">BACT</td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;">Best Available Control Technology</td>
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     <td style="vertical-align: top; width: 25%;">BREF</td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;">Best Available Reference Technology. European emission requirements</td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">CFD</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Computational Fluid Dynamics</p> </td>
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     <td style="vertical-align: top; width: 25%;">CKM</td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;">Chemical Kinetics Modeling</td>
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     <td style="vertical-align: top; width: 25%;">DGI&#x2122;</td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;">Dissolved Gas Infusion</td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">EPA</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">The United States&#xa0;Environmental Protection Agency</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">ESP</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Electrostatic Precipitator</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">FGC</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Flue Gas Conditioning</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">FUEL CHEM<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup></p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">A trademark used to describe our fuel and flue gas treatment processes, including its TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> Targeted In-Furnace Injection&#x2122; technology to control slagging, fouling, corrosion and a variety of sulfur trioxide-related issues</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">GSG&#x2122;</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Graduated Straightening Grid</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">HERT&#x2122;&#xa0;High&#xa0;Energy&#xa0;Reagent&#xa0;Technology&#x2122;</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">A trademark used to describe one of our SNCR processes for the reduction of NOx</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">I-NOx<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup></p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Systems can include LNB, OFA, and SNCR components, along with SCR technology, AIG, and GSG&#x2122;&#xa0;system</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">NOx</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Oxides of nitrogen</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">NOxOUT<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup></p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">A trademark used to describe one of our SNCR processes for the reduction of NOx</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">SCR</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Selective Catalytic Reduction</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">SNCR</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Selective Non-Catalytic Reduction</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> Targeted In-Furnace Injection&#x2122;</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">A trademark used to describe our proprietary technology that enables the precise injection of a chemical reagent into a boiler or furnace as part of a FUEL CHEM program</p> </td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">UDI&#x2122;</p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Urea Direct Injection as the process to provide urea reagent directly into a duct for SCR applications</p> </td>
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     <td style="vertical-align: top; width: 1298px;">Ultra-Low NOx Burner</td>
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     <td style="vertical-align: top; width: 25%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">ULTRA<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup></p> </td>
     <td style="vertical-align: bottom; width: 17px;">&#xa0;</td>
     <td style="vertical-align: top; width: 1298px;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">A trademark used to describe our process for generating ammonia for use as a Selective Catalytic Reduction reagent</p> </td>
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  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b><a id="part1" title="part1" href="#"></a>PART I</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Forward-Looking Statements</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">This Annual Report on Form&#xa0;10-K contains &#x201c;forward-looking statements,&#x201d; as defined in Section&#xa0;21E of the Securities Exchange Act of 1934, as amended, that are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and reflect our current expectations regarding our future growth, results of operations, cash flows, performance and business prospects, and opportunities, as well as assumptions made by, and information currently available to, our management. We have tried to identify forward-looking statements by using words such as &#x201c;anticipate,&#x201d; &#x201c;believe,&#x201d; &#x201c;plan,&#x201d; &#x201c;expect,&#x201d; &#x201c;intend,&#x201d; &#x201c;will,&#x201d; and similar expressions, but these words are not the exclusive means of identifying forward-looking statements.&#xa0;</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">For us, particular uncertainties that could cause our actual results to be materially different than those expressed in our forward-looking statements include:</p>
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     <td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">global economic and geopolitical conditions&#xa0;and related impacts, including spending and demand for our products and global supply chain disruptions and price inflation, will continue to adversely impact our business operations, financial performance, results of operations, financial position, the prices of our securities and the achievement of our strategic objectives;</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">changes in macroeconomic and market conditions and market volatility, including inflation, interest rates, and the impact of such changes and volatility on our customer&#x2019;s financial position and businesses;</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">the amount and timing of our cash flows and earnings, which may be impacted by customer, supplier, competitive, contractual and other dynamics and conditions;</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">market developments or customer actions that may affect demand and the financial performance of major industries and customers we serve, such as secular, cyclical and competitive pressures in the electric power industry; pricing, the timing of customer investment and other factors in energy markets; and other shifts in the competitive landscape for our products and services;</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">operational execution by our businesses, including our success in improving operational performance;</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">our decisions about investments in research and development, and new products, services and platforms, and our ability to launch new products in a cost-effective manner;</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">our ability to increase margins through implementation of operational changes, restructuring and other cost reduction measures;</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">the impact of actual or potential failures of our products or third-party products with which our products are integrated, and related reputational effects;</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">the impact of potential information technology, cybersecurity or data security breaches at our company or third parties; and</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">the other factors that are described in "Risk Factors" in this form 10-K report.</p> </td>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">These or other uncertainties may cause our actual future results to be materially different than those expressed in our forward-looking statements. We do not undertake to update our forward-looking statements. This document includes certain forward-looking projected financial information that is based on current estimates and forecasts. Actual results could differ materially.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b><a id="item1" title="item1" href="#"></a>ITEM&#xa0;1 - BUSINESS</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">As used in this Annual Report on Form&#xa0;10-K, the terms &#x201c;we,&#x201d; &#x201c;us,&#x201d; or &#x201c;our,&#x201d; refer to Fuel Tech, Inc. and our wholly owned subsidiaries.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>GENERAL</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">We are a leading technology company engaged in the worldwide development, commercialization and application of state-of-the-art proprietary technologies for air pollution control, process optimization, water treatment and advanced engineering services. These technologies enable our customers to operate efficiently in a cost-effective and environmentally sustainable manner.</p>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">The Company&#x2019;s nitrogen oxide (NOx) reduction technologies include advanced combustion modification techniques and post-combustion NOx control approaches, including NOxOUT<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup>, HERT&#x2122; High&#xa0;Energy&#xa0;Reagent&#xa0;Technology&#x2122;, and Advanced Selective Non-Catalytic Reduction (SNCR) systems, ASCR<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> Advanced Selective Catalytic Reduction systems, and I-NOx<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae; </sup>Integrated NOx Reduction Systems, which utilize various combinations of these systems, along with the UDI&#x2122; Urea Direct Injection system for Selective Catalytic Reduction (SCR) reagent supply, and the ULTRA<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae; </sup>process for safe ammonia generation.&#xa0; These technologies have established Fuel Tech as a leader in NOx reduction, with installations on over 1,200 units worldwide.</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">Fuel Tech&#x2019;s Air Pollution Control (APC) technologies include particulate control with Electrostatic Precipitator (ESP) products and services including complete turnkey capability for ESP retrofits, with experience on units up to 700 MW.&#xa0; Flue gas conditioning (FGC) systems include treatment using sulfur trioxide (SO3) and ammonia-based conditioning to improve the performance of ESPs by modifying the properties of fly ash particles. Fuel Tech&#x2019;s particulate control technologies have been installed on more than 125 units worldwide.</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">Our FUEL CHEM technologies revolve around the unique application of chemical injection programs which improve the efficiency, reliability, fuel flexibility, boiler heat rate and environmental status of combustion units by controlling slagging, fouling, corrosion, opacity and acid plume, as well as the formation of sulfur trioxide, ammonium bisulfate, particulate matter, sulfur dioxide, and carbon dioxide. We use our proprietary TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> Targeted In-Furnace Injection&#x2122; processes to apply specialty chemical programs to units burning a wide variety of fuels including coal, heavy oil, biomass, and municipal waste. These TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> programs incorporate design, modeling, equipment, reagent, and service to provide complete customized on-site programs designed to improve plant operations and provide a return on investment in addition to helping meet emission regulatory requirements.</p> </td>
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     <td style="vertical-align: top; text-align: justify;">Water treatment technologies include DGI&#x2122; Dissolved Gas Infusion Systems which utilize a patent-pending channel injector and a patent-pending saturator to provide a competitive advantage over conventional water and wastewater treatment aeration.&#xa0; An innovative alternative to current aeration technology among other applications, DGI&#x2122; systems can deliver supersaturated oxygen solutions and other gas-water combinations to target process applications or environmental issues.&#xa0; This infusion process has a variety of applications in the water and wastewater segments, including irrigation, treatment of natural waters, supply of oxygen for biological remediation and wastewater odor management.&#xa0; DGI&#x2122; technology benefits include improved treatment performance and reduced treatment time, and the potential for reduced energy consumption, along with lower installation and operating costs.&#xa0; The DGI&#x2122; technology is currently in the demonstration phase with limited revenues. Third party validation testing of the efficiency of transferring oxygen to a treatment basin has been completed and results have been published.</td>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Many of our products and services rely heavily on our Computational Fluid Dynamics (CFD) and Chemical Kinetics Modeling (CKM) capabilities, which are enhanced by internally developed, high-end visualization software.&#xa0; These capabilities, coupled with our innovative technologies and multi-disciplined team approach, enable us to provide practical solutions to some of our customers' most challenging issues.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>AIR POLLUTION CONTROL (APC)</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 7.2pt;text-align:justify;"><i>Regulations and Markets: Domestic</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 7.2pt;text-align:justify;">The future&#xa0;growth of our APC technology segment is dependent upon the adoption and enforcement of environmental regulations in the United States (U.S.) and globally. In the U.S., federal and state laws regulating the emission of NOx are the primary driver in our APC technology segment. The principal regulatory drivers currently in effect are as follows:</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:43.2pt;margin-right:7.2pt;margin-top:0pt;text-align:justify;"><i>Clean Air Act (CAA): </i>The CAA&#xa0;requires the U.S. Environmental Protection Agency (EPA) to establish national ambient air quality standards (NAAQS) at levels that are protective of public health with an adequate margin of safety. The six pollutants specified include: Ozone, Particulate Matter, Nitrogen Dioxide, Sulfur Dioxide, Lead, and Carbon Monoxide.&#xa0;The NAAQS provisions require that states comply with ozone and particulate emissions standards.&#xa0;NOx emissions are a precursor to ozone formation and also contribute to fine particulate emissions.&#xa0;Since 1990, EPA rules and programs have been established at the regional and federal level to help states in their mission to define and meet their State Implementation Plans&#xa0;for attainment.&#xa0;The NAAQS ground-level ozone standards that were issued in 1997, were made more stringent in 2008 and again in 2015. The EPA has kept the 2020 NAAQS ozone standard at 70 parts per billion, the same limit as 2015.&#xa0;EPA is evaluating the impact of NOx emissions from upwind sources on downwind states through the Good Neighbor provision of the CAA.&#xa0; The Good Neighbor provision may require upwind sources to provide additional NOx controls to help downwind states meet the 2020 ozone NAAQS requirements over the next several years.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:43.2pt;margin-right:7.2pt;margin-top:0pt;text-align:justify;"><i>Clean Air Visibility Rule (CAVR): </i>The CAVR, also known as the Regional Haze rule, is part of the Clean Air Act and was finalized in 2005. Under CAVR, certain States are required to submit implementation plans to the EPA to comply with the Regional Haze requirements, and updates are required every five years. A new CAVR was issued in January 2017 which requires states to implement new air pollution controls implementation plans in 2021 and 2022. NOx emissions contribute to ground level ozone which can contribute to localized haze, and many State Implementation Plans are addressing NOx reduction as part of CAVR compliance. The overall obligation of CAVR is to return the U.S. scenic areas to &#x201c;active&#x201d; visibility by 2064.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:43.2pt;margin-right:7.2pt;margin-top:0pt;text-align:justify;"><i>New Unit Permits:&#xa0; </i>New gas fired units for both electricity generation and industrial use will require Best Available Control Technology (BACT) as a permit requirement.&#xa0;SCR technology is very often BACT for NOx, and these permit requirements generate new market opportunities.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin-bottom:0pt;margin-left:43.2pt;margin-right:7.2pt;margin-top:0pt;text-align:justify;"><i>Consent Decrees: </i>Consent decree activity through the U.S. Department of Justice or EPA may require emission sources to meet individual requirements. Sources may also agree to specific air pollution requirements with states or environmental groups.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 7.2pt;text-align:justify;"><i>Regulations and Markets: International</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 7.2pt;text-align:justify;">We also sell air pollution control systems outside the U.S., specifically in Europe, Latin America, India (under a license agreement) and in the Pacific Rim.&#xa0;The demand for our technologies comes from specific governmental regulations in NOx and particulate matter emission limits which vary by country. We expect that there will be further opportunities to implement our technologies globally in established as well as new geographies in 2023.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt; text-align: justify; text-indent: 0pt;">The European Union published the Best Available Reference Technology (BREF) emission guidelines in mid 2017 which continue to be implemented gradually starting from large utility boilers and down to industrial units. The 2017 BREF guidelines reduced NOx limit values by up to 25% which required an upgrade of the first-generation NOx abatement systems, and that has presented new opportunities for Fuel Tech, especially on biomass and waste incineration plants. The projects were slow to implement due to the coronavirus (COVID-19) pandemic related restrictions and lock downs, however, the pace of implementation picked up in 2022 and that is expected to continue in 2023. New system opportunities are also being identified and followed in chemical production and petrochemical industries.&#xa0;European engineering companies are supplying power generation and flue gas treatment systems to industrial and utility customers globally. Fuel Tech&#x2019;s NOx control technologies can be integrated into these systems.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 7.2pt;text-align:justify;">In South Africa, the state-owned utility Eskom is slowly refurbishing aging ESPs and adding FGC technology to further improve ESP performance. Fuel Tech is well placed to compete for this business with our local partner Lesedi.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 7.2pt;text-align:justify;">The Indian government adopted a less stringent NOx emission standard for legacy power plants than what was initially agreed to in 2015 as part of the Paris Agreement. As a result, SNCR systems will be limited to waste-to-energy and&#xa0;industrial units for the foreseeable future. The government has prioritized sulfur oxide abatement over NOx abatement for the near term. Particulate matter&#xa0;emission reductions continue to be an area of focus in the country and that presents an ongoing opportunity for Fuel Tech&#x2019;s FGC technology application which utilizes sulfur trioxide and ammonia injection.&#xa0;These technologies will be implemented through a collaboration with our local partner ISGEC.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 7.2pt;text-align:justify;">Elsewhere in Southeast Asia, particulate emissions due to poor performing ESPs are being mitigated.&#xa0;Power generators in several countries like Vietnam, Malaysia and the Philippines are actively looking for corrective options. In Taiwan, there is a push to convert coal fired units to burn biomass. This presents Fuel Tech with opportunities to bring our ASNCR, SCR, Ultra and FGC technologies to these markets.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 7.2pt;text-align:justify;">Our NOx reduction and particulate control technologies are installed worldwide on over 1,200 combustion units, including utility, industrial and municipal solid waste applications.&#xa0; Our products include customized NOx control systems and our patented ULTRA<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;&#xa0;</sup>technology, which converts urea-to-ammonia on site and provides safe reagent for use in SCR&#xa0;systems.</p>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">SCR Systems and Services: Our SCR systems control NOx emissions from industrial and utility sources including boilers, incinerators, kilns, reformers and many other types of heat recovery equipment firing coal, natural gas, oil, and a variety of process gases and waste fuels. The SCR systems typically include urea or ammonia storage and delivery subsystems, reagent injection systems in the form of an Ammonia Injection Grid (AIG), catalyst reactor vessel and SCR catalyst.&#xa0; In addition, other related services, including start-ups, maintenance support and general consulting services for SCR systems, AIG design and tuning to help optimize catalyst performance, and catalyst management services to help optimize catalyst life, are now offered to customers around the world.&#xa0;We also specialize in CFD models, which simulate fluid flow by generating a virtual replication of real-world geometry and operating inputs.&#xa0;We design flow corrective devices, such as turning vanes, ash screens, static mixers and our patented GSG&#x2122; Graduated Straightening Grid.&#xa0;Our SCR systems utilize urea or ammonia as the SCR catalyst reagent to achieve NOx reductions of up to 85% from industrial combustion sources.</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">ULTRA<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> Technology: Our<sup style="vertical-align:top;line-height:120%;font-size:pt"> </sup>ULTRA<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> process is designed to convert urea to ammonia safely and economically for use as a reagent in the SCR process for NOx reduction.&#xa0; Recent local objections in the ammonia permitting process have raised concerns regarding the safety of ammonia shipment and storage in quantities sufficient to supply SCR.&#xa0; In addition, the Department of Homeland Security has characterized anhydrous ammonia as a Toxic Inhalation Hazard commodity.&#xa0;&#xa0; The safe conversion of urea to ammonia just prior to injection into the flue gas duct is particularly important near densely populated cities, major waterways, harbors or islands, or where the storage or transport of anhydrous or aqueous ammonia is a safety concern.&#xa0; UDI&#x2122; Urea Direct Injection systems utilize direct injection of urea reagent without the need for an ammonia injection grid.</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">SNCR Systems:&#xa0; Our NOxOUT<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> and HERT&#x2122; SNCR processes use urea or ammonia reagent injected into a variety of combustion furnaces to reduce NOx by up to 25% - 50% for utilities and by potentially significantly greater amounts for industrial units.&#xa0; Capital costs ranging from $5 - $20/kW for utility boilers and with total annualized operating costs range&#xa0;from $1,000 - $2,000/ton of NOx removed. Advanced SNCR systems are also available to improve performance and minimize reagent costs through in-furnace monitoring and an advanced control system.</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">I-NOx<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae; </sup>Systems: Our I-NOx<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae; </sup>systems can include burner modifications&#xa0;and SNCR components combined with SCR technology.&#xa0;Together, these systems provide up to 90% NOx reduction at significantly lower capital and operating costs than conventional SCR systems while providing greater operational flexibility to plant operators.&#xa0; The capital costs for I-NOx<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae; </sup>systems can range from $30 - $150/kW depending on boiler size and configuration, which is significantly less than that of conventional SCRs, which can cost $300/kW or more, while operating costs are competitive with those experienced by conventional SCR systems.</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">ESP Processes and Services: ESP technologies for particulate control include ESP&#xa0;products and services including ESP Inspection Services, Performance Modeling, and Performance and Efficiency Upgrades, along with complete turnkey capability for ESP retrofits.&#xa0;FGC&#xa0;systems include treatment using sulfur trioxide (SO3) and ammonia-based systems to improve the performance of ESPs by modifying the properties of&#xa0;fly ash particles.&#xa0; Our ULTRA<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> technology can provide the ammonia system feed requirements for FGC applications as a safe alternative to ammonia reagent-based systems.&#xa0;FGC systems offer a lower capital cost approach to improving ash particulate capture versus the alternative of installing larger ESPs or utilizing fabric filter technology to meet targeted emissions and opacity limits.&#xa0; Fuel Tech&#x2019;s particulate control technologies have been installed on more than 125 units worldwide.</p> </td>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">A market factor for the APC product line is the continued use of coal and the growth of biomass for global electricity production.&#xa0; The growth of natural gas in the U.S. for industrial applications has increased the need for SCR technology since it often meets the definition of BACT&#xa0;and is required on new industrial units.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Sales of APC products were $10.6&#xa0;million and&#xa0;$6.9&#xa0;million&#xa0;for the years ended December 31, 2022&#xa0;and&#xa0;2021, respectively.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><i>APC Competition</i></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Competition with our NOx reduction suite of products may be expected from companies supplying SCR Systems, SNCR systems, ESP retrofits and FGC technologies. In addition, we experience competition in the urea-to-ammonia conversion market.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The SCR process is an effective and proven method of control for removal of NOx up to 90%. SCR systems have a high capital cost of $300+/kW on retrofit coal applications. Companies including GE, Babcock Power, Babcock&#xa0;&amp; Wilcox (B&amp;W) Company, CECO Environmental and Mitsubishi are active SCR system and reagent feed system providers.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The use of both urea and ammonia as the reagent for the SNCR process can reduce NOx by 30% - 70%, depending on a number of factors. Ammonia can be effective on incinerators and on Circulating Fluidized Bed combustion units, but has limited applicability for most utility boilers, where urea is dominant. The ammonia-based systems utilize either anhydrous or aqueous ammonia, both of which are hazardous substances. Competitors for ammonia based SNCR include CECO Environmental, B&amp;W, and Yara, with CECO Environmental and B&amp;W for urea based SNCR systems.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">ESP retrofit competitors include B&amp;W and&#xa0;Southern Environmental.&#xa0;FGC competition includes Wahlco, Inc. and Chemithon, Inc.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Lastly, with respect to urea-to-ammonia conversion technologies, our controlled urea decomposition system competes with Hamon and Wahlco, which manufacture a system that hydrolyzes urea under high temperature and pressure.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>APC Backlog</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Consolidated APC segment backlog at December 31, 2022 was $8.2&#xa0;million versus backlog at December 31, 2021 of $9.1&#xa0;million. The Company expects to recognize revenue on approximately $7.9&#xa0;million of the backlog over the next 12 months with the remaining recognized thereafter.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The FUEL CHEM<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> technology segment revolves around the unique application of specialty chemicals to improve the efficiency, reliability and environmental status of plants operating in the electric utility, industrial, pulp and paper, waste-to-energy, university and district heating markets.&#xa0; FUEL CHEM programs are currently in place on combustion units in North America, Mexico and Europe, treating a wide variety of solid and liquid fuels, including coal, heavy oil, black liquor, biomass and municipal waste.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Central to the FUEL CHEM approach is the introduction of chemical reagents, such as magnesium hydroxide, to combustion units via in-body fuel application (pre-combustion) or via direct injection (post-combustion) utilizing our proprietary TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> technology.&#xa0; By attacking performance-hindering problems, such as slagging, fouling and corrosion, as well as the formation of sulfur trioxide (SO3), and ammonium bisulfate, our programs offer numerous operational, financial and environmental benefits to owners of boilers, furnaces and other combustion units.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">A key market factor for this product line is the continued use of coal for global electricity productio<span style="background-color:#ffffff;">n. In 2022, coal accounted for approximately 20% of all U.S. electricity generation and roughly</span> 39% of <span style="background-color:#ffffff;">global electricity generation.&#xa0;The global value&#xa0;is up from 37% in 2021, however 2022 was unique relative to higher natural gas pricing and future increases in coal usage are not expected to be the long-term trend. Maj</span>or coal consumers include the U.S., China and India.&#xa0;Additional market dynamics include a growing, worldwide utilization of biomass for both steam and electrical production, and the continued use of heavy fuel oil for power generation.&#xa0;The principal markets for this product line are electric power plants burning coals with slag-forming constituents such as sodium, iron and high levels of sulfur. Sodium is typically found in the Powder River Basin coals of Wyoming and Montana. Iron is typically found in coals produced in the Illinois Basin region. High sulfur content is typical of Illinois Basin coals and certain Appalachian coals. High sulfur content can give rise to unacceptable levels of SO3 formation especially in plants with SCR systems and flue gas desulphurization units (scrubbers).&#xa0; As coal units strive to compete in electricity supply markets, lower cost, higher slagging fuels can create more operational challenges which TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> Programs can help mitigate.&#xa0;The current Mexican government is utilizing more indigenous fuel sources for power generation because the international market for high sulfur fuel oil (what Mexico produces) has been significantly reduced with the adoption of the new International Maritime Organization&#xa0;restrictions. Fuel Tech&#x2019;s TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> systems can help with SO3 mitigation at these oil-fired power generation units.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The combination of slagging coals and SO3-related issues, such as &#x201c;blue plume&#x201d; formation, air pre-heater fouling and corrosion, SCR fouling and the proclivity to suppress certain mercury removal processes, represents an attractive market potential for Fuel Tech.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Sales of the FUEL CHEM products were $16.3&#xa0;million and&#xa0;$17.4&#xa0;million,&#xa0;for the years ended December 31, 2022&#xa0;and&#xa0;2021, respectively.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><i>Competition</i></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Competition for our FUEL CHEM product line includes chemicals sold by specialty chemical companies, such as Imerys, Environmental Energy Services, Inc., and SUEZ Water Technologies. No technologically comparable substantive competition currently exists for our TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> technology, which is designed primarily for slag control and SO3 abatement, but there can be no assurance that such lack of substantive competition will continue.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>INTELLECTUAL PROPERTY</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The majority of our products are protected by U.S. and non-U.S. patents.<span style="background-color:#ffffff;"> We own 63&#xa0;granted patents worldwide including 25 US patents and 38 non-US patents. We have 7 patent applications pending: including 3 in the U.S. and 4 in non-U.S. jurisdictions. These patents and applications cover some 31 inventions, 14 associated with our NOx reduction business, 12 associated with the FUEL CHEM business, and five associated with water treatment. Our granted patents have expiration dates ranging from March of 2024 to October of 2040.</span></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Management believes that the protection provided by the numerous claims in the above referenced patents or patent applications is substantial and affords us a significant competitive advantage in our business. Accordingly, any significant reduction in the protection afforded by these patents or any significant development in competing technologies could have a material adverse effect on our business.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">At December 31, 2022, we ha<span style="background-color:#ffffff;">d </span>66<span style="background-color:#ffffff;">&#xa0;employees, </span>61<span style="background-color:#ffffff;">&#xa0;in North America&#xa0;and five in Europe.</span> We enjoy good relations with our employees and are not a party to any labor management agreement.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We manage our Company according to a set of core principles.&#xa0;Included among these are respect for the individual, aspiring to excellence, safety and security, and appropriate reward for outstanding effort.&#xa0;We have put in place an employee compensation plan that recognizes hard work with above average salaries and equity incentive awards.&#xa0; We have returned to face-to-face work in our day-to-day activities, but we have implemented training and provided guidance for our teams to operate safely even in a face-to-face environment.&#xa0;As a technology company, we prize and reward educational achievement.&#xa0;Among our employees are found a large cohort of doctorates as well as other advanced degrees and professional certifications.&#xa0;We expect that these approaches to managing and empowering our human capital will continue to guide our progress in the future.&#xa0;</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>AVAILABLE INFORMATION</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We are a fully integrated company using a suite of advanced technologies to provide boiler optimization, efficiency improvement and air pollution reduction and control solutions to utility and industrial customers worldwide. Originally incorporated in 1987 under the laws of the Netherlands Antilles as Fuel-Tech N.V., we were domesticated in the United States on September 30, 2006, and continue as a Delaware corporation with our corporate headquarters at 27601 Bella Vista Parkway, Warrenville, Illinois, 60555-1617. Fuel Tech maintains an Internet website at <span style="text-decoration: underline; ">www.ftek.com</span>. Our Annual Report on Form&#xa0;10-K, quarterly reports on Form&#xa0;10-Q, current reports on Form 8-K and any amendments to those reports filed or furnished pursuant to Section&#xa0;13(a) of the Exchange Act are made available through our website as soon as reasonably practical after we electronically file or furnish the reports to the Securities and Exchange Commission. Our website also contains our Corporate Governance Guidelines and Code of Ethics and Business Conduct, as well as the charters of the Audit, Compensation, and Nominating and Corporate Governance committees of the Board of Directors. All of these documents are available in print without charge to stockholders who request them. Information on our website is not incorporated into this report.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item1a" title="item1a" href="#"></a>ITEM&#xa0;1A - RISK FACTORS</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The following is a discussion of the material risk factors; however, they may not be the only risks that we may face. The risks described below should not be considered a complete list of potential risks that we face, and additional risks and uncertainties not currently known to us or that we currently consider immaterial may also negatively impact our business. If any of these risks develop into actual or expected events, our business, financial condition, results of operations or cash flows could be materially and adversely affected, and, as a result, the trading price of our common stock could decline. You should carefully consider the risk factors described below, together with the other information included in this Annual Report on Form 10-K, before you decide to invest in our securities. Please read the cautionary notice regarding forward-looking statements under the heading &#x201c;Forward-Looking Statements.&#x201d;</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>RISKS RELATED TO OUR PRODUCTS AND PRICING</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Our Product Portfolio Lacks Diversification</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We have two broad technology segments that provide advanced engineering solutions to meet the pollution control, efficiency improvement, and operational optimization needs of coal and natural gas-fired energy-related facilities worldwide. They are as follows:</p>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Air Pollution Control technology segment includes technologies to reduce NOx emissions in flue gas generated by the firing of natural gas or coal from boilers, incinerators, furnaces and other stationary combustion sources. These include Over Fire Air (OFA) systems, NOxOUT<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> and HERT&#x2122; SNCR&#xa0;systems, and SCR&#xa0;systems. Our SCR systems can also&#xa0;include AIG, and GSG&#x2122;&#xa0;systems to provide high NOx reductions at significantly lower capital and operating costs than conventional SCR systems. ULTRA<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae; </sup>technology creates ammonia at a plant site using safe urea for use with any SCR application. ESP technologies make use of electrostatic precipitator products and services to reduce particulate matter. FGC systems are chemical injection systems offered in markets outside the U.S. and Canada to enhance electrostatic precipitator and fabric filter performance in controlling particulate emissions.</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The FUEL CHEM<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> technology segment which uses chemical processes in combination with advanced CFD&#xa0;and CKM&#xa0;boiler modeling for the control of slagging, fouling, corrosion, opacity and other sulfur trioxide-related issues in coal-fired furnaces and boilers through the addition of chemicals into the furnace using TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> Targeted In-Furnace Injection&#x2122; technology.</p> </td>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">An adverse development in our advanced engineering solutions business as a result of competition, technological change, government regulation, customers converting to use natural gas or other fuels, or any other factor could have a significantly greater impact than if we maintained more diverse operations.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>We Face Substantial Competition</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Competition in the Air Pollution Control market comes from competitors utilizing their own NOx reduction processes, including SCR systems, SNCR systems, Low NOx Burners, Over-Fire Air systems, ammonia and urea based delivery systems for SNCR and SCR, which do not infringe our patented or proprietary technologies.&#xa0; Indirect competition will also arise from business practices such as the purchase rather than the generation of electricity, fuel switching, closure or de-rating of units, and sale or trade of pollution credits and emission allowances.&#xa0; Utilization by customers of such processes or business practices or combinations thereof may adversely affect our pricing and participation in the NOx control market if customers elect to comply with regulations by methods other than the purchase of our Air Pollution Control products.&#xa0; See Item&#xa0;1 &#x201c;<i>Products</i>&#x201d; and &#x201c;<i>APC</i> <i>Competition</i>&#x201d; in the <i>Air Pollution Control</i> segment overview.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Competition for our FUEL CHEM markets include chemicals sold by specialty chemical companies, such as Imerys, Environmental Energy Services, Inc., and SUEZ Water Technologies.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Our Dependence Upon Fixed-price Contracts Could Adversely Affect our Operating Results.</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">The majority of our air pollution control projects are currently performed on a fixed-price basis. Under a fixed-price contract, we agree on the price that we will receive for the entire project, based upon a defined scope, which includes specific assumptions and project criteria. If our estimates of the costs to complete the project are below the actual costs that we incur, our margins will decrease, or we may incur a loss. The revenue, cost and gross profit realized on a fixed-price contract will often vary from the estimated amounts because of unforeseen conditions or changes in job conditions and variations in labor and equipment productivity over the term of the contract. While our fixed-price contracts are typically not individually material to our operating results, if we are unsuccessful in mitigating these risks, we may realize gross profits that are different from those originally estimated and incur reduced profitability or losses on projects. Depending on the size of a project, these variations from estimated contract performance could have a significant effect on our operating results. In general, turnkey contracts to be performed on a fixed-price basis involve an increased risk of significant variations. Generally, our contracts and projects vary in length, depending on the size and complexity of the project, project owner demands and other factors. The foregoing risks are exacerbated for projects with longer-term durations and the inherent difficulties in estimating costs and of the interrelationship of the integrated services to be provided under these contracts whereby unanticipated costs or delays in performing part of the contract can have compounding effects by increasing costs of performing other parts of the contract.</p>
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  <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"><b>Customers May Cancel or Delay Projects.</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">Customers may cancel or delay projects for reasons beyond our control. Our orders normally contain cancellation provisions that permit us to recover our costs, and, for most contracts, a portion of our anticipated profit in the event a customer cancels an order. If a customer elects to cancel an order, we may not realize the full amount of revenues included in our backlog. If projects are delayed, the timing of our revenues could be affected and projects may remain in our backlog for extended periods of time. Revenue recognition occurs over long periods of time and is subject to unanticipated delays. If we receive relatively large orders in any given quarter, fluctuations in the levels of our quarterly backlog can result because the backlog in that quarter may reach levels that may not be sustained in subsequent quarters.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Our Operating Results May Be Adversely Affected by Product Pricing</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The onset of significant competition for either of the technology segments might require us to lower our product prices in order to remain competitive and have a corresponding adverse impact on our realized gross margins and operating profitability. See the risk factor entitled &#x201c;We Face Substantial Competition&#x201d; above.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Our Customer Base Is Highly Concentrated</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">A small number of customers have historically accounted for a significant portion of our revenues. <span style="background-color:#ffffff;">During 2022, our five largest customers accounted for approximately 61% of our net revenues, with our largest customer accounting for approximately 22% of our net revenues. T</span>here can be no assurance that all significant customers will continue to purchase our products in the same quantities that they have in the past. The loss of any one of our significant customers or a material reduction in sales to a significant customer could have a material adverse effect on our sales and results of operations.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>RISKS RELATED TO OUR BUSINESS</b></p>
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  <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"><b>Our Financial Performance May Vary Significantly From Period to Period.</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">Our annual revenues and earnings have varied in the past and are likely to vary in the future. Our contracts generally stipulate customer specific delivery terms and may have contract cycles of a year or more, which subjects these contracts to many factors beyond our control. In addition, contracts that are significantly larger in size than our typical contracts tend to intensify their impact on our annual operating results. Furthermore, as a significant portion of our operating costs are fixed, an unanticipated decrease in our revenues, a delay or cancellation of orders in backlog, or a decrease in the demand for our products, may have a significant impact on our annual operating results. Therefore, our annual operating results may be subject to significant variations and our operating performance in one period may not be indicative of our future performance.</p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;"><b>Energy Transition </b></p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">The strategic priorities and financial performance of our businesses are subject to market and other dynamics related to decarbonization, which can pose risks in addition to opportunities for those businesses. Given the nature of our businesses and the industries we serve, we must anticipate and respond to market, technological, regulatory and other changes driven by broader trends related to decarbonization efforts in response to climate change. These changes present both risks and opportunities for our businesses, many of which provide products and services to customers in sectors like power generation that have historically been carbon intensive and will remain important to efforts globally to lower greenhouse gas emissions for decades to come. For example, the significant decreases in recent years in the levelized cost of energy for renewable sources of power generation (such as wind and solar), along with ongoing changes in government, investor, customer and consumer policies, commitments, preferences and considerations related to climate change, in some cases have adversely affected, and are expected to continue to affect, the demand for and the competitiveness of products and services related to carbonaceous fuel-based power generation, including sales of new air pollution control equipment and the utilization and servicing needs for existing power plants. Continued shifts toward greater penetration by renewables in both new capacity additions and the proportionate share of power generation, particularly depending on the pace and timeframe for such shifts across different markets globally, could have a material adverse effect on our business and our consolidated results.</p>
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  <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"><b>Our Manufacturing Operations Are Dependent on Third-party Suppliers.</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">Although we are not dependent on any one supplier, we are dependent on the ability of our third-party suppliers to supply our raw materials, as well as certain specific component parts. The third-party suppliers upon which we depend may default on their obligations to us due to bankruptcy, insolvency, lack of liquidity, adverse economic conditions, operational failure, fraud, loss of key personnel, or other reasons. We cannot assure that our third-party suppliers will dedicate sufficient resources to meet our scheduled delivery requirements or that our suppliers will have sufficient resources to satisfy our requirements during any period of sustained demand. Failure of suppliers to supply, or delays in supplying, our raw materials or certain components, or allocations in the supply of certain high demand raw components, for any reason, including, without limitation, disruptions in our suppliers&#x2019; business activities due to cybersecurity incidents, terrorist activity, public health crises (such as coronavirus), fires or other natural disasters could materially adversely affect our operations and ability to meet our own delivery schedules on a timely and competitive basis.&#xa0;&#xa0;Additionally, our third-party suppliers may provide us with raw materials or component parts that fail to meet our expectations or the expectations of our customers, which could subject us to product liability claims, other claims and litigation.</p>
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  <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"><b>Our Use of Subcontractors Could Potentially Harm our Profitability and Business Reputation.</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">Occasionally we act as a prime contractor in some of the engineered projects we undertake. In our capacity as lead provider and when acting as a prime contractor, we perform a portion of the work on our projects with our own resources and typically subcontract activities such as manufacturing and installation work. In our industry, the lead contractor is normally responsible for the performance of the entire contract, including subcontract work. Thus, when acting as a prime contractor, we are subject to risk associated with the failure of one or more subcontractors to perform as anticipated.</p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">We employ subcontractors at various locations around the world to meet our customers&#x2019; needs in a timely manner, meet local content requirements and reduce costs. Subcontractors perform all of our manufacturing for customers. The use of subcontractors decreases our control over the performance of these functions and could result in project delays, escalated costs and substandard quality. These risks could adversely affect our profitability and business reputation. In addition, many of our competitors, who have greater financial resources and greater bargaining power than we have, use the same subcontractors that we use and could potentially influence our ability to hire these subcontractors. If we were to lose relationships with key subcontractors, our business could be adversely impacted.</p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;"><b>Operational Execution </b></p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">Operational challenges could have a material adverse effect on our business, reputation, financial position, results of operations and cash flows. The Company&#x2019;s financial results depend on the successful execution of our businesses&#x2019; operating plans across all steps of the engineering and design, manufacture, installation and service lifecycle. We continue working to improve the operations and execution of our businesses and our ability to make the desired improvements will be a significant factor in our overall financial performance. Operational failures in any of our business segments that result in quality problems or potential product, environmental, health or safety risks, could have a material adverse effect on our business, reputation, financial position and results of operations. In addition, for some large-scale projects we may be required by our customer to take on the full scope of engineering, procurement, construction or other services. These types of projects often pose unique risks related to their location, scale, complexity, duration and pricing or payment structure. Performance issues or schedule delays can arise due to inadequate technical expertise, unanticipated project modifications, developments at project sites, environmental, health and safety issues, execution by or coordination with suppliers, subcontractors or consortium partners, financial difficulties of our customers or significant partners or compliance with government regulations, and these can lead to cost overruns, contractual penalties, liquidated damages and other adverse consequences. Operational, quality or other issues at large projects, or across our projects portfolio more broadly, can adversely affect our business, reputation or results of operations.</p>
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  <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"><b>We Rely on Several Key Employees Whose Absence or Loss Could Disrupt our Operations or Be Adverse to our Business.</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">We are highly dependent on the experience of our management in the continuing development of our operations. The loss of the services of certain of these individuals would have a material adverse effect on our business. Although we have employment and non-competition agreements with certain of our key employees, as a practical matter, those agreements will not assure the retention of our employees, and we may not be able to enforce all of the provisions in any employment or non-competition agreement. Our future success will depend in part on our ability to attract and retain qualified personnel to manage our development and future growth. We cannot guarantee that we will be successful in attracting and retaining such personnel. Our failure to recruit additional key personnel could have a material adverse effect on our financial condition, results of operations and cash flows.</p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;"><b>Cybersecurity</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">Increased cybersecurity requirements, vulnerabilities, threats and more sophisticated and targeted computer crime pose a risk to our systems, networks, products, solutions, services and data. Increased global cybersecurity vulnerabilities, threats, computer viruses and more sophisticated and targeted cyber-related attacks such as ransomware, as well as cybersecurity failures resulting from human error and technological errors, pose a risk to the security of Fuel Tech and its customers', partners', suppliers' and third-party service providers' infrastructure, products, systems and networks and the confidentiality, availability and integrity of Fuel Tech&#x2019;s and its customers' data. As the perpetrators of such attacks become more capable, and as critical infrastructure is increasingly becoming digitized, the risks in this area continue to grow. There can be no assurance that our efforts to mitigate cybersecurity risks by employing a number of measures, including employee training, monitoring and testing, vulnerability testing and maintenance of protective systems and contingency plans, will be sufficient to prevent, detect and limit the impact of cyber-related attacks, and we remain vulnerable to known or unknown threats. A significant cyber-related attack could result in other negative consequences, including damage to our reputation or competitiveness, remediation, increased digital infrastructure or other costs that are not covered by insurance, litigation or regulatory action.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>We May Not Be Able to Successfully Protect our Patents and Proprietary Rights</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">We hold licenses to or own a number of patents for our products and processes.&#xa0; In addition, we also have numerous patent applications pending both in the U.S. and abroad.&#xa0; There can be no assurance that any of our pending patent applications will be granted or that our outstanding patents will not be challenged, overturned or otherwise circumvented by competitors.&#xa0; In foreign markets, the absence of harmonized patent laws makes it more difficult to ensure consistent respect for our patent rights in emerging markets.&#xa0; In addition, certain critical technical information relating to our products which is not patented is held as trade secret, and protected by trade secret laws and restrictions on disclosure contained in our confidentiality and licensing agreements.&#xa0; There can be no assurance that such protections will prove adequate or that we will have adequate remedies against contractual counterparties for disclosure of our trade secrets or other violations of our intellectual property rights.&#xa0; See Item&#xa0;1 above under the caption <i>&#x201c;Intellectual Property.&#x201d;</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Our Results May Be Affected By Foreign Operations</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We currently have foreign operations predominantly in Europe with our offices located in Gallarate, Italy. The future business opportunities in this market are dependent on the continued implementation and enforcement of regulatory policies that will benefit our technologies, the acceptance of our engineering solutions in such markets, the ability of potential customers to utilize our technologies on a competitive, cost-effective basis, and our ability to protect and enforce our intellectual property rights.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>We May Not Be Able to Purchase Raw Materials on Commercially Advantageous Terms</b></p>
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  <p style="text-align: justify; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt;">Our FUEL CHEM technology segment is dependent, in part, upon a supply of magnesium hydroxide. Any adverse changes in the availability of this chemical will likely have an adverse impact on ongoing operation of our FUEL CHEM programs. On March&#xa0;4, 2009, we entered into a Restated Product Supply Agreement (PSA) with Martin Marietta Magnesia Specialties, LLC (MMMS) in order to assure the continuance of a stable supply from MMMS of magnesium hydroxide products for our requirements in the U.S. and Canada. The term of the PSA expires on December 31, 2023.&#xa0;Pursuant to the PSA, MMMS supplies us with magnesium hydroxide products manufactured pursuant to our specifications and we have agreed to purchase from MMMS, and MMMS has agreed to supply, 100% of our requirements for such magnesium hydroxide products for our customers who purchase such products for delivery in the U.S. and Canada. There can be no assurance that we will be able to obtain a stable source of magnesium hydroxide in markets outside the U.S.</p>
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  <p style="text-align: justify; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt;"><b>RISKS RELATED TO OUR INDUSTRY</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Demand for Our APC and FUEL CHEM Products is Affected by External Market Factors</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Reduced coal and natural gas-fired electricity demand across the U.S. has led to production declines.&#xa0; Contributing factors to this decline in coal-fired generation&#xa0;were: 1)&#xa0;lower natural gas prices which allowed utility operators to increase the amount of power generated from natural gas plants, 2)&#xa0;increased cost of environmental compliance with current environmental regulations, 3)&#xa0;constrained funding for capital projects, and 4) the increased production of electricity from renewable sources, such as wind and solar.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Our Business Is Dependent on Continuing Air Pollution Control Regulations and Enforcement</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Our business is significantly impacted by and dependent upon the regulatory environment surrounding the electricity generation market.&#xa0; Our business will be adversely impacted to the extent that regulations are repealed or amended to significantly reduce the level of required NOx or particulate matter reduction, or to the extent that regulatory authorities delay or otherwise minimize enforcement of existing laws.&#xa0; Additionally, long-term changes in environmental regulation that threaten or preclude the use of coal or other fossil fuels as a primary fuel source for electricity production which result in the reduction or closure of a significant number of fossil fuel-fired power plants may adversely affect our business, financial condition and results of operations.&#xa0; See Item&#xa0;1 above under the caption &#x201c;<i>Regulations and Markets</i>&#x201d; in the <i>Air Pollution Control</i> segment overview.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>GENERAL RISK FACTORS</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><b>There Is Still Significant Uncertainty Related to the COVID-19 Pandemic; Future Pandemics Could Pose Similar Challenges</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The continued prevalence of the COVID-19&#xa0;pandemic around the world presents significant risks to the Company, not all of which the Company is able to fully evaluate&#xa0;or even foresee at the current time. The COVID-19 pandemic has affected the Company's operations in the years ended December 31, 2022 and 2021, although the impact of the pandemic is difficult to quantify, and may continue to do so indefinitely hereafter. The Company has experienced, and may continue to experience, delays in supply of critical equipment, reductions in demand for certain of our products as several accounts remained offline due to soft electricity demand and unplanned outage activities and due to the delay or abandonment of ongoing or anticipated projects due to the customers', suppliers' and other third parties' financial distress or concern regarding the volatility of global markets.&#xa0;</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Management cannot predict the full impact of the COVID-19 pandemic on the Company's sales and marketing channels and supply chain, and, as a result, the ultimate extent of the effects of the COVID-19 pandemic on the Company is highly uncertain and will depend on future developments.&#xa0; Such effects could exist for an extended period of time even after the pandemic ends and any future such pandemic could have similar or greater challenges.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><b>Geopolitical and Unexpected Events May Impact New or Existing Projects and Prices and Availability of Raw Materials, Energy and Other Materials.&#xa0;</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">These events may also impact energy and regulatory policy nationally or regionally for the impacted regions.&#xa0;Such disruptions could have a material adverse effect on our business and financial results.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item1b" title="item1b" href="#"></a>ITEM&#xa0;1B - UNRESOLVED STAFF COMMENTS</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">None</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item2" title="item2" href="#"></a>ITEM&#xa0;2 - PROPERTIES</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We own an office building in Warrenville, Illinois, which has served as our corporate headquarters since June&#xa0;23, 2008. This facility, with approximately 40,000 square feet of office space, is sufficient to meet our requirements for the foreseeable future.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We also operate from leased office facilities and we do not segregate any of these leased facilities by operating business segment. The terms of the Company's primary lease arrangements as of December 31, 2022&#xa0;are as follows:</p>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Gallarate, Italy building lease, for approximately 1,335&#xa0;square feet, runs through April&#xa0;30, 2025. This facility serves as the operating headquarters for our European operations.</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Aurora, IL warehouse lease, for approximately 11,000 square feet, runs through December 31, 2023. This facility serves as an outside warehouse facility.</p> </td>
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     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Overland Park, KS lease, for approximately 600 square feet, runs through&#xa0;October 15, 2024. This facility serves primarily as a sales office.</p> </td>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item3" title="item3" href="#"></a>ITEM&#xa0;3 - LEGAL PROCEEDINGS</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">From time to time we are involved in litigation with respect to matters arising from the ordinary conduct of our business.&#xa0;In the opinion of management, based upon presently available information, either adequate provision for anticipated costs have been accrued or the ultimate anticipated costs will not materially affect our consolidated financial position, results of operations, or cash flows.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">See Note 9 "Commitments and Contingencies" in the Notes to the Consolidated Financial Statements in this Annual Report on Form&#xa0;10-K.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item4" title="item4" href="#"></a>ITEM&#xa0;4 &#x2013; MINE SAFETY DISCLOSURES</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Not Applicable</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b><a id="part2" title="part2" href="#"></a>PART II</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item5" title="item5" href="#"></a>ITEM&#xa0;5 - MARKET FOR REGISTRANT&#x2019;S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASE OF EQUITY SECURITIES</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Market</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Our common stock has been traded since September 1993 on The NASDAQ Stock Market, Inc, where it trades under the symbol FTEK.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>&#xa0;</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Holders</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">As of February 28,&#xa0;2023, there were 62&#xa0;holders of record of our common stock, which does not include the number of beneficial owners whose common stock was held in street name or through fiduciaries.</p>
  <p style="font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt;"><b>Dividends</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We have never paid cash dividends on the common stock and have no current plan to do so in the foreseeable future. The declaration and payment of dividends on the common stock is subject to the discretion of our Board of Directors. The decision of the Board of Directors to pay future dividends will depend on general business conditions, the effect of a dividend payment on our financial condition, and other factors the Board of Directors may consider relevant. The current policy of the Board of Directors is to reinvest earnings in operations to promote future growth.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item6" title="item6" href="#"></a>ITEM&#xa0;6 - RESERVED</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item7" title="item7" href="#"></a>ITEM&#xa0;7 - MANAGEMENT&#x2019;S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS</b> <i>(amounts in thousands of dollars)</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Overview</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">In 2022, the Company continued to experience a challenging operational environment resulting from the ongoing substitution of gas-fired and renewable energy plants for coal-fired installations and the ongoing impacts of geopolitical events and the coronavirus (COVID-19) global pandemic.&#xa0;We continue to invest in the development of new technologies to expand our product offerings into the water and waste-water treatment market. The Board approved a plan to invest excess capital to provide returns on excess cash while preserving capital and managing liquidity. In June 2022, $10&#xa0;million was transferred to the investment account and an additional $10 million was transferred in December 2022. Our capital resources are sufficient for our immediate and longer-term needs and we continue to enjoy the services and support of a dedicated workforce.&#xa0;We expect that our cost control efforts will maintain our existing levels of operating expenditures and the diminishing effects of the pandemic should lead to an improved market outlook.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>COVID-19 Pandemic and Geopolitical Events</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The effects of COVID-19 have presented&#xa0;significant risks to the Company. The COVID-19 pandemic has affected the Company's operations during the twelve months ended December 31, 2022 and 2021.&#xa0;Although the impact of the pandemic is difficult to quantify, the Company has experienced, and may continue to experience, supply chain issues, travel restrictions, and reductions in demand for certain of our products&#xa0;due to the delay or abandonment of ongoing or anticipated projects due to our customers&#x2019;, suppliers&#x2019; and other third parties&#x2019; financial distress or concern regarding the volatility of global markets.&#xa0;Geopolitical events and global economic sanctions resulting from the ongoing conflict between Russia and Ukraine may impact new or existing projects and the prices and availability of raw materials, energy and other materials.&#xa0;These events may also impact energy and regulatory policy nationally or regionally for the impacted regions.&#xa0;In addition, we have experienced and are experiencing varying levels of inflation resulting in part from increased shipping and transportation costs, raw material costs, and labor costs.&#xa0;Management cannot predict the full impact of the COVID-19 pandemic and geopolitical events on the Company&#x2019;s sales and marketing channels and supply chain, and as a result, the ultimate extent of the effects on the Company are highly uncertain and will depend on future developments. Such effects could exist for an extended period of time. The Company continues to monitor the potential impacts on the business.&#xa0;</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><b>Key Operating Factors</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><span style="background-color:#ffffff;">Our FUEL CHEM&#xae; segment performed well in </span>2022<span style="background-color:#ffffff;">, but experienced a decline in&#xa0;revenues and segment operating profits compared to </span>2021<span style="background-color:#ffffff;">.&#xa0;FUEL CHEM faced some headwinds due to the loss of one customer from permanent plant retirement and the reduction in demand from other customers due to unfavorable climate conditions and to operating and maintenance scheduling.&#xa0;</span></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><span style="background-color:#ffffff;">Our APC&#xa0;business experienced improvement in </span>2022<span style="background-color:#ffffff;">, compared to </span>2021<span style="background-color:#ffffff;">, due to the execution of projects awarded in the second half of 2021 and in 2022. We are also encouraged by the pace and depth of our business development activities, which reflects an increased focus on global emissions protocols across a variety of fuel sources.&#xa0;Our Consolidated APC backlog at year end was </span>$8,245<span style="background-color:#ffffff;">&#xa0;and our global sales pipeline</span> has increased to $50 -75 million range.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><b>Background</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">We have two broad technology segments that provide advanced engineered solutions to meet the pollution control, efficiency improvement and operational optimization needs of energy-related facilities worldwide. They are as follows:</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><i>Air Pollution Control Technologies</i></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The Air Pollution Control technology segment includes technologies to reduce NOx emissions in flue gas generated by the firing of natural gas or coal from boilers, incinerators, furnaces and other stationary combustion sources. These include SCR systems,&#xa0;NOxOUT and HERT&#x2122; SNCR systems, and OFA systems.&#xa0;Our SCR systems can also include AIG, and GSG&#x2122; systems to provide high NOx reductions at significantly lower capital and operating costs than conventional SCR systems. ULTRA<sup style="vertical-align:top;line-height:120%;font-size:pt"><span style="background-color:#ffffff;">&#xae;</span></sup> technology creates ammonia at a plant site using safe urea for use with any SCR application.&#xa0;ESP technologies make use of electrostatic precipitator products and services to reduce particulate matter. FGC systems are chemical injection systems offered in markets outside the U.S. and Canada to enhance electrostatic precipitator and fabric filter performance in controlling particulate emissions. We distribute our products through our direct sales force and third-party sales agents.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><i>FUEL CHEM Technologies</i></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The FUEL CHEM technology segment, which uses chemical processes in combination with advanced CFD and CKM boiler modeling, for the control of slagging, fouling, corrosion, opacity and other sulfur trioxide-related issues in coal-fired furnaces and boilers through the addition of chemicals into the furnace using TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt"><span style="background-color:#ffffff">&#xae;</span> </sup>Targeted In-Furnace Injection&#x2122; technology. Fuel Tech sells its FUEL CHEM program through its direct sales force and agents to industrial and utility power-generation facilities. FUEL CHEM programs have been installed on combustion units in North America, Europe, China, and India, treating a wide variety of solid and liquid fuels, including coal, heavy oil, biomass and municipal waste. The FUEL CHEM program improves the efficiency, reliability and environmental status of plants operating in the electric utility, industrial, pulp and paper, waste-to-energy, university and district heating markets and offers numerous operational, financial and environmental benefits to owners of boilers, furnaces and other combustion units.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The key market dynamic for both technology segments is the continued use of fossil fuels, especially coal, as the principal fuel source for global electricity production. <span style="background-color:#ffffff">In 2022, coal accounted for approximately 20% of all U.S. electricity generation and roughly 39% of global electricity generation.&#xa0;The global value&#xa0;is up from 37% in 2021, however 2022 was unique relative to higher natural gas pricing and future increases in coal usage are not expected to be the long-term trend.&#xa0;</span>Major coal consumers include China, the U.S. and India.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Critical Accounting Policies and Estimates</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The consolidated financial statements are prepared in accordance with accounting principles generally accepted in the U.S. (GAAP), which require us to make estimates and assumptions. We believe that, our accounting policies (see Note 1 to the consolidated financial statements), involve a higher degree of judgment, estimates and assumptions&#xa0;and are deemed critical. We routinely discuss our critical accounting policies with the Audit Committee of the Board of Directors.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Revenue Recognition</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is not separately identifiable from other promises in the contracts and, therefore, not distinct. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales, value add, and other taxes we collect concurrent with revenue-producing activities are excluded from revenue.</p>
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  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>FUEL CHEM</i></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>&#xa0;&#xa0;</i></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Revenues from the sale of chemical products are recognized when control transfers to customer upon shipment or delivery of the product based on the applicable shipping terms. We generally recognize revenue for these arrangements at a point in time based on our evaluation of when the customer obtains control of the promised goods or services.&#xa0;</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On occasion, Fuel Tech will engineer and sell its chemical pumping equipment.&#xa0; These projects are similar in nature to the APC projects described below and for those projects where control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation.&#xa0;</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><i>&#xa0;</i></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">For projects containing multiple performance obligations, the Company allocates the transaction price based on the estimated standalone selling price. The Company must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. The Company utilizes key assumptions to determine the stand-alone selling price, which may include other comparable transactions, pricing considered in negotiating the transaction and the estimated costs. Variable consideration is allocated specifically to one or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated are consistent with the amounts the Company would expect to receive for the satisfaction of each performance obligation.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The consideration allocated to each performance obligation is recognized as revenue when control is transferred for the related goods or services. For performance obligations which consist of licenses and other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The Company receives payments from its customers based on billing schedules established in each contract. Up-front payments and fees are recorded as deferred revenue upon receipt or when due until the Company performs its obligations under these arrangements. Amounts are recorded as accounts receivable when the Company&#x2019;s right to consideration is unconditional.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Air Pollution Control Technology</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech&#x2019;s APC contracts are typically six to eighteen months in length. A typical contract will have three or four critical operational measurements that, when achieved, serve as the basis for us to invoice the customer via progress billings. At a minimum, these measurements will include the generation of engineering drawings, the shipment of equipment and the completion of a system performance test.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">As part of most of its contractual APC project agreements, Fuel Tech will agree to customer-specific acceptance criteria that relate to the operational performance of the system that is being sold. These criteria are determined based on modeling that is performed by Fuel Tech personnel, which is based on operational inputs that are provided by the customer. The customer will warrant that these operational inputs are accurate as they are specified in the binding contractual agreement. Further, the customer is solely responsible for the accuracy of the operating condition information; typically all performance guarantees and equipment warranties granted by us are voidable if the operating condition information is inaccurate or is not met.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Since control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation. Fuel Tech uses the cost-to-cost input measure of progress for our contracts since it best depicts the transfer of assets to the customer which occurs as we incur costs on our contracts. Under the cost-to-cost input measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred. Costs to fulfill include all internal and external engineering costs, equipment charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product-line related, as appropriate (e.g. test equipment depreciation and certain insurance expenses).&#xa0;Unexpected or unknown costs could affect the timing of revenue recognition and the cumulative profitability of the related projects.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Fuel&#xa0;Tech&#x2019;s&#xa0;APC&#xa0;product&#xa0;line&#xa0;also&#xa0;includes&#xa0;ancillary&#xa0;revenue&#xa0;for&#xa0;post&#xa0;contractual&#xa0;goods&#xa0;and&#xa0;services.&#xa0;Revenue&#xa0;associated&#xa0;with these&#xa0;activities&#xa0;are&#xa0;recognized&#xa0;at a point&#xa0;in&#xa0;time&#xa0;when delivery&#xa0;of&#xa0;goods&#xa0;or&#xa0;completion&#xa0;of&#xa0;the&#xa0;service&#xa0;obligation&#xa0;is&#xa0;performed.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech has installed over 1,200 units with APC technology and normally provides performance guarantees to our customers based on the operating conditions for the project. As part of the project implementation process, we perform system start-up and optimization services that effectively serve as a test of actual project performance. We believe that this test, combined with the accuracy of the modeling that is performed, enables revenue to be recognized prior to the receipt of formal customer acceptance.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">As of December 31, 2022&#xa0;and 2021, we had no&#xa0;construction contracts in progress that were identified as a loss contract.&#xa0;</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the consolidated balance sheets. In our Air Pollution Control technology segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. These assets are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. At </span>December 31, 2022<span style="background-color:#ffffff;">,&#xa0;</span>2021<span style="background-color:#ffffff;">, and </span>2020<span style="background-color:#ffffff;">&#xa0;contract assets for APC technology projects were&#xa0;approximately </span>$3,082<span style="background-color:#ffffff;">&#xa0;and </span>$1,277<span style="background-color:#ffffff;">, and $2,079, respectively, and at December 31, 2020, contract assets&#xa0;for the FUEL CHEM technology segment were approximately $269, and are included in accounts receivable on the consolidated balance sheets. There were no contract assets for the FUEL CHEM technology segment as of&#xa0;</span>December 31, 2022<span style="background-color:#ffffff;">&#xa0;and&#xa0;</span>2021</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">However, the Company will periodically bill in advance of costs incurred before revenue is recognized, resulting in contract liabilities. These liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. Contract liabilities were </span>$372<span style="background-color:#ffffff;">,&#xa0;</span>$390<span style="background-color:#ffffff;">, and $850 at </span>December 31, 2022<span style="background-color:#ffffff;">,&#xa0;</span>2021<span style="background-color:#ffffff;">, and </span>2020<span style="background-color:#ffffff;">, respectively, and are included in other accrued liabilities on the consolidated balance sheets.</span></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Allowance for Doubtful Accounts</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The allowance for doubtful accounts is management&#x2019;s best estimate of the amount of credit losses in accounts receivable. The allowance for doubtful accounts balance can be impacted by unforeseen collectability issues.&#xa0;In order to control and monitor the credit risk associated with our customer base, we review the credit worthiness of customers on a recurring basis. Factors influencing the level of scrutiny include the level of business the customer has with us, the customer&#x2019;s payment history and the customer&#x2019;s financial stability. Receivables are considered past due if payment is not received by the date agreed upon with the customer, which is normally 30 days after invoice. Representatives of our management team review all past due accounts on a bi-weekly basis to assess collectability. At the end of each reporting period, the allowance for doubtful accounts balance is reviewed relative to management&#x2019;s collectability assessment and is adjusted if deemed necessary through a corresponding charge or credit to bad debt&#xa0;expense, which is included in selling, general, and administrative expenses in the consolidated statements of operations. Bad debt write-offs are made when management believes it is probable a receivable will not be recovered.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Inventories</i></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Inventories consist primarily of equipment constructed for resale and spare parts and are stated at the lower of cost or net realizable value, using the weighted-average cost method. Usage is recorded in cost of sales in the period that parts were issued to a project or used to service equipment. Inventories are carried at weighted average cost and periodically evaluated to identify obsolete or otherwise impaired parts that&#xa0;are written off when management determines usage is not probable. The Company estimates the balance of excess and obsolete inventory by analyzing inventory by age using last used and original purchase date and the existing sales pipeline for which the inventory could be used.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Assessment of Potential Impairments of Goodwill and Intangible Assets</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Goodwill is not amortized, but rather is reviewed annually (in the fourth quarter) or more frequently if indicators arise, for impairment. We do not have any indefinite-lived intangible assets other than goodwill. Such indicators include a decline in expected cash flows, a significant adverse change in legal factors or in the business climate, unanticipated competition, a decrease in our market capitalization to an amount less than the carrying value of our assets, or slower growth rates, among others.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Goodwill is allocated among and evaluated for impairment at the reporting unit level, which is defined as an operating segment or one level below an operating segment.&#xa0;We have two reporting units: the FUEL CHEM segment and the APC technology segment. Goodwill is only related to the FUEL CHEM segment.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our evaluation of goodwill impairment involves first assessing qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. We may bypass this qualitative assessment, or determine that based on our qualitative assessment considering the totality of events and circumstances including macroeconomic factors, industry and market considerations, current and projected financial performance, a sustained decrease in our share price, or other factors, that additional impairment analysis is necessary. This additional analysis involves comparing the current fair value of a reporting unit to its carrying value. Fuel Tech uses a discounted cash flow (DCF) model to determine the current fair value of its FUEL CHEM reporting unit as this methodology was deemed to best quantify the present values of our expected future cash flows and yield a fair value that should be in line with the aggregate market value placed on the outstanding common stock as reflected by the current stock price multiplied by the outstanding shares of common stock. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, costs to produce and working capital changes. Events outside our control, specifically market conditions that impact revenue growth assumptions, could significantly impact the fair value calculated. Management considers historical experience and all available information at the time the fair values of its reporting units are estimated. However, actual fair values that could be realized in an actual transaction may differ from those used to evaluate the impairment of goodwill.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The application of our DCF model in estimating the fair value of each reporting segment is based on the &#x2018;net asset&#x2019; approach to business valuation. In using this approach for each reportable segment, we forecast segment revenues and expenses out to perpetuity and then discount the resulting cash flows to their present value using an appropriate discount rate. The forecast considers, among other items, the current and expected business environment, expected changes in the fixed and variable cost structure as the business grows, and a revenue growth rate that we feel is both achievable and sustainable. The discount rate used is composed of a number of identifiable risk factors, including equity risk, company size, and certain company-specific risk factors such as our debt-to-equity ratio, among other factors, that when added together, results in a total return that a prudent investor would demand for an investment in our Company.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">In the event the estimated fair value of a reporting unit per the DCF model is less than the carrying value, additional analysis would be required. The additional analysis would compare the carrying amount of the reporting unit&#x2019;s goodwill with the implied fair value of that goodwill. The implied fair value of goodwill is the excess of the fair value of the reporting unit over the fair values assigned to all of the assets and liabilities of that unit as if the reporting unit was acquired in a business combination and the fair value of the reporting unit represented the purchase price.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The Company utilizes Accounting Standards Update (ASU) 2017-04, Intangibles-Goodwill and Other (Topic 350): Simplifying the Test for Goodwill Impairment for the annual goodwill impairment test.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech performed its annual goodwill impairment analysis for its FUEL CHEM reporting unit&#xa0;as of October 1, 2022&#xa0;and determined that no impairment of goodwill existed within the FUEL CHEM technology segment.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Impairment of Long-Lived Assets and Amortizable Intangible Assets</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Long-lived assets, including property&#xa0;and equipment&#xa0;and intangible assets, are reviewed for impairment when events and circumstances indicate that the carrying amount of the assets (or asset group) may not be recoverable. If impairment indicators exist, we perform a more detailed analysis and an impairment loss is recognized when either estimated future undiscounted cash flows expected to result from the use of the asset (or asset group) and its eventual disposition are less than the carrying amount or the determined fair value is less than the carrying amount. This process of analyzing impairment involves examining the operating condition of individual assets (or asset group) and estimating a fair value based upon current condition, relevant market factors and the remaining estimated operational life compared to the asset&#x2019;s remaining depreciable life. Quoted market prices and other valuation techniques are used to determine expected fair value. Due to the existence of impairment indicators, we performed a more detailed analysis of potential long-lived and intangible asset impairment in the APC technology asset group during the fourth quarter of 2022&#xa0;and determined no impairment exists. There was no impairment recorded during 2022.&#xa0;</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">A significant portion of our property and equipment is comprised of assets deployed at customer locations relating to our FUEL CHEM technology asset group, and due to the shorter-term duration over which this equipment is depreciated, the likelihood of impairment is mitigated. The discontinuation of a FUEL CHEM program at a customer site would most likely result in the re-deployment of all or most of the affected assets to another customer location rather than an impairment.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Valuation Allowance for Deferred Income Taxes</i></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Deferred tax assets represent deductible temporary differences and net operating loss and tax credit carryforwards. A valuation allowance is recognized if it is more likely than not that some portion of the deferred tax asset will not be realized. At the end of each reporting period, management reviews the realizability of the deferred tax assets. As part of this review, we consider if there are taxable temporary differences that could generate taxable income in the future, if there is the ability to carry back the net operating losses or credits, if there is a projection of future taxable income, and if there are any tax planning strategies that can be readily implemented. As required by ASC 740 "Income Taxes", a valuation allowance must be established when it is more likely than not that all or a portion of a deferred tax asset will not be realized. This assessment resulted in a valuation allowance on our deferred tax assets of $15,627&#xa0;and&#xa0;$14,950&#xa0;at&#xa0;December 31, 2022&#xa0;and&#xa0;2021, respectively.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Stock-Based Compensation</i></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We recognize compensation expense for employee equity awards ratably over the requisite service period of the award, adjusted for estimated forfeitures.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We utilize the Black-Scholes option-pricing model to estimate the fair value of stock option awards. Determining the fair value of stock options using the Black-Scholes model requires judgment, including estimates for (1) risk-free interest rate - an estimate based on the yield of zero-coupon treasury securities with a maturity equal to the expected life of the option; (2) expected volatility - an estimate based on the historical volatility of our common stock for a period equal to the expected life of the option; and (3) expected life of the option - an estimate based on historical experience including the effect of employee terminations.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><b>Recently Issued Accounting Pronouncements</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">In June 2016, the Financial Accounting Standards Board (FASB) issued ASU 2016-13,&#xa0;Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments,&#xa0;which amends the current accounting guidance and requires the measurement of all expected losses based on historical experience, current conditions and reasonable and supportable forecasts. For trade receivables, loans, and other financial instruments, we will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. </span>The standard will become effective for interim and annual periods beginning on January 1, 2023 for Fuel Tech. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. The Company is finalizing the impact of adoption, but we do not believe the adoption of this standard will have a material impact on our financial statements. Beginning on January 1, 2023, Fuel Tech will use the caption Allowance for Credit Losses and our expected credit loss model to calculate the allowance.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>2022 versus 2021</b></p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Highlights for the year ended December 31, 2022, compared to 2021:</p>
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     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="10" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">For the years ended December 31,</p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
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     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">2022</p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">2021</p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Change</p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
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    <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 55%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Revenues</b></p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">26,941</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">24,261</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">2,680</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
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    <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Costs and expenses:</b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#xa0;</b></td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#xa0;</b></td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#xa0;</b></td>
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    <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Cost of sales</p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">15,298</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">12,363</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">2,935</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
    </tr>

    <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Selling, general and administrative</p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">12,275</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">12,055</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">220</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
    </tr>

    <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Research and development</p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">895</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">1,332</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(437</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
    </tr>

    <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total costs and expenses</p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">28,468</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">25,750</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">2,718</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td>
    </tr>

    <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Operating loss</b></p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(1,527</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(1,489</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(38</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
    </tr>

    <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Interest expense</p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(17</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(19</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">2</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
    </tr>

    <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt">Interest income</p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">202</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">6</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">196</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
    </tr>

    <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Other (expense) income, net</p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(46</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">1,570</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(1,616</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
    </tr>

    <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>(Loss) income before income taxes</b></p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(1,388</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">68</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(1,456</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
    </tr>

    <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Income tax expense</p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(54</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(14</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(40</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td>
    </tr>

    <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Net (loss) income</b></p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(1,442</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">54</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(1,496</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
    </tr>

   </tbody>
  </table>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Revenues</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">Revenues for the years ended </span>December 31, 2022<span style="background-color:#ffffff;"> and </span>2021<span style="background-color:#ffffff;"> were </span>$26,941<span style="background-color:#ffffff;">&#xa0;and </span>$24,261<span style="background-color:#ffffff;">, respectively. The year-over-year increase of </span>$2,680<span style="background-color:#ffffff;">&#xa0;or </span>11%<span style="background-color:#ffffff;">, was driven by the increase in&#xa0;revenue in our APC technology segment&#xa0;in our U.S. and Italy operations, partially offset by a decrease in our FUEL CHEM technology segment. Our U.S. revenues increased by </span>$796<span style="background-color:#ffffff;">, or </span>4%<span style="background-color:#ffffff;">, from </span>$19,515<span style="background-color:#ffffff;">&#xa0;in&#xa0;</span>2021<span style="background-color:#ffffff;"> to </span>$20,311<span style="background-color:#ffffff;">&#xa0;in&#xa0;</span>2022<span style="background-color:#ffffff;">, and our international revenues increased by </span>$1,884<span style="background-color:#ffffff;">, or </span>40%<span style="background-color:#ffffff;">, from </span>$4,746<span style="background-color:#ffffff;">&#xa0;in&#xa0;</span>2021<span style="background-color:#ffffff;"> to </span>$6,630<span style="background-color:#ffffff;"> in </span>2022<span style="background-color:#ffffff;">.</span></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">Revenues for the APC technology segment were </span>$10,597<span style="background-color:#ffffff;"> for the year ended </span>December 31, 2022<span style="background-color:#ffffff;">, an increase of </span>$3,701<span style="background-color:#ffffff;">, or </span>54%<span style="background-color:#ffffff;">, versus fiscal </span>2021<span style="background-color:#ffffff;">. The increase in APC revenue for the twelve-month period ending </span>December 31, 2022<span style="background-color:#ffffff;"> in comparison to the prior year amount was principally related to the timing of project execution and new APC orders. Consolidated APC backlog&#xa0;was </span>$8,245<span style="background-color:#ffffff;"> and </span>$9,119<span style="background-color:#ffffff;">&#xa0;at&#xa0;</span>December 31, 2022<span style="background-color:#ffffff;"> and </span>2021<span style="background-color:#ffffff;">, respectively. Our&#xa0;backlog at&#xa0;</span>December 31, 2022<span style="background-color:#ffffff;">&#xa0;consists of U.S. domestic projects totaling </span>$6,358<span style="background-color:#ffffff;"> and international projects totaling </span>$1,887<span style="background-color:#ffffff;">.</span></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">Revenues for the FUEL CHEM technology segment for the year ended </span>December 31, 2022<span style="background-color:#ffffff;"> were </span>$16,344<span style="background-color:#ffffff;">, a&#xa0;decrease of </span>$1,021<span style="background-color:#ffffff;">, or </span>6%<span style="background-color:#ffffff;">, versus fiscal </span>2021<span style="background-color:#ffffff;">. The decrease in FUEL CHEM revenue was due to the loss of one customer due to permanent plant retirement, dispatch/demand, and unforeseen plant outages.&#xa0;We remain focused on attracting new customers in our FUEL CHEM business, for both coal and non-coal applications.&#xa0;Our ability to attract new coal customers continues to be affected by the electric demand market and fuel switching as a result of low natural gas prices.</span></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Cost of sales and gross margin</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">Consolidated cost of sales for the years ended </span>December 31, 2022<span style="background-color:#ffffff;"> and </span>2021<span style="background-color:#ffffff;"> were </span>$15,298<span style="background-color:#ffffff;">&#xa0;and </span>$12,363<span style="background-color:#ffffff;">, respectively. Consolidated gross margin percentages for the years ended </span>December 31, 2022<span style="background-color:#ffffff;"> and </span>2021<span style="background-color:#ffffff;"> were </span>43%<span style="background-color:#ffffff;"> and </span>49%<span style="background-color:#ffffff;">, respectively. The gross margins for the APC technology segment decreased to </span>35%<span style="background-color:#ffffff;"> in </span>2022<span style="background-color:#ffffff;"> from </span>49%<span style="background-color:#ffffff;"> in </span>2021<span style="background-color:#ffffff;">. The overall decrease in gross margin in the APC technology segment&#xa0;is primarily due to product and project mix and supply chain costs.&#xa0;Gross margin percentage for the FUEL CHEM technology segment remained flat at&#xa0;</span>49%<span style="background-color:#ffffff;">&#xa0;for the years ended </span>December 31, 2022<span style="background-color:#ffffff;"> and </span>2021<span style="background-color:#ffffff;">.</span></p>
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  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Selling, general and administrative</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">Selling, general and administrative&#xa0;expenses for the years ended </span>December 31, 2022<span style="background-color:#ffffff;"> and </span>2021<span style="background-color:#ffffff;"> were </span>$12,275<span style="background-color:#ffffff;">&#xa0;and </span>$12,055<span style="background-color:#ffffff;">, respectively. The increase of </span>$220<span style="background-color:#ffffff;">, or </span>2%<span style="background-color:#ffffff;">, is attributed to the following:</span></p>
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     <td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">&#x2022;</p> </td>
     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">An increase in employee related costs of $651</p> </td>
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     <td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#x2022;</p> </td>
     <td style="vertical-align:top;">An increase in travel expense of $59</td>
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     <td style="width:18pt;vertical-align:top;">&#x2022;</td>
     <td style="vertical-align:top;">A decrease in office and administrative costs relating to our foreign subsidiaries of $216</td>
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     <td style="width:18pt;vertical-align:top;">&#x2022;</td>
     <td style="vertical-align:top;">A decrease in other administrative costs of $119</td>
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     <td style="width:18pt;vertical-align:top;">&#x2022;</td>
     <td style="vertical-align:top;">A decrease in depreciation of $121</td>
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     <td style="width:18pt;vertical-align:top;">&#x2022;</td>
     <td style="vertical-align:top;">A decrease in professional services of $34</td>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Depreciation and Amortization</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Depreciation and amortization are calculated using the straight-line method and included in selling, general and administrative expense. For the years ended December 31, 2022 and 2021, the Company&#xa0;recorded depreciation of $352 and $584 and&#xa0;amortization of $88 and $157, respectively.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><br /> <b>Research and development</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Research and development&#xa0;expenses were $895&#xa0;and $1,332&#xa0;for the years ended December 31, 2022 and 2021, respectively.&#xa0;The decreases in expenditures were related to reduced employee related costs and timing of execution on current project initiatives.&#xa0;The expenditures in our research and development expenses were focused on new product development efforts in the pursuit of commercial applications for technologies outside of our traditional markets, and in the development and analysis of new technologies that could represent incremental market opportunities. This includes water treatment technologies and more specifically, our DGI&#x2122; Dissolved Gas Infusion Systems, an innovative alternative to current aeration technology. This infusion process has a variety of applications in the water and wastewater segments, including irrigation, treatment of natural waters, supply of oxygen for biological remediation and wastewater odor management. DGI&#x2122; technology benefits include improved treatment performance and reduced treatment time, and the potential for reduced energy consumption, along with lower installation and operating costs. Third party validation testing of the efficiency of transferring oxygen to a treatment basin has been completed and results have been published.</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Interest income</b></p>
  <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"><span style="background-color:#ffffff;">Interest income was&#xa0;</span>$202<span style="background-color:#ffffff;">&#xa0;for the year ended </span>December 31, 2022<span style="background-color:#ffffff;">&#xa0;compared to&#xa0;</span>$6<span style="background-color:#ffffff;">&#xa0;for the same period in&#xa0;</span>2021<span style="background-color:#ffffff;">. Interest income increased due to the interest income on the held-to-maturity (HTM) debt securities and money market funds.</span></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b><span style="background-color:#ffffff;">Other (expense) income, net</span></b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">Other expense, net was&#xa0;</span>$46<span style="background-color:#ffffff;">&#xa0;for the year ended&#xa0;</span>December 31, 2022<span style="background-color:#ffffff;">&#xa0;compared to Other income, net of&#xa0;</span>$1,570<span style="background-color:#ffffff;">&#xa0;in&#xa0;</span>2021<span style="background-color:#ffffff;">. The change of&#xa0;</span>$1,616<span style="background-color:#ffffff;">&#xa0;is due primarily to the forgiveness of the Paycheck Protection Program (PPP)&#xa0;Loan in 2021 for $1,556 of principal and $10 of accrued interest.</span></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Income tax benefit (expense)</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">For the year ended </span>December 31, 2022<span style="background-color:#ffffff;">, we recorded an income tax expense of </span>$54<span style="background-color:#ffffff;">&#xa0;on pre-tax loss of </span>$1,388<span style="background-color:#ffffff;">. Our effective tax rates were </span>-3.9%<span style="background-color:#ffffff;">&#xa0;and </span>20.6%<span style="background-color:#ffffff;">&#xa0;for the years ended </span>December 31, 2022<span style="background-color:#ffffff;"> and </span>2021<span style="background-color:#ffffff;">, respectively. For the year ended </span>December 31, 2021<span style="background-color:#ffffff;">, we recorded an income tax expense&#xa0;of </span>$14<span style="background-color:#ffffff;">&#xa0;on pre-tax income of </span>$68<span style="background-color:#ffffff;">. The effective tax rate for the year&#xa0;ended&#xa0;</span>December 31, 2022<span style="background-color:#ffffff;"> differed from the federal statutory rate of 21% as a result of establishing a deferred tax liability associated with a certain book-to-tax timing difference.&#xa0;</span></p>
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  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Liquidity and Sources of Capital</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>&#xa0;</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">At December 31, 2022<span style="background-color:#ffffff;">, we had cash and cash equivalents of </span>$23,328<span style="background-color:#ffffff;">&#xa0;(which includes $</span>10,768<span style="background-color:#ffffff;">&#xa0;of cash equivalents) and working capital of </span>$31,059<span style="background-color:#ffffff;">&#xa0;versus cash and cash equivalents of </span>$35,893<span style="background-color:#ffffff;">&#xa0;(excluding restricted cash of </span>$1,161<span style="background-color:#ffffff;">) and working capital of </span>$38,242<span style="background-color:#ffffff;">&#xa0;at&#xa0;</span>December 31, 2021<span style="background-color:#ffffff;">.&#xa0;We have no outstanding debt other than our outstanding letters of credit, under our Investment Collateral Security agreement with BMO Harris Bank, N.A.&#xa0;(the Investment Collateral Security agreement),&#xa0;which does not have any financial covenants.&#xa0;We expect to continue operating under this arrangement for the foreseeable future.&#xa0;</span></p>
  <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt 0pt 0pt 8pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">Operating activities used cash of </span>$4,139<span style="background-color:#ffffff;">&#xa0;for the year ended </span>December 31, 2022<span style="background-color:#ffffff;">, primarily due to an increase in accounts receivable balances of $4,448, an increase in prepaid expenses and other assets&#xa0;of $314, and an adjustment&#xa0;for non-cash items from our net loss from continuing operations for the&#xa0;provision for doubtful accounts of $106, partially offset by increases in accounts payable balances of $1,159 and accrued liabilities and other non-current liabilities of $355, and adjustments for non-cash items from our net loss from continuing operations for depreciation and amortization of $440 and&#xa0;stock compensation expense of $224.</span></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Operating activities provided cash of&#xa0;$761&#xa0;for the year ended&#xa0;December 31, 2021, primarily due to a decrease in accounts receivable balances of $3,794, a decrease in prepaid expenses and other assets&#xa0;of $634, and add backs of non-cash items from our net income from continuing operations for depreciation and amortization of $741, stock compensation expense of $82, and loss on sale of equipment of $54, partially offset by decreases in our accrued liabilities and other non-current liabilities of $1,404 and&#xa0;accounts payable balances of $772, an increase in inventory of $252, and&#xa0;adjustments for non-cash items from our net income from continuing operations for the gain on the PPP Loan forgiveness of $1,556 and provision for doubtful accounts of $619.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">Investing activities used cash of </span>$9,483<span style="background-color:#ffffff;">&#xa0;and </span>$84<span style="background-color:#ffffff;">&#xa0;for the years ended </span>December 31, 2022<span style="background-color:#ffffff;"> and </span>2021<span style="background-color:#ffffff;">, respectively. Investing activities for the years ended </span>December 31, 2022<span style="background-color:#ffffff;">&#xa0;primarily consisted&#xa0;of purchases of HTM debt securities as investments&#xa0;and the purchases of equipment, partially offset by the maturity&#xa0;of one HTM debt security.</span></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Financing activities used&#xa0;&#xa0;$17&#xa0;and provided&#xa0;$23,977&#xa0;of cash for the years ended December 31, 2022 and&#xa0;2021.&#xa0; In 2021, the Company issued common stock in connection with the private placement offering. Proceeds from the private placement offering were $25,812, partially offset by the costs related to the offering of $1,783. In 2020, the Company received a Paycheck Protection Plan loan of $1,556.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The effects&#xa0;of the COVID-19&#xa0;global pandemic have presented&#xa0;significant risks to the Company, not all of which the Company is able to fully evaluate or even foresee at the current time. Although the impact of the pandemic is difficult to quantify, the Company has experienced, and may continue to experience, reductions in demand for certain of our products&#xa0;due to the delay or abandonment of ongoing or anticipated projects due to our customers&#x2019;, suppliers&#x2019; and other third parties&#x2019; financial distress or concern regarding the volatility of global markets. Other direct&#xa0;or indirect&#xa0;COVID-19 related effects, such as supply chain disruptions and&#xa0;travel restrictions,&#xa0;have been impacting operations and financial performance to varying degrees. We continue to monitor our liquidity needs and in response to our recent periods of declines in revenue and net losses have taken measures to reduce expenses and restructure operations which we feel are necessary to ensure we maintain sufficient working capital and liquidity to operate the business and invest in our future. We have evaluated our ongoing business needs, and considered the cash requirements of our base business of Air Pollution Control and FUEL CHEM, as well as our efforts to wind-down our APC operations in China. This evaluation included consideration of the following: a) customer and revenue trends in our APC and FUEL CHEM business segments, b) current operating structure and expenditure levels, and c) the costs of winding down our APC operations in China as well as other research and development initiatives.&#xa0; Based on this analysis, management believes that currently we have sufficient cash and working capital to operate our base APC and FUEL CHEM businesses.&#xa0;We believe our current cash position and net cash flows expected to be generated from operations are adequate to fund planned operations&#xa0;of the Company for the next 12 months.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We expect capital expenditures in 2023 for the DGI business, maintenance of field equipment, computer and systems, and general office equipment. We expect to fund our capital expenditures with cash from operations or cash on hand.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">In June 2022, the Board of Directors approved an investment plan that would hold $10,000 in funds at BMO Harris Bank (BMO Harris) to be invested in held-to-maturity debt securities of United States (US) Treasuries, including Notes, Bonds, and Bills, or US Government Agency securities. In December 2022, the Board of Directors approved an additional investment of $10,000. The funds would be held in money market funds until they are invested in those securities. The investments would be structured to create a maturity &#x201c;ladder&#x201d; where the proceeds from maturities are re-invested to maintain a balance of short- and long-term investments based on the expected business needs. Maturities will be between three and thirty-six months. This strategy allows the Company to provide returns on excess cash, while managing liquidity and minimizing exposure to interest rate fluctuations.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">On February 11, 2021, Fuel Tech entered into a securities purchase agreement&#xa0;to issue and sell, in a private placement, 5,000,000 shares of Common Stock&#xa0;and 2,500,000 warrants exercisable for a total of 2,500,000 shares of Common Stock with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were&#xa0;$25,812, before deducting placement agent fees and offering expenses of $1,783.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">On April 17, 2020, the Company received $1,556 in loan proceeds from the PPP, established pursuant to the Coronavirus Aid, Relief, and Economic Security Act and administered by the U.S. Small Business Administration (SBA). On January 8, 2021&#xa0;the Company received full forgiveness from the SBA for the entire balance of loan proceeds used to&#xa0;fund its qualified payroll&#xa0;expenses. When the loan was forgiven,&#xa0;the Company reduced the non-current liability by the amount forgiven&#xa0;and recorded other income&#xa0;in the Consolidated Statement of Operations.&#xa0;&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">On June 30, 2022, the Company entered into the Investment Collateral Security agreement&#xa0;to use for the sole purpose of issuing standby letters of credit, which replaces the Cash Collateral Security agreement with BMO Harris Bank, N.A. (the Former Collateral agreement). The Investment Collateral Security agreement requires us to pledge our investments as collateral for 150% of the aggregate face amount of outstanding standby letters of credit. The Company pays 250 basis points on the face values of outstanding letters of credit. There are no financial covenants set forth in the Investment Collateral Security agreement. At December 31, 2022, the Company had outstanding standby lett<span style="background-color:#ffffff;">ers of credit totaling approximately </span>$689<span style="background-color:#ffffff;">&#xa0;under the Investment Collateral Security agreement. At </span>December 31, 2022<span style="background-color:#ffffff;">, the investments held as collateral totaled </span>$1,034<span style="background-color:#ffffff;">. Fuel Tech is committed to reimbursing the issuing bank for any payments made by the bank under these instru</span>ments. The outstanding standby letters of credit mature as follows:</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
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     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Total</b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>2023</b></p> </td>
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     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>2024</b></p> </td>
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     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>2025</b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Thereafter</b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
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     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Standby letters of credit and bank guarantees</p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
     <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">689</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
     <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">444</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
     <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">245</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
     <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#x2014;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
     <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#x2014;</td>
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     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total</p> </td>
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     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
     <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">689</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
     <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">444</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
     <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">245</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
     <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">&#x2014;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
     <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">&#x2014;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">On June 19, 2019, the Company entered into the Former Collateral agreement&#xa0;to use for the sole purpose of issuing standby letters of credit. The Former Collateral agreement requires us to pledge as cash collateral 105% of the aggregate face amount of outstanding standby letters of credit. The Company paid&#xa0;250 basis points on the face values of outstanding letters of credit. There were no financial covenants set forth in the Former Collateral agreement. At December 31, 2022, the Company had no outstanding standby letters of credit under the Former Collateral agreement.&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item7a" title="item7a" href="#"></a>ITEM&#xa0;7A - QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our earnings and cash flow are subject to fluctuations due to changes in foreign currency exchange rates. We do not enter into foreign currency forward contracts or into foreign currency option contracts to manage this risk due to the nature of the transactions involved.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We are also exposed to changes in interest rates primarily due to our debt arrangement (refer to Note 11 to the consolidated financial statements). A hypothetical 100 basis point adverse move in interest rates along the entire interest rate yield curve would not have a materially adverse effect on interest expense during the year ended December 31, 2022.</p>
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item8" title="item8" href="#"></a>ITEM&#xa0;8 - FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA</b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>&#xa0;</b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Report of Independent Registered Public Accounting Firm</b></p>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Stockholders and the Board of Directors of Fuel Tech, Inc.</p>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Opinion on the Financial Statements</b></p>
<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">


 <!--Created on 3/9/2021 6:10:25 AM -->
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<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">We have audited the accompanying consolidated balance sheets of Fuel Tech, Inc. (the Company) as of December&#xa0;31, 2022&#xa0;and 2021, the related consolidated statements of operations, comprehensive loss, stockholders&#x2019; equity and cash flows for the years then ended, and the related notes to the consolidated financial statements (collectively, the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of December&#xa0;31, 2022&#xa0;and 2021, and the results of its operations and its cash flows for the years then ended, in conformity with accounting principles generally accepted in the United States of America.</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"><b>Basis for Opinion</b></p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">These financial statements are the responsibility of the Company&#x2019;s management. Our responsibility is to express an opinion on the Company&#x2019;s financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audits we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company&#x2019;s internal control over financial reporting. Accordingly, we express no such opinion.</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.</p>
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<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"><b>Critical Audit Matters</b></p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">The critical audit matters communicated below are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1)&#xa0;relate to accounts or disclosures that are material to the financial statements and (2)&#xa0;involved our especially challenging, subjective or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"><b>Impairment of Goodwill </b></p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">As described in Note 1 of the financial statements, goodwill is tested for impairment at least annually as of the first day of the Company&#x2019;s fourth quarter, or more frequently if events or changes in circumstances indicate that the carrying value may not be recoverable. The Company&#x2019;s evaluation of goodwill impairment involves the comparison of the fair value of the Company&#x2019;s reporting units to their carrying values. The Company uses a discounted cash flow analysis to determine the current fair value of the Company&#x2019;s FUEL CHEM reporting unit. This requires management to make significant estimates and assumptions including estimates of future growth rates, operating margins and discount rates based on the estimated weighted average cost of capital for the business. Changes in these assumptions could have a significant impact on the fair value, which could have an impact on the conclusion of impairment, if any.</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">The Company performed its impairment analysis as of October&#xa0;1, 2022. As part of the impairment assessment, the Company&#x2019;s management determined that the fair value of the FUEL CHEM reporting unit exceeded its carrying value. As a result, no impairment charge was recorded in the consolidated statement of operations for the year ended December&#xa0;31, 2022. Key financial assumptions used to determine the discounted cash flows of the reporting unit were developed by management.</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">We identified the evaluation of goodwill impairment as a critical audit matter because of the significant assumptions and judgments made by management within the discounted cash flow analysis used to determine the fair value of the Company&#x2019;s FUEL CHEM reporting unit. Auditing the reasonableness of management&#x2019;s key assumptions, including revenue growth rates, operating margins, and discount rates involved a high degree of auditor judgment and an increased effort, including the use of our fair value specialists.</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">Our audit procedures related to revenue growth rates, operating margins, and discount rates used to evaluate the Company&#x2019;s FUEL CHEM reporting unit for impairment included the following, among others:</p>
<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<table style="width:100%;font-family:Times New Roman;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:34pt;">&#xa0;</td><td style="vertical-align:top;width:18pt;"> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#x25cf;</p> </td><td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">With the assistance of our fair value specialists, we evaluated the reasonableness of the discount rate and tested the relevance and reliability of source information underlying the determination of the rate, tested the mathematical accuracy of the calculation, and developed a range of independent estimates and compared those to the rate selected by management.</p> </td></tr>
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<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<table style="width:100%;font-family:Times New Roman;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:34pt;">&#xa0;</td><td style="vertical-align:top;width:18pt;"> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#x25cf;</p> </td><td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">We evaluated reasonableness of management&#x2019;s forecasted revenue growth rates and operating margins by comparing to historical results and industry forecasts.</p> </td></tr>
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<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<table style="width:100%;font-family:Times New Roman;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:34pt;">&#xa0;</td><td style="vertical-align:top;width:18pt;"> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#x25cf;</p> </td><td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">We evaluated management&#x2019;s ability to accurately forecast revenue and operating margins by comparing management&#x2019;s prior forecasts to actual results.</p> </td></tr>
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<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
<table style="width:100%;font-family:Times New Roman;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:34pt;">&#xa0;</td><td style="vertical-align:top;width:18pt;"> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#x25cf;</p> </td><td style="vertical-align:top;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;margin:0pt;">We evaluated the impact of changes to significant assumptions on the determination of whether impairment exists.</p> </td></tr>
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<p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
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<p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Revenue Recognition</b></p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">As described in Note 1 of the financial statements, revenue for the Company&#x2019;s Air Pollution Control technology contracts is recognized based on the extent of progress towards completion of the contract compared to the estimated effort to complete the contract. The Company uses a cost-to-cost input method of measuring progress on these contracts. Under the cost-to-cost input measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred.</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">&#xa0;</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">We identified revenue recognition over time for the Company&#x2019;s Air Pollution Control technology contracts as a critical audit matter because of certain significant assumptions management makes when measuring progress, including assumptions related to expected total costs to complete the contract. Auditing these assumptions involved a high degree of auditor judgement and an increase in audit effort due to the impact these assumptions have on the amount of revenue recognized.</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">&#xa0;</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">Our audit procedures related to the evaluation of management&#x2019;s estimation of revenue recognized include the following, among others:</p>
<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">&#xa0;</p>
<table style="width: 100%; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="vertical-align: top; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><td style="width: 36pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 18pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">&#x25cf;</p> </td><td style="width: auto; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">We evaluated management&#x2019;s ability to accurately forecast project costs by comparing management&#x2019;s prior forecasts of estimated costs to actual results.</p> </td></tr>
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<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">&#xa0;</p>
<table style="width: 100%; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="vertical-align: top; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><td style="width: 36pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 18pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">&#x25cf;</p> </td><td style="width: auto; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">We selected a sample of customer contracts and evaluated management&#x2019;s calculation of revenue recognized over time by performing the following procedures:</p> </td></tr>
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<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">&#xa0;</p>
<table style="width: 100%; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="vertical-align: top; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><td style="width: 36pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; text-indent: 9pt; padding-left: 9pt;">&#xa0;</td><td style="width: 18pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">&#x2013;</p> </td><td style="width: auto; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">Evaluating whether contract terms that may affect revenue recognition were identified and properly considered and performance obligations were appropriately identified.</p> </td></tr>
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<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">&#xa0;</p>
<table style="width: 100%; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="vertical-align: top; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><td style="width: 36pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-left: 9pt;">&#xa0;</td><td style="width: 18pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">&#x2013;</p> </td><td style="width: auto; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">Obtaining and reviewing contracts with customers, including change orders to evaluate whether the transaction price was appropriately identified.</p> </td></tr>
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<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">&#xa0;</p>
<table style="width: 100%; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="vertical-align: top; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><td style="width: 36pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-left: 9pt;">&#xa0;</td><td style="width: 18pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">&#x2013;</p> </td><td style="width: auto; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">Testing management&#x2019;s revenue recognition calculation model for mathematical accuracy.</p> </td></tr>
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<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; font-variant: normal; margin: 0pt;">&#xa0;</p>
<table style="width: 100%; text-indent: 0px; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="vertical-align: top; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><td style="width: 36pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-left: 9pt;">&#xa0;</td><td style="width: 18pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: 'Times New Roman', Times, serif;font-size: 10pt;font-variant:normal;margin:0pt;">&#x2013;</p> </td><td style="width: auto; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">Assessing the validity of data used in the model for completeness and accuracy by agreeing, on a sample basis, key data inputs to source documents, including job costing reports and project budgets.</td></tr>
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<table style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="vertical-align:top;width:100%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ <ix:nonNumeric name="dei:AuditorName" contextRef="d_2022-01-01_2022-12-31">RSM US LLP</ix:nonNumeric></p> </td></tr>
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<tr><td style="vertical-align:bottom;width:100%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">We have served as the Company's auditor since 2010.</p> </td></tr>
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<tr><td style="vertical-align:top;width:100%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><ix:nonNumeric name="dei:AuditorLocation" contextRef="d_2022-01-01_2022-12-31">Chicago, Illinois</ix:nonNumeric></p> </td></tr>
<tr><td style="vertical-align:top;width:100%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">March 7, 2023</p> </td></tr>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Fuel Tech, Inc.</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Consolidated Balance Sheets</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">(<i>in thousands of dollars, except share and per-share data</i>)</p>
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>ASSETS</b></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#xa0;</b></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#xa0;</b></td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Current assets:</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Cash and cash equivalents</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229906" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:CashAndCashEquivalentsAtCarryingValue" scale="3" format="ixt:numdotdecimal" decimals="-3">23,328</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229907" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:CashAndCashEquivalentsAtCarryingValue" scale="3" format="ixt:numdotdecimal" decimals="-3">35,893</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Restricted cash</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229908" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229909" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue" scale="3" format="ixt:numdotdecimal" decimals="-3">891</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 9pt;">Short-term investments</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94229910" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:ShortTermInvestments" scale="3" format="ixt:numdotdecimal" decimals="-3">2,981</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94229911" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:ShortTermInvestments" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Accounts receivable, net</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229912" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AccountsReceivableNetCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">7,729</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229913" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AccountsReceivableNetCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">3,259</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Inventories, net</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229914" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:InventoryNet" scale="3" format="ixt:numdotdecimal" decimals="-3">392</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229915" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:InventoryNet" scale="3" format="ixt:numdotdecimal" decimals="-3">348</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Prepaid expenses and other current assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229916" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:PrepaidExpenseAndOtherAssetsCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">1,395</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229917" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:PrepaidExpenseAndOtherAssetsCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">1,074</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total current assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229918" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AssetsCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">35,825</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229919" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AssetsCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">41,465</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Property and equipment, net</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229920" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentNet" scale="3" format="ixt:numdotdecimal" decimals="-3">4,435</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229921" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentNet" scale="3" format="ixt:numdotdecimal" decimals="-3">4,609</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Goodwill</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229922" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:Goodwill" scale="3" format="ixt:numdotdecimal" decimals="-3">2,116</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229923" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:Goodwill" scale="3" format="ixt:numdotdecimal" decimals="-3">2,116</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Other intangible assets, net</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229924" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:IntangibleAssetsNetExcludingGoodwill" scale="3" format="ixt:numdotdecimal" decimals="-3">397</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229925" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:IntangibleAssetsNetExcludingGoodwill" scale="3" format="ixt:numdotdecimal" decimals="-3">448</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Restricted cash</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229926" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:RestrictedCashAndCashEquivalentsNoncurrent" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229927" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:RestrictedCashAndCashEquivalentsNoncurrent" scale="3" format="ixt:numdotdecimal" decimals="-4">270</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Right-of-use operating lease assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229928" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OperatingLeaseRightOfUseAsset" scale="3" format="ixt:numdotdecimal" decimals="-3">197</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229929" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:OperatingLeaseRightOfUseAsset" scale="3" format="ixt:numdotdecimal" decimals="-3">242</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Long-term investments</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt"><ix:nonFraction id="c94229930" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:LongTermInvestments" scale="3" format="ixt:numdotdecimal" decimals="-4">6,360</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt"><ix:nonFraction id="c94229931" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:LongTermInvestments" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Other assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229932" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OtherAssetsNoncurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">794</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229933" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:OtherAssetsNoncurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">824</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94229934" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:Assets" scale="3" format="ixt:numdotdecimal" decimals="-3">50,124</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94229935" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:Assets" scale="3" format="ixt:numdotdecimal" decimals="-3">49,974</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>LIABILITIES AND STOCKHOLDERS&#x2019; EQUITY</b></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#xa0;</b></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#xa0;</b></td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Current liabilities:</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Accounts payable</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229938" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AccountsPayableCurrent" scale="3" format="ixt:numdotdecimal" decimals="-4">2,710</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229939" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AccountsPayableCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">1,561</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Accrued liabilities:</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Operating lease liabilities - current</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229941" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiabilityCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">125</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229942" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiabilityCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">113</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Employee compensation</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229943" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:EmployeeRelatedLiabilitiesCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">1,105</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229944" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:EmployeeRelatedLiabilitiesCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">688</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Other accrued liabilities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229945" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OtherAccruedLiabilitiesCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">826</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229946" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:OtherAccruedLiabilitiesCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">861</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total current liabilities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229947" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:LiabilitiesCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">4,766</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229948" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:LiabilitiesCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">3,223</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Operating lease liabilities - non-current</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229949" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiabilityNoncurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">66</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229950" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiabilityNoncurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">122</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Deferred income taxes</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229951" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredIncomeTaxLiabilitiesNet" scale="3" format="ixt:numdotdecimal" decimals="-3">177</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229952" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredIncomeTaxLiabilitiesNet" scale="3" format="ixt:numdotdecimal" decimals="-3">139</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Other liabilities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229953" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OtherLiabilitiesNoncurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">274</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229954" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:OtherLiabilitiesNoncurrent" scale="3" format="ixt:numdotdecimal" decimals="-4">290</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total liabilities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229955" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:Liabilities" scale="3" format="ixt:numdotdecimal" decimals="-3">5,283</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229956" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:Liabilities" scale="3" format="ixt:numdotdecimal" decimals="-3">3,774</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom" class="GFJY4-DFU-com-rdg-thunderdome-client-resources-CssResource-html-lineItem-v2v-addition"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Commitments and contingencies (Note 9)</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;<span style="-sec-ix-hidden:c94229958">&#xa0;</span></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;<span style="-sec-ix-hidden:c94229959">&#xa0;</span></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Stockholders&#x2019; equity:</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Common stock, $<span style="-sec-ix-hidden:c94229963"><span style="-sec-ix-hidden:c94229964">.01</span></span> par value, <span style="-sec-ix-hidden:c94229965"><span style="-sec-ix-hidden:c94229966">40,000,000</span></span> shares authorized, <span style="-sec-ix-hidden:c94229967">31,272,303</span> and <span style="-sec-ix-hidden:c94229968">31,227,300</span> shares issued, and <span style="-sec-ix-hidden:c94229969">30,296,297</span> and <span style="-sec-ix-hidden:c94229970">30,263,791</span> shares outstanding in 2022 and 2021, respectively</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229961" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:CommonStockValue" scale="3" format="ixt:numdotdecimal" decimals="-3">313</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229962" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:CommonStockValue" scale="3" format="ixt:numdotdecimal" decimals="-3">312</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Additional paid-in capital</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229971" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AdditionalPaidInCapitalCommonStock" scale="3" format="ixt:numdotdecimal" decimals="-3">164,422</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229972" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AdditionalPaidInCapitalCommonStock" scale="3" format="ixt:numdotdecimal" decimals="-3">164,199</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Accumulated deficit</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94229973" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:RetainedEarningsAccumulatedDeficit" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">115,991</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94229974" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:RetainedEarningsAccumulatedDeficit" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">114,549</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Accumulated other comprehensive loss</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94229975" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,728</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94229976" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,604</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Nil coupon perpetual loan notes</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229977" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:ConvertibleDebt" scale="3" format="ixt:numdotdecimal" decimals="-3">76</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229978" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:ConvertibleDebt" scale="3" format="ixt:numdotdecimal" decimals="-3">76</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Treasury stock, at cost (Note 5)</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94229979" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:TreasuryStockValue" scale="3" format="ixt:numdotdecimal" decimals="-3">2,251</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94229980" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:TreasuryStockValue" scale="3" format="ixt:numdotdecimal" decimals="-3">2,234</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total stockholders&#x2019; equity</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229981" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">44,841</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229982" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-5">46,200</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total liabilities and stockholders&#x2019; equity</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94229983" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:LiabilitiesAndStockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">50,124</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94229984" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:LiabilitiesAndStockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">49,974</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">See notes to consolidated financial statements.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Fuel Tech, Inc.</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Consolidated Statements of Operations</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">(<i>in thousands of dollars, except share and per-share data</i>)</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
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   <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;">
    <tbody>
     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">For the years ended December 31,</em></em></p> </td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td>
      <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td>
      <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Revenues</b></p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229989" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">26,941</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229990" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">24,261</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Costs and expenses:</b></p> </td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Cost of sales</p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229992" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:CostOfRevenue" scale="3" format="ixt:numdotdecimal" decimals="-3">15,298</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229993" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:CostOfRevenue" scale="3" format="ixt:numdotdecimal" decimals="-3">12,363</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Selling, general and administrative</p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229994" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:SellingGeneralAndAdministrativeExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">12,275</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229995" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:SellingGeneralAndAdministrativeExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">12,055</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Research and development</p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229996" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">895</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94229997" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">1,332</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Total costs and expenses</p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229998" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:CostsAndExpenses" scale="3" format="ixt:numdotdecimal" decimals="-3">28,468</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94229999" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:CostsAndExpenses" scale="3" format="ixt:numdotdecimal" decimals="-4">25,750</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Operating loss</b></p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230000" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:OperatingIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,527</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230001" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:OperatingIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,489</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Interest expense</p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230002" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:InterestExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">17</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230003" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:InterestExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">19</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt">Interest income</p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230004" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:InvestmentIncomeInterest" scale="3" format="ixt:numdotdecimal" decimals="-3">202</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230005" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:InvestmentIncomeInterest" scale="3" format="ixt:numdotdecimal" decimals="-3">6</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Other (expense) income, net</p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230006" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:OtherNonoperatingIncomeExpense" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">46</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230007" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:OtherNonoperatingIncomeExpense" scale="3" format="ixt:numdotdecimal" decimals="-4">1,570</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>(Loss) income before income taxes</b></p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230008" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,388</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230009" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" scale="3" format="ixt:numdotdecimal" decimals="-3">68</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Income tax expense</p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230010" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">54</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230011" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">14</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Net (loss) income</b></p> </td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
      <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230012" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,442</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
      <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230013" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">54</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Net (loss) income per common share:</b></p> </td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Basic net (loss) income per common share</b></p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230015" contextRef="d_2022-01-01_2022-12-31" unitRef="USDPerShare" name="us-gaap:EarningsPerShareBasic" scale="0" format="ixt:numdotdecimal" decimals="INF" sign="-">0.05</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230016" contextRef="d_2021-01-01_2021-12-31" unitRef="USDPerShare" name="us-gaap:EarningsPerShareBasic" scale="0" format="ixt:numdotdecimal" decimals="-3">0.00</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Diluted net (loss) income per common share</b></p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230017" contextRef="d_2022-01-01_2022-12-31" unitRef="USDPerShare" name="us-gaap:EarningsPerShareDiluted" scale="0" format="ixt:numdotdecimal" decimals="INF" sign="-">0.05</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230018" contextRef="d_2021-01-01_2021-12-31" unitRef="USDPerShare" name="us-gaap:EarningsPerShareDiluted" scale="0" format="ixt:numdotdecimal" decimals="-3">0.00</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Weighted-average number of common shares outstanding:</b></p> </td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Basic</p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230020" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:WeightedAverageNumberOfSharesOutstandingBasic" scale="0" format="ixt:numdotdecimal" decimals="INF">30,289,000</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230021" contextRef="d_2021-01-01_2021-12-31" unitRef="Share" name="us-gaap:WeightedAverageNumberOfSharesOutstandingBasic" scale="0" format="ixt:numdotdecimal" decimals="INF">29,585,000</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Diluted</p> </td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230022" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">30,289,000</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230023" contextRef="d_2021-01-01_2021-12-31" unitRef="Share" name="us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">29,694,000</ix:nonFraction></td>
      <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
     </tr>

    </tbody>
   </table>
  </div>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">See notes to consolidated financial statements.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <div class="PGBK" style="width: 100%; margin-left: 0pt; margin-right: 0pt">
   <div class="PGFTR" style="text-align: center; width: 100%">
    <div class="hf-row">
     <div class="hf-cell PGNUM" style="text-align: center; font-size: 10pt; font-family: Times New Roman;">
       22
     </div>
    </div>
   </div>
   <hr style="PAGE-BREAK-AFTER: always; border: none; width: 100%; height: 2px; color: #000000; background-color: #000000" />
   <div class="PGHDR" style="text-align: left; width: 100%">
    <div class="hf-row">
     <div class="hf-cell TOCLink" style="display: inline-block; text-align: left;">
      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
     </div>
    </div>
   </div>
  </div>
  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
  <div>
    &#xa0;
  </div>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Fuel Tech, Inc.</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Consolidated Statements of Comprehensive Loss</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">(<i>in thousands of dollars</i>)</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <div>
   <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;">
    <tbody>
     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">For the years ended December 31,</em></em></p> </td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Net (loss) income</p> </td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td>
      <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230028" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,442</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td>
      <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230029" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">54</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Other comprehensive loss:</p> </td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Foreign currency translation adjustments</p> </td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230031" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">124</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230032" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">234</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Total other comprehensive loss</p> </td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230033" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:OtherComprehensiveIncomeLossNetOfTax" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">124</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230034" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:OtherComprehensiveIncomeLossNetOfTax" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">234</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Comprehensive loss</p> </td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
      <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230035" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ComprehensiveIncomeNetOfTax" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,566</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
      <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230036" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ComprehensiveIncomeNetOfTax" scale="3" format="ixt:numdotdecimal" decimals="-4" sign="-">180</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
     </tr>

    </tbody>
   </table>
  </div>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">See notes to consolidated financial statements.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <div class="PGBK" style="width: 100%; margin-left: 0pt; margin-right: 0pt">
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     <div class="hf-cell PGNUM" style="text-align: center; font-size: 10pt; font-family: Times New Roman;">
       23
     </div>
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   <div class="PGHDR" style="text-align: left; width: 100%">
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
     </div>
    </div>
   </div>
  </div>
  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
  <div>
    &#xa0;
  </div>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Fuel Tech, Inc.</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Consolidated Statements of Stockholders&#x2019; Equity</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">(<i>in thousands of dollars or shares, as appropriate</i>) &#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <div>
   <table cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 9pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px; margin-left: 0pt; margin-right: 0pt;">
    <tbody>
     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 29%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: thin solid rgb(0, 0, 0); width: 9%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt; text-align: center;"><em style="font: inherit;"><em style="font: inherit;">Common Stock</em></em></p> </td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; width: 1%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt; text-align: center;"><em style="font: inherit;">Additional Paid-in</em></p> </td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; width: 1%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt; text-align: center;"><em style="font: inherit;">Accumulated</em></p> </td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; width: 1%; padding: 0px;"><em style="font: inherit;">Accumulated Other Comprehensive</em></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%;"><em style="font: inherit;">&#xa0;</em></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 29%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); width: 1%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt; text-align: center;"><em style="font: inherit;">Stock</em></p> </td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); width: 1%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt; text-align: center;"><em style="font: inherit;">Total</em></p> </td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; width: 1%;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 5%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0"><ix:nonFraction id="c94230053" contextRef="i_2020-12-31_StatementEquityComponentsAxis-CommonStockOutstandingMember" unitRef="Share" name="us-gaap:SharesOutstanding" scale="3" format="ixt:numdotdecimal" decimals="-3">25,229</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 5%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0"><ix:nonFraction id="c94230054" contextRef="i_2020-12-31_StatementEquityComponentsAxis-CommonStockOutstandingMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">262</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0"><ix:nonFraction id="c94230055" contextRef="i_2020-12-31_StatementEquityComponentsAxis-AdditionalPaidInCapitalMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">140,138</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230056" contextRef="i_2020-12-31_StatementEquityComponentsAxis-RetainedEarningsMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">114,603</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">)</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230057" contextRef="i_2020-12-31_StatementEquityComponentsAxis-AccumulatedOtherComprehensiveIncomeMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-4" sign="-">1,370</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">)</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0"><ix:nonFraction id="c94230058" contextRef="i_2020-12-31_StatementEquityComponentsAxis-NilCouponPerpetualLoanNotesMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">76</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230059" contextRef="i_2020-12-31_StatementEquityComponentsAxis-TreasuryStockMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">2,182</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">)</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">$</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding: 0; margin: 0">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 5%;"><em style="font: inherit;">&#xa0;</em></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 5%;"><ix:nonFraction id="c94230062" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-CommonStockOutstandingMember" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%;"><ix:nonFraction id="c94230063" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-AdditionalPaidInCapitalMember" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;"><ix:nonFraction id="c94230064" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-RetainedEarningsMember" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">54</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 7%;"><ix:nonFraction id="c94230065" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-AccumulatedOtherComprehensiveIncomeMember" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%;"><ix:nonFraction id="c94230066" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-NilCouponPerpetualLoanNotesMember" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%;"><ix:nonFraction id="c94230067" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-TreasuryStockMember" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;"><ix:nonFraction id="c94230068" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">54</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;">&#xa0;</td>
     </tr>

     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 29%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt;">Foreign currency translation adjustments</p> </td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 5%;"><em style="font: inherit;">&#xa0;</em></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 5%;"><ix:nonFraction id="c94230070" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-CommonStockOutstandingMember" unitRef="USD" name="us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%;"><ix:nonFraction id="c94230071" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-AdditionalPaidInCapitalMember" unitRef="USD" name="us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%;"><ix:nonFraction id="c94230072" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-RetainedEarningsMember" unitRef="USD" name="us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
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     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
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     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 29%"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Common stock issued in connection with private placement, net</p> </td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt">&#xa0;</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%">&#xa0;</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 29%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt 0pt 0pt 9pt; text-indent: -9pt;">Common stock issued upon vesting of restricted stock units</p> </td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;">&#xa0;</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%;"><ix:nonFraction id="c94230099" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-TreasuryStockMember" unitRef="USD" name="us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;"><ix:nonFraction id="c94230100" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td>
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     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 29%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt;">Treasury shares withheld</p> </td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px;">&#xa0;</td>
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     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
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     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 29%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt;">Foreign currency translation adjustments</p> </td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
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     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
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      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 5%;"><ix:nonFraction id="c94230134" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-CommonStockOutstandingMember" unitRef="USD" name="us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%;"><ix:nonFraction id="c94230139" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-TreasuryStockMember" unitRef="USD" name="us-gaap:AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
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     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
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      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;">)</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 7%;"><ix:nonFraction id="c94230145" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-AccumulatedOtherComprehensiveIncomeMember" unitRef="USD" name="us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%;"><ix:nonFraction id="c94230147" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-TreasuryStockMember" unitRef="USD" name="us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;"><ix:nonFraction id="c94230148" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:StockIssuedDuringPeriodValueRestrictedStockAwardGross" scale="3" format="ixt:zerodash" decimals="-3">-</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt;">&#xa0;</td>
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     <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 29%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt;">Treasury shares withheld</p> </td>
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      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; padding-bottom: 1px;">&#xa0;</td>
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      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 5%; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230150" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-CommonStockOutstandingMember" unitRef="USD" name="us-gaap:TreasuryStockValueAcquiredCostMethod" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; padding-bottom: 1px;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; padding-bottom: 1px;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230151" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-AdditionalPaidInCapitalMember" unitRef="USD" name="us-gaap:TreasuryStockValueAcquiredCostMethod" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; padding-bottom: 1px;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; padding-bottom: 1px;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230152" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-RetainedEarningsMember" unitRef="USD" name="us-gaap:TreasuryStockValueAcquiredCostMethod" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; padding-bottom: 1px;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; padding-bottom: 1px;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 7%; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230153" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-AccumulatedOtherComprehensiveIncomeMember" unitRef="USD" name="us-gaap:TreasuryStockValueAcquiredCostMethod" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; padding-bottom: 1px;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; padding-bottom: 1px;">&#xa0;</td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 6%; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230154" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-NilCouponPerpetualLoanNotesMember" unitRef="USD" name="us-gaap:TreasuryStockValueAcquiredCostMethod" scale="3" xsi:nil="true"></ix:nonFraction></td>
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 1%; padding-bottom: 1px;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230155" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-TreasuryStockMember" unitRef="USD" name="us-gaap:TreasuryStockValueAcquiredCostMethod" scale="3" format="ixt:numdotdecimal" decimals="-3">17</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230156" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:TreasuryStockValueAcquiredCostMethod" scale="3" format="ixt:numdotdecimal" decimals="-3">17</ix:nonFraction></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
     </tr>

     <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
      <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; width: 29%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin: 0pt;"><b>Balance at December 31, 2022</b></p> </td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
      <td style="width: 5%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b><ix:nonFraction id="c94230157" contextRef="i_2022-12-31_StatementEquityComponentsAxis-CommonStockOutstandingMember" unitRef="Share" name="us-gaap:SharesOutstanding" scale="3" format="ixt:numdotdecimal" decimals="-3">30,296</ix:nonFraction></b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
      <td style="width: 5%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b><ix:nonFraction id="c94230158" contextRef="i_2022-12-31_StatementEquityComponentsAxis-CommonStockOutstandingMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">313</ix:nonFraction></b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b><ix:nonFraction id="c94230159" contextRef="i_2022-12-31_StatementEquityComponentsAxis-AdditionalPaidInCapitalMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">164,422</ix:nonFraction></b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b>(<ix:nonFraction id="c94230160" contextRef="i_2022-12-31_StatementEquityComponentsAxis-RetainedEarningsMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">115,991</ix:nonFraction></b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; padding-bottom: 1px;"><b>)</b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
      <td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b>(<ix:nonFraction id="c94230161" contextRef="i_2022-12-31_StatementEquityComponentsAxis-AccumulatedOtherComprehensiveIncomeMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,728</ix:nonFraction></b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; padding-bottom: 1px;"><b>)</b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b><ix:nonFraction id="c94230162" contextRef="i_2022-12-31_StatementEquityComponentsAxis-NilCouponPerpetualLoanNotesMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">76</ix:nonFraction></b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b>(<ix:nonFraction id="c94230163" contextRef="i_2022-12-31_StatementEquityComponentsAxis-TreasuryStockMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">2,251</ix:nonFraction></b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; padding-bottom: 1px;"><b>)</b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt;">&#xa0;</td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td>
      <td style="width: 6%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b><ix:nonFraction id="c94230164" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">44,841</ix:nonFraction></b></td>
      <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 9pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
     </tr>

    </tbody>
   </table>
  </div>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">See notes to consolidated financial statements.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
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    &#xa0;
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Fuel Tech, Inc.</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Consolidated Statements of Cash Flows</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">(<i>in thousands of dollars</i>)</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <div>
   <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">For the years ended December 31,</em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>OPERATING ACTIVITIES</b></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><b>&#xa0;</b></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><b>&#xa0;</b></td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Net (loss) income</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230170" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,442</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230171" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">54</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:</p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Depreciation</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230173" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:Depreciation" scale="3" format="ixt:numdotdecimal" decimals="-3">352</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230174" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:Depreciation" scale="3" format="ixt:numdotdecimal" decimals="-3">584</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Amortization</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230175" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:AdjustmentForAmortization" scale="3" format="ixt:numdotdecimal" decimals="-3">88</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230176" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:AdjustmentForAmortization" scale="3" format="ixt:numdotdecimal" decimals="-3">157</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Loss on sale of equipment</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230177" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:GainLossOnSaleOfPropertyPlantEquipment" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230178" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:GainLossOnSaleOfPropertyPlantEquipment" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">54</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom" class="GFJY4-DFU-com-rdg-thunderdome-client-resources-CssResource-html-lineItem-v2v-addition"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 18pt;">Non-cash interest income on held-to-maturity securities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">(<ix:nonFraction id="c94231624" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:InterestAndDividendIncomeSecuritiesHeldToMaturity" scale="3" format="ixt:numdotdecimal" decimals="-3">5</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94231625" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:InterestAndDividendIncomeSecuritiesHeldToMaturity" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Provision for doubtful accounts, net of recoveries</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230179" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ProvisionForDoubtfulAccounts" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">106</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230180" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ProvisionForDoubtfulAccounts" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">619</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Deferred income taxes</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230181" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:DeferredIncomeTaxesAndTaxCredits" scale="3" format="ixt:numdotdecimal" decimals="-3">38</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"><ix:nonFraction id="c94230182" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:DeferredIncomeTaxesAndTaxCredits" scale="3" format="ixt:numdotdecimal" decimals="-3">5</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Stock-based compensation, net of forfeitures</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230183" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ShareBasedCompensation" scale="3" format="ixt:numdotdecimal" decimals="-3">224</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230184" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ShareBasedCompensation" scale="3" format="ixt:numdotdecimal" decimals="-3">82</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt 0pt 0pt 9pt; text-indent: 9pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Gain of forgiveness on Paycheck Protection Plan Loan</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230185" contextRef="d_2022-01-01_2022-12-31_DebtInstrumentAxis-PaycheckProtectionProgramCaresActMember" unitRef="USD" name="us-gaap:GainsLossesOnExtinguishmentOfDebt" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230186" contextRef="d_2021-01-01_2021-12-31_DebtInstrumentAxis-PaycheckProtectionProgramCaresActMember" unitRef="USD" name="us-gaap:GainsLossesOnExtinguishmentOfDebt" scale="3" format="ixt:numdotdecimal" decimals="-3">1,556</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Changes in operating assets and liabilities:</p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 36pt;">Accounts receivable</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230188" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncreaseDecreaseInAccountsReceivable" scale="3" format="ixt:numdotdecimal" decimals="-3">4,448</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230189" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncreaseDecreaseInAccountsReceivable" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">3,794</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 36pt;">Inventories</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230190" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncreaseDecreaseInInventories" scale="3" format="ixt:numdotdecimal" decimals="-3">45</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230191" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncreaseDecreaseInInventories" scale="3" format="ixt:numdotdecimal" decimals="-3">252</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 36pt;">Prepaid expenses, other current assets and other non-current assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230192" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">314</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230193" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">634</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 36pt;">Accounts payable</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230194" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncreaseDecreaseInAccountsPayable" scale="3" format="ixt:numdotdecimal" decimals="-3">1,159</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230195" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncreaseDecreaseInAccountsPayable" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">772</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom" class="GFJY4-DFU-com-rdg-thunderdome-client-resources-CssResource-html-lineItem-v2v-addition"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 36pt;">Accrued liabilities and other non-current liabilities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230196" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncreaseDecreaseInAccruedLiabilities" scale="3" format="ixt:numdotdecimal" decimals="-4">360</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230197" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncreaseDecreaseInAccruedLiabilities" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,404</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Net cash (used in) provided by operating activities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230198" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:NetCashProvidedByUsedInOperatingActivities" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">4,139</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230199" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:NetCashProvidedByUsedInOperatingActivities" scale="3" format="ixt:numdotdecimal" decimals="-3">761</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>INVESTING ACTIVITIES</b></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><b>&#xa0;</b></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><b>&#xa0;</b></td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Purchases of equipment and patents</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230201" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:PaymentsToAcquireProductiveAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">206</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230202" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:PaymentsToAcquireProductiveAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">84</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 9pt;">Purchases of debt securities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230203" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:PaymentsToAcquireHeldToMaturitySecurities" scale="3" format="ixt:numdotdecimal" decimals="-3">9,777</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230204" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:PaymentsToAcquireHeldToMaturitySecurities" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-top: 0px; padding-right: 0px; padding-left: 0px; margin: 0px;"> <p style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 9pt;">Maturities of debt securities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0px 0px 1px; margin: 0px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-top: 0px; padding-right: 0px; padding-left: 0px; margin: 0px; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-top: 0px; padding-right: 0px; padding-left: 0px; margin: 0px; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230205" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" scale="3" format="ixt:numdotdecimal" decimals="-5">500</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0px 0px 1px; margin: 0px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0px 0px 1px; margin: 0px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-top: 0px; padding-right: 0px; padding-left: 0px; margin: 0px; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-top: 0px; padding-right: 0px; padding-left: 0px; margin: 0px; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230206" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0px 0px 1px; margin: 0px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Net cash used in investing activities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230207" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:NetCashProvidedByUsedInInvestingActivities" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">9,483</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230208" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:NetCashProvidedByUsedInInvestingActivities" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">84</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>FINANCING ACTIVITIES</b></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><b>&#xa0;</b></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><b>&#xa0;</b></td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 9pt;">Proceeds from sale of common stock issued in connection with private placement</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230210" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ProceedsFromIssuanceOfPrivatePlacement" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230211" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ProceedsFromIssuanceOfPrivatePlacement" scale="3" format="ixt:numdotdecimal" decimals="-3">25,812</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 9pt;">Costs related to sale of common stock issued in connection with private placement</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230212" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:PaymentsOfStockIssuanceCosts" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230213" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:PaymentsOfStockIssuanceCosts" scale="3" format="ixt:numdotdecimal" decimals="-3">1,783</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Taxes paid on behalf of equity award participants</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230214" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:PaymentsForRepurchaseOfEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">17</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230215" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:PaymentsForRepurchaseOfEquity" scale="3" format="ixt:numdotdecimal" decimals="-3">52</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Net cash (used in) provided by financing activities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230216" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:NetCashProvidedByUsedInFinancingActivities" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">17</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230217" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:NetCashProvidedByUsedInFinancingActivities" scale="3" format="ixt:numdotdecimal" decimals="-3">23,977</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Effect of exchange rate fluctuations on cash</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230218" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">87</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230219" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">206</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Net (decrease) increase in cash, cash equivalents and restricted cash</b></p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230220" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">13,726</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230221" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" scale="3" format="ixt:numdotdecimal" decimals="-3">24,448</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Cash, cash equivalents and restricted cash at beginning of period</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230222" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" scale="3" format="ixt:numdotdecimal" decimals="-3">37,054</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230223" contextRef="i_2020-12-31" unitRef="USD" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" scale="3" format="ixt:numdotdecimal" decimals="-3">12,606</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Cash, cash equivalents and restricted cash at end of period</b></p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230224" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" scale="3" format="ixt:numdotdecimal" decimals="-3">23,328</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230225" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" scale="3" format="ixt:numdotdecimal" decimals="-3">37,054</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td><td>&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Supplemental Cash Flow Information:</p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt">Cash paid for:</p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom" class="GFJY4-DFU-com-rdg-thunderdome-client-resources-CssResource-html-lineItem-v2v-addition"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 18pt;">Cash income taxes paid (received), net</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230228" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncomeTaxesPaidNet" scale="3" format="ixt:numdotdecimal" decimals="-3">14</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230229" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncomeTaxesPaidNet" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">51</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td></tr>
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Notes to Consolidated Financial Statements</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">(<i>in thousands of dollars, except share and per-share data</i>)</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">1.</em></b>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;<b>ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Organization</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech, Inc. and subsidiaries ("Fuel Tech", the "Company", "we", "us" or "our") develops and provides proprietary technologies for air pollution control, process optimization, water treatment, and advanced engineering services. Our primary focus is on the worldwide marketing and sale of Air Pollution Control (APC) technologies and our FUEL CHEM program.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The Company&#x2019;s nitrogen oxide (NOx) reduction technologies reduce nitrogen oxide emissions from boilers, furnaces and other stationary combustion sources. To reduce NOx emissions, our technologies utilize advanced combustion modification techniques and post-combustion NOx control approaches including non-catalytic, catalytic and combined systems.&#xa0; The Company also provides solutions for the mitigation of particulate matter, including particulate control with electrostatic precipitator products and services, and using Flue Gas Conditioning (FGC) systems which modify the ash properties of particulate for improved collection efficiency. Our FUEL CHEM program is based on proprietary TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> Targeted In-Furnace&#x2122; Injection technology, in combination with advanced Computational Fluid Dynamics (CFD) and Chemical Kinetics Modeling (CKM) boiler modeling, in the unique application of specialty chemicals to improve the efficiency, reliability, fuel flexibility, boiler heat rate, and environmental status of combustion units by controlling slagging, fouling, corrosion, and opacity. Water treatment technologies include DGI&#x2122; Dissolved Gas Infusion Systems which utilize a patent-pending channel injector to deliver supersaturated oxygen solutions and other gas-water combinations to target process applications or environmental issues. This infusion process has a variety of applications in the water and wastewater segments, including irrigation, treatment of natural waters, supply of oxygen for biological remediation, and wastewater odor management.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our business is materially dependent on the continued existence and enforcement of air quality regulations, particularly in the U.S. We have expended significant resources in the research and development of new technologies in building our proprietary portfolio of air pollution control, fuel and boiler treatment chemicals, computer modeling and advanced visualization technologies.&#xa0;Many of Fuel Tech's products and services rely heavily on the Company's CFD modeling capabilities, which are enhanced by internally developed, high-end visualization software.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">International revenues were $<ix:nonFraction id="c94230232" contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-NonUsMember" unitRef="USD" name="us-gaap:Revenues" scale="3" format="ixt:numdotdecimal" decimals="-4">6,630</ix:nonFraction>&#xa0;and&#xa0;$<ix:nonFraction id="c94230234" contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-NonUsMember" unitRef="USD" name="us-gaap:Revenues" scale="3" format="ixt:numdotdecimal" decimals="-3">4,746</ix:nonFraction>&#xa0;for the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and&#xa0;<em style="font: inherit;">2021</em>, respectively. These amounts represented <ix:nonFraction id="c94230238" contextRef="i_2022-12-31_StatementGeographicalAxis-NonUsMember" unitRef="Pure" name="ftek:PercentageOfRevenue" scale="-2" format="ixt:numdotdecimal" decimals="2">25</ix:nonFraction>%&#xa0;and <ix:nonFraction id="c94230240" contextRef="i_2021-12-31_StatementGeographicalAxis-NonUsMember" unitRef="Pure" name="ftek:PercentageOfRevenue" scale="-2" format="ixt:numdotdecimal" decimals="1">20</ix:nonFraction>%&#xa0;of Fuel Tech&#x2019;s total revenues for the respective periods of time. Foreign currency changes did <em style="font: inherit;">not</em> have a material impact on the calculation of these percentages. We have foreign offices in Beijing, China and Gallarate, Italy.</p>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:BasisOfAccountingPolicyPolicyTextBlock" id="c94232735" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Basis of Presentation</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The consolidated financial statements include the accounts of Fuel Tech and its wholly owned subsidiaries.&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (GAAP). The books and records of subsidiaries located in foreign countries are maintained according to generally accepted accounting principles in those countries. Upon consolidation, the Company evaluates the differences in accounting principles and determines whether adjustments are necessary to convert the foreign financial statements to the accounting principles upon which the consolidated financial statements are based. All intercompany transactions have been eliminated.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">On the Consolidated Statements of Operations of this Annual Report on Form <em style="font: inherit;">10</em>-K, the presentation of interest income has been updated for <em style="font: inherit;">2021</em> to conform to the current year's presentation. The amount for interest income was previously presented with interest expense under the caption Interest expense, net on the Consolidated Statements of Operations.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="ftek:COVID19PandemicPolicyTextBlock" id="c94232736" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>COVID-<em style="font: inherit;">19</em> Pandemic and Geopolitical Events</b></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The effects of the coronavirus (COVID-<em style="font: inherit;">19</em>) global pandemic have presented&#xa0;significant risks to the Company that have had direct and indirect impacts on our results of operations&#xa0;during the <em style="font: inherit;">twelve</em> months ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>.&#xa0;Although the impact of the pandemic is difficult to isolate and quantify, the Company has experienced, and <em style="font: inherit;"> may </em>continue to experience, supply chain issues, travel restrictions, and reductions in demand for certain of products&#xa0;due to the delay or abandonment of ongoing or anticipated projects&#xa0;due to our customers', suppliers' and other <em style="font: inherit;">third</em> parties' financial distress or concern regarding the volatility of global markets.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Geopolitical events and global economic sanctions resulting from the ongoing conflict between Russia and Ukraine <em style="font: inherit;"> may </em>impact new or existing projects and the prices and availability of raw materials, energy and other materials. These events <em style="font: inherit;"> may </em>also impact energy and regulatory policy nationally or regionally for the impacted regions. In addition, we have experienced and are experiencing varying levels of inflation resulting in part from increased shipping and transportation costs, raw material costs, and labor costs.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Management cannot&#xa0;predict the full impact of the COVID-<em style="font: inherit;">19</em> pandemic and geopolitical events on the Company's sales and marketing channels and supply chains, and, as a result, the ultimate extent of the effects on the Company are highly uncertain and will depend on future developments. Such effects could exist for an extended period of time. The Company continues to monitor the potential impacts on the business.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="ftek:PrivatePlacementOfferingPolicyTextBlock" id="c94232737" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Private Placement Offering</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> February 11, 2021, </em>Fuel Tech entered into a securities purchase agreement (the &#x201c;Purchase Agreement&#x201d;) with certain institutional investors pursuant to which the Company agreed to issue and sell, in a private placement (the &#x201c;Private Placement&#x201d;), (i) <ix:nonFraction id="c94230262" contextRef="d_2021-02-11_2021-02-11_SubsidiarySaleOfStockAxis-PrivatePlacementMember" unitRef="Share" name="us-gaap:StockIssuedDuringPeriodSharesNewIssues" scale="0" format="ixt:numdotdecimal" decimals="INF">5,000,000</ix:nonFraction> shares (the &#x201c;Shares&#x201d;) of common stock, (ii) and <ix:nonFraction id="c94230264" contextRef="d_2021-02-11_2021-02-11_ClassOfWarrantOrRightAxis-WarrantsIssuedInConnectionWithPrivatePlacementMember_SubsidiarySaleOfStockAxis-PrivatePlacementMember" unitRef="Share" name="ftek:ClassOfWarrantOrRightNumberOfWarrantsIssued" scale="0" format="ixt:numdotdecimal" decimals="INF">2,500,000</ix:nonFraction> warrants (the &#x201c;Warrants&#x201d;) exercisable for a total of <ix:nonFraction id="c94230267" contextRef="i_2021-02-11_ClassOfWarrantOrRightAxis-WarrantsIssuedInConnectionWithPrivatePlacementMember_SubsidiarySaleOfStockAxis-PrivatePlacementMember" unitRef="Share" name="us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" scale="0" format="ixt:numdotdecimal" decimals="INF">2,500,000</ix:nonFraction> shares of common stock (the &#x201c;Warrant Shares&#x201d;) with an exercise price of $<ix:nonFraction id="c94230269" contextRef="i_2021-02-11_ClassOfWarrantOrRightAxis-WarrantsIssuedInConnectionWithPrivatePlacementMember_SubsidiarySaleOfStockAxis-PrivatePlacementMember" unitRef="USDPerShare" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" format="ixt:numdotdecimal" decimals="INF">5.10</ix:nonFraction> per Warrant Share, at a purchase price of $<ix:nonFraction id="c94230271" contextRef="i_2021-02-11_SubsidiarySaleOfStockAxis-PrivatePlacementMember" unitRef="USDPerShare" name="us-gaap:SharesIssuedPricePerShare" scale="0" format="ixt:numdotdecimal" decimals="INF">5.1625</ix:nonFraction> per Share and associated warrant. The gross proceeds to the Company from the Private Placement were $<ix:nonFraction id="c94230273" contextRef="d_2021-02-11_2021-02-11_SubsidiarySaleOfStockAxis-PrivatePlacementMember" unitRef="USD" name="us-gaap:ProceedsFromIssuanceOfPrivatePlacement" scale="3" format="ixt:numdotdecimal" decimals="-3">25,812</ix:nonFraction>, before deducting placement agent fees and offering expenses of $<ix:nonFraction id="c94230275" contextRef="d_2021-02-11_2021-02-11" unitRef="USD" name="us-gaap:PaymentsOfStockIssuanceCosts" scale="3" format="ixt:numdotdecimal" decimals="-3">1,783</ix:nonFraction>. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the <span style="-sec-ix-hidden:c94230277">five</span>&#xa0;and <em style="font: inherit;">one</em>-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale. In addition, the Company issued to the placement agent Warrants to purchase up to <ix:nonFraction id="c94230281" contextRef="i_2021-02-11_ClassOfWarrantOrRightAxis-ThePlacementAgentWarrantsMember" unitRef="Share" name="us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" scale="0" format="ixt:numdotdecimal" decimals="INF">350,000</ix:nonFraction> shares of common stock.&#xa0; The Placement Agent Warrants are exercisable at an exercise price of $<ix:nonFraction id="c94230283" contextRef="i_2021-02-11_ClassOfWarrantOrRightAxis-ThePlacementAgentWarrantsMember" unitRef="USDPerShare" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" format="ixt:numdotdecimal" decimals="INF">6.45</ix:nonFraction> per share of common stock and expire on the <span style="-sec-ix-hidden:c94230285">five</span>&#xa0;and <em style="font: inherit;">one</em>-half year anniversary of the effective date of the registration statement registering the Shares and Warrant Shares for resale.&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="ftek:LiquidityPolicyPolicyTextBlock" id="c94232738" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Liquidity</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We&#xa0;have experienced&#xa0;net losses in recent years.&#xa0;We continue to monitor our liquidity needs and have taken measures to reduce expenses and restructure operations, which we feel are necessary to ensure we maintain sufficient working capital and liquidity to operate the business and invest in our future. As a result, we have evaluated our ongoing business needs, and considered the cash requirements of our APC&#xa0;and FUEL CHEM businesses. This evaluation included consideration of the following: a) customer and revenue trends in our APC and FUEL CHEM business segments, b) current operating structure and expenditure levels, c) current availability of working capital, and d) support for our research and development initiatives.&#xa0;We believe our current cash position and net cash flows expected to be generated from operations are adequate to fund planned operations of the Company for the next <em style="font: inherit;">12</em> months.&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:UseOfEstimates" id="c94232739" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Use of Estimates</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The preparation of the financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The Company uses estimates in accounting for, among other items, revenue recognition, allowance for doubtful accounts, income tax provisions, excess and obsolete inventory reserve, impairment of long-lived assets, and warranty expenses. Actual results could differ from those estimates.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
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       <em style="font: inherit;">27</em>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:FairValueMeasurementPolicyPolicyTextBlock" id="c94232740" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Fair Value Measurements</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The carrying values of cash and cash equivalents, accounts receivable, and accounts payable are reasonable estimates of their fair value due to their short-term nature.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We apply authoritative accounting guidance for fair value measurements of financial and non-financial assets and liabilities. This guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis and clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the standard establishes a <em style="font: inherit;">three</em>-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
    <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:64pt;">&#xa0;</td><td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#x2022;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">Level <em style="font: inherit;">1</em> &#x2013; Observable inputs to the valuation methodology such as quoted prices in active markets for identical assets or liabilities</p> </td></tr>
</tbody></table> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
    <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:64pt;">&#xa0;</td><td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#x2022;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">Level <em style="font: inherit;">2</em> &#x2013; Inputs to the valuation methodology including quoted prices for similar assets or liabilities in active markets, quoted prices for identical assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability, and inputs that are derived principally from or corroborated by observable market data by correlation or other means</p> </td></tr>
</tbody></table> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
    <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:64pt;">&#xa0;</td><td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#x2022;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">Level <em style="font: inherit;">3</em> &#x2013; Significant unobservable inputs in which there is little or <em style="font: inherit;">no</em> market data, which require the reporting entity to develop its own estimates and assumptions or those expected to be used by market participants. Generally, these fair value measures are model-based valuation techniques such as discounted cash flows, option pricing models, and other commonly used valuation techniques</p> </td></tr>
</tbody></table> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Transfers between levels of the fair value hierarchy are recognized based on the actual date of the event or change in circumstances that caused the transfer. We had <em style="font: inherit;">no</em> assets or liabilities that were valued using level <em style="font: inherit;">2</em> or level <em style="font: inherit;">3</em> inputs and therefore there were <em style="font: inherit;">no</em> transfers between levels of the fair value hierarchy during the periods ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" id="c94232741" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Cash, cash equivalents and restricted cash</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We consider all highly liquid debt investments with original maturities from the date of purchase of <em style="font: inherit;">three</em> months or less as cash equivalents. Cash equivalents include investments in money market funds. At <em style="font: inherit;"> December 31, 2022</em>, we had cash on hand of approximately $<ix:nonFraction id="c94230303" contextRef="i_2022-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:Cash" scale="3" format="ixt:numdotdecimal" decimals="-3">675</ix:nonFraction>&#xa0;at our Beijing, China subsidiary that is subject to certain local regulations that <em style="font: inherit;"> may </em>limit the immediate availability of these funds outside of China. Cash on hand at our Italy subsidiary totaled approximately $<ix:nonFraction id="c94230304" contextRef="i_2022-12-31_StatementGeographicalAxis-IT" unitRef="USD" name="us-gaap:Cash" scale="3" format="ixt:numdotdecimal" decimals="-5">300</ix:nonFraction>&#xa0;at <em style="font: inherit;"> December 31, 2022</em>. Cash on hand at our Chilean subsidiary totaled approximately $<ix:nonFraction id="c94230305" contextRef="i_2022-12-31_StatementGeographicalAxis-CL" unitRef="USD" name="us-gaap:Cash" scale="3" format="ixt:numdotdecimal" decimals="-3">225</ix:nonFraction>&#xa0;at <em style="font: inherit;"> December 31, 2022</em>.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Restricted cash as of <em style="font: inherit;"> December 31, 2021 </em>represents funds that are restricted to satisfy any amount borrowed against the Company's Cash Collateral Security agreement with BMO Harris Bank N.A (Cash Collateral Security agreement). In <em style="font: inherit;"> June 2022, </em>the Company replaced the former Cash Collateral Security agreement with an Investment Collateral Security agreement with BMO Harris Bank N.A (Investment Collateral Security agreement) where&#xa0;existing standby letters of credit are collateralized by amounts held in the Company's investment funds (see Note <em style="font: inherit;">11</em>).&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheet that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows:</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
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     <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">December 31, 2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">December 31, 2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt">Cash</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230454" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:Cash" scale="3" format="ixt:numdotdecimal" decimals="-4">12,560</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230455" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:Cash" scale="3" format="ixt:numdotdecimal" decimals="-3">35,893</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Cash equivalents</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230456" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:CashEquivalentsAtCarryingValue" scale="3" format="ixt:numdotdecimal" decimals="-3">10,768</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230457" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:CashEquivalentsAtCarryingValue" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Restricted cash included in current assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230458" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230459" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:RestrictedCashAndCashEquivalentsAtCarryingValue" scale="3" format="ixt:numdotdecimal" decimals="-3">891</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Restricted cash included in long-term assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230460" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:RestrictedCashAndCashEquivalentsNoncurrent" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230461" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:RestrictedCashAndCashEquivalentsNoncurrent" scale="3" format="ixt:numdotdecimal" decimals="-4">270</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230462" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" scale="3" format="ixt:numdotdecimal" decimals="-3">23,328</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230463" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" scale="3" format="ixt:numdotdecimal" decimals="-3">37,054</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
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     <p style="margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</p>
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    <p style="margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"></p>
    <p style="margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"></b></p>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:InvestmentPolicyTextBlock" id="c94232742" escape="true">
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     <p style="margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">Investments</b></p>
    </div> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">In <em style="font: inherit;"> June 2022, </em>the Board of Directors approved a plan to invest up to $<ix:nonFraction id="c94230307" contextRef="i_2022-06-30" unitRef="USD" name="ftek:InvestmentPlanMaximumAmountApproved" scale="3" format="ixt:numdotdecimal" decimals="-7">10,000</ix:nonFraction>&#xa0;of excess capital&#xa0;in debt securities, or held in money market funds until such investments can be made, with BMO Harris Bank N.A (BMO Harris). In <em style="font: inherit;"> December 2022, </em>the Board of Directors approved an additional transfer of $<ix:nonFraction id="c94230308" contextRef="i_2022-12-31" unitRef="USD" name="ftek:InvestmentPlanMaximumAdditionalAmountApproved" scale="3" format="ixt:numdotdecimal" decimals="-7">10,000</ix:nonFraction>&#xa0;of excess capital into the investment account. The funds deposited in <em style="font: inherit;"> December 2022 </em>have <em style="font: inherit;">not</em> been invested in debt securities as of <em style="font: inherit;"> December 31, 2022 </em>and are included in cash equivalents. A portion of the funds invested are restricted as collateral under the Investment Collateral Security agreement (see Note <em style="font: inherit;">11</em>).&#xa0;At <em style="font: inherit;"> December 31, 2022</em>, the amount of funds collateralized under the Investment Collateral Security agreeme<span style="background-color:#ffffff;">nt&#xa0;is </span>$<ix:nonFraction id="c94230311" contextRef="i_2022-12-31_PledgedStatusAxis-AssetPledgedAsCollateralMember_PledgingPurposeAxis-LetterOfCreditMember" unitRef="USD" name="us-gaap:RestrictedCashAndInvestments" scale="3" format="ixt:numdotdecimal" decimals="-3">1,034</ix:nonFraction><span style="background-color:#ffffff;">&#xa0;relating to existing standby letters of credit with varying maturity dates and expire <em style="font: inherit;">no</em> later than <em style="font: inherit;"> December 31, 2024.</em></span></p> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">Our investments in debt securities consist of United&#xa0;States (US) Treasury securities, including Notes, Bonds, and Bills, and US Government Agency securities, which&#xa0;are designated as held-to-maturity (HTM) and stated at amortized cost. The Company has the positive intent and ability to hold these investments to maturity and does&#xa0;<em style="font: inherit;">not</em> expect&#xa0;to sell any debt securities before maturity to settle an obligation under the Investment Collateral Security agreement. The maturities of our HTM investments range from <span style="-sec-ix-hidden:c94230314">three</span> to <span style="-sec-ix-hidden:c94230315">thirty-six</span> months. HTM debt investments with original maturities of approximately <em style="font: inherit;">three</em> months or less from the date of purchase are classified within cash and cash equivalents. HTM debt investments with original maturities at the date of purchase greater than approximately <em style="font: inherit;">three</em> months and remaining maturities of less than <em style="font: inherit;">one</em> year are classified as short-term investments. HTM debt investments with remaining maturities beyond <em style="font: inherit;">one</em> year are classified as long-term investments. Interest income, including amortization of premium and accretion of discount, are included on the Consolidated Statements of Operations in Interest income under the effective yield method. Accrued interest is included in Prepaid expenses and other current assets on the Consolidated Balance Sheets.&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">The following table provides the amortized cost, gross unrealized gains and losses, and fair value of our HTM debt securities at <em style="font: inherit;"> December 31, 2022</em>:</p> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">&#xa0;</p>
    <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:HeldToMaturitySecuritiesTextBlock" id="c2302378" escape="true">
     <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 85%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Held-to-maturity debt securities:</p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Amortized cost</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230465" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">9,341</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Gross unrecognized gains</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"><ix:nonFraction id="c94230466" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Gross unrecognized losses</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230467" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">168</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Fair value</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230468" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:HeldToMaturitySecuritiesFairValue" scale="3" format="ixt:numdotdecimal" decimals="-3">9,173</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#xa0;</td></tr>
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    </ix:nonNumeric> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">Our investments in debt securities consist of United States (US) Treasury securities, including Notes, Bonds, and Bills, and US Government Agency securities. Due to the creditworthiness of the entities issuing these securities, there is <em style="font: inherit;">no</em> impairment recorded related to the unrealized losses.</p> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">The following table provides the amortized cost and fair value of debt securities by maturities at <em style="font: inherit;"> December 31, 2022</em>:</p> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
    <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock" id="c2302379" escape="true">
     <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Amortized Cost</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Fair Value</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Within one year</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230471" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" scale="3" format="ixt:numdotdecimal" decimals="-3">2,981</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230472" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" scale="3" format="ixt:numdotdecimal" decimals="-3">2,957</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">After one year through two years</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230473" contextRef="i_2022-12-31" unitRef="USD" name="ftek:DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo" scale="3" format="ixt:numdotdecimal" decimals="-3">4,919</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230474" contextRef="i_2022-12-31" unitRef="USD" name="ftek:DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo" scale="3" format="ixt:numdotdecimal" decimals="-3">4,807</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">After two years through three years</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230475" contextRef="i_2022-12-31" unitRef="USD" name="ftek:DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree" scale="3" format="ixt:numdotdecimal" decimals="-3">1,441</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230476" contextRef="i_2022-12-31" unitRef="USD" name="ftek:DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree" scale="3" format="ixt:numdotdecimal" decimals="-3">1,409</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Total</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230477" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">9,341</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230478" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:HeldToMaturitySecuritiesFairValue" scale="3" format="ixt:numdotdecimal" decimals="-3">9,173</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
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    </ix:nonNumeric> <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p></ix:nonNumeric>
   <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b></b></p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="ftek:ForeignCurrencyRiskManagementPolicyTextBlock" id="c94232743" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Foreign Currency Risk Management</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our earnings and cash flows are subject to fluctuations due to changes in foreign currency exchange rates. We do <em style="font: inherit;">not</em> enter into foreign currency forward contracts or into foreign currency option contracts to manage this risk due to the nature of the transactions involved.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b></b></p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:TradeAndOtherAccountsReceivablePolicy" id="c94232744" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Accounts Receivable</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Accounts receivable consist of amounts due to us in the normal course of our business, are <em style="font: inherit;">not</em> collateralized, and normally do <em style="font: inherit;">not</em> bear interest. Accounts receivable includes contract assets, billings occurring subsequent to revenue recognition under Accounting Standards Codification (ASC) <em style="font: inherit;">606</em> <i>Revenue from Contracts with Customers</i>. At <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, unbilled receivables were approximately $<ix:nonFraction id="c94230325" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:UnbilledContractsReceivable" scale="3" format="ixt:numdotdecimal" decimals="-3">3,082</ix:nonFraction> and $<ix:nonFraction id="c94230326" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:UnbilledContractsReceivable" scale="3" format="ixt:numdotdecimal" decimals="-3">1,277</ix:nonFraction>, respectively. Refer to Note <em style="font: inherit;">2</em> for further detail.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>&#xa0;</b></p></ix:nonNumeric>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b></b></p>
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       <em style="font: inherit;">28</em>
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       <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy" id="c94232745" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Allowance for Doubtful Accounts</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The allowance for doubtful accounts is our management's best estimate of the amount of credit losses in accounts receivable. In order to control and monitor the credit risk associated with our customer base, we review the credit worthiness of customers on a recurring basis. Factors influencing the level of scrutiny include the level of business the customer has with Fuel Tech, the customer&#x2019;s payment history, and the customer&#x2019;s financial stability. At the end of each reporting period, the allowance for doubtful accounts balance is reviewed relative to management&#x2019;s collectability assessment and is adjusted if deemed necessary.&#xa0; Bad debt write-offs are made when management believes it is probable a receivable will <em style="font: inherit;">not</em> be recovered. The table below sets forth the components of the Allowance for Doubtful Accounts for the years ended <em style="font: inherit;"> December&#xa0;</em><em style="font: inherit;">31.</em></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
    <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock" id="c2302380" escape="true">
     <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Year</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Balance at January 1</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Provision charged to expense</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Write-offs / Recoveries</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Balance at December 31</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">2021</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230483" contextRef="i_2020-12-31" unitRef="USD" name="us-gaap:AllowanceForDoubtfulAccountsReceivable" scale="3" format="ixt:numdotdecimal" decimals="-3">835</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230484" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="ftek:ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange" scale="3" format="ixt:numdotdecimal" decimals="-3">227</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230485" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="ftek:AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries" scale="3" format="ixt:numdotdecimal" decimals="-3">839</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230486" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AllowanceForDoubtfulAccountsReceivable" scale="3" format="ixt:numdotdecimal" decimals="-3">223</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2022</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230487" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AllowanceForDoubtfulAccountsReceivable" scale="3" format="ixt:numdotdecimal" decimals="-3">223</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230488" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="ftek:ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">19</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230489" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="ftek:AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries" scale="3" format="ixt:numdotdecimal" decimals="-3">94</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230490" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AllowanceForDoubtfulAccountsReceivable" scale="3" format="ixt:numdotdecimal" decimals="-4">110</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
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    </ix:nonNumeric> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p></ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b></b></p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="ftek:PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock" id="c94232746" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Prepaid expenses and other current assets</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Prepaid expenses and other current assets include&#xa0;Chinese banker acceptances of $<ix:nonFraction id="c94230331" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DueFromCustomerAcceptances" scale="3" format="ixt:numdotdecimal" decimals="-3">0</ix:nonFraction>&#xa0;and $<ix:nonFraction id="c94230332" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DueFromCustomerAcceptances" scale="3" format="ixt:numdotdecimal" decimals="-3">55</ix:nonFraction>&#xa0;as of <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, respectively. These are short-term commitments of typically <em style="font: inherit;">three</em> to <em style="font: inherit;">six</em> months&#xa0;for future payments and can be redeemed at a discount or applied to future vendor payments.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b></b></p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:InventoryPolicyTextBlock" id="c94232747" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Inventories</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Inventories consist primarily of equipment constructed for resale&#xa0;and spare parts and are stated at the lower of cost or net realizable value, using the weighted-average cost method. At <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, inventory included equipment constructed for resale of$<ix:nonFraction id="c94230337" contextRef="i_2022-12-31_PublicUtilitiesInventoryAxis-EquipmentContstructedForResaleMember" unitRef="USD" name="us-gaap:InventoryNet" scale="3" format="ixt:numdotdecimal" decimals="-3">207</ix:nonFraction><span style="background-color:#ffffff;">&#xa0;and </span>$<ix:nonFraction id="c94230338" contextRef="i_2021-12-31_PublicUtilitiesInventoryAxis-EquipmentContstructedForResaleMember" unitRef="USD" name="us-gaap:InventoryNet" scale="3" format="ixt:numdotdecimal" decimals="-3">227</ix:nonFraction><span style="background-color:#ffffff;">, respectively, and spare parts, net of reserves of </span>$<ix:nonFraction id="c94230339" contextRef="i_2022-12-31_PublicUtilitiesInventoryAxis-SparePartsMember" unitRef="USD" name="us-gaap:InventoryNet" scale="3" format="ixt:numdotdecimal" decimals="-3">185</ix:nonFraction><span style="background-color:#ffffff;">&#xa0;and </span>$<ix:nonFraction id="c94230340" contextRef="i_2021-12-31_PublicUtilitiesInventoryAxis-SparePartsMember" unitRef="USD" name="us-gaap:InventoryNet" scale="3" format="ixt:numdotdecimal" decimals="-3">121</ix:nonFraction><span style="background-color:#ffffff;">, respectively.</span> Usage is recorded in cost of sales in the period that parts were issued to a project or used to service equipment.&#xa0;Equipment constructed for resale that is&#xa0;in process&#xa0;is recorded in Other assets. In process equipment for inventory recorded as other assets was $<ix:nonFraction id="c94230341" contextRef="i_2022-12-31_PublicUtilitiesInventoryAxis-InProcessEquipmentMember" unitRef="USD" name="us-gaap:InventoryNet" scale="3" format="ixt:numdotdecimal" decimals="-3">634</ix:nonFraction> and $<ix:nonFraction id="c94230342" contextRef="i_2021-12-31_PublicUtilitiesInventoryAxis-InProcessEquipmentMember" unitRef="USD" name="us-gaap:InventoryNet" scale="3" format="ixt:numdotdecimal" decimals="-3">627</ix:nonFraction>&#xa0;as of <em style="font: inherit;"> December 31, 2022 </em>and <em style="font: inherit;">2021</em> respectively.&#xa0;&#xa0;&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Inventories are periodically evaluated to identify obsolete or otherwise impaired parts and are written off when management determines usage is <em style="font: inherit;">not</em> probable. The Company estimates the balance of excess and obsolete inventory by analyzing inventory by age using last used and original purchase date and existing sales pipeline for which the inventory could be used.&#xa0;The table below sets forth the components of the Excess and Obsolete Inventory Reserve for the years ended <em style="font: inherit;"> December 31.</em></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
    <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="ftek:ScheduleOfExcessAndObsoleteInventoryReserveTableTextBlock" id="c2302381" escape="true">
     <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Year</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Balance at January 1</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Provision charged to expense</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Write-offs / Recoveries</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Balance at December 31</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2021</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230495" contextRef="i_2020-12-31" unitRef="USD" name="us-gaap:InventoryValuationReserves" scale="3" format="ixt:numdotdecimal" decimals="-3">907</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230496" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="ftek:InventoryValuationReserveProvision" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230497" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:InventoryWriteDown" scale="3" format="ixt:numdotdecimal" decimals="-4">20</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230498" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:InventoryValuationReserves" scale="3" format="ixt:numdotdecimal" decimals="-3">927</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2022</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230499" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:InventoryValuationReserves" scale="3" format="ixt:numdotdecimal" decimals="-3">927</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230500" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="ftek:InventoryValuationReserveProvision" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230501" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:InventoryWriteDown" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230502" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:InventoryValuationReserves" scale="3" format="ixt:numdotdecimal" decimals="-3">927</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
    </ix:nonNumeric> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b></b></p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" id="c94232748" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Foreign Currency Translation and Transactions</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Assets and liabilities of consolidated foreign subsidiaries are translated into U.S. dollars at exchange rates in effect at year end. Revenues and expenses are translated at average exchange rates prevailing during the year. Gains or losses on foreign currency transactions and the related tax effects are reflected in net income. The resulting translation adjustments are included in stockholders&#x2019; equity as part of accumulated other comprehensive loss.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>&#xa0;</b></p></ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b></b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b></b></p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="ftek:AccumulatedOtherComprehensiveIncomeLossPolicyPolicyTextBlock" id="c94232749" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Accumulated Other Comprehensive Loss</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
    <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" id="c2302382" escape="true">
     <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;"><em style="font: inherit;">December 31,</em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Foreign currency translation</b></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#xa0;</b></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#xa0;</b></td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Balance at beginning of period</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230508" contextRef="i_2021-12-31_StatementEquityComponentsAxis-AccumulatedTranslationAdjustmentMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,604</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230509" contextRef="i_2020-12-31_StatementEquityComponentsAxis-AccumulatedTranslationAdjustmentMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-4" sign="-">1,370</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Other comprehensive loss:</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Foreign currency translation adjustments (1)</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230511" contextRef="d_2022-01-01_2022-12-31_StatementEquityComponentsAxis-AccumulatedTranslationAdjustmentMember" unitRef="USD" name="us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">124</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230512" contextRef="d_2021-01-01_2021-12-31_StatementEquityComponentsAxis-AccumulatedTranslationAdjustmentMember" unitRef="USD" name="us-gaap:OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">234</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Balance at end of period</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230513" contextRef="i_2022-12-31_StatementEquityComponentsAxis-AccumulatedTranslationAdjustmentMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,728</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230514" contextRef="i_2021-12-31_StatementEquityComponentsAxis-AccumulatedTranslationAdjustmentMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,604</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Total accumulated other comprehensive loss</b></p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230515" contextRef="i_2022-12-31_StatementEquityComponentsAxis-AccumulatedTranslationAdjustmentMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,728</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230516" contextRef="i_2021-12-31_StatementEquityComponentsAxis-AccumulatedTranslationAdjustmentMember" unitRef="USD" name="us-gaap:StockholdersEquity" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,604</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td></tr>
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    </ix:nonNumeric> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
    <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:36pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">(<em style="font: inherit;">1</em>)</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">In all periods presented, there were <em style="font: inherit;">no</em> tax impacts related to functional currency translation adjustments.</p> </td></tr>
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       <em style="font: inherit;">29</em>
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       <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ResearchAndDevelopmentExpensePolicy" id="c94232750" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Research and Development</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Research and development costs are expensed as incurred. Research and development projects funded by customer contracts are reported as part of cost of goods sold. Internally funded research and development expenses are reported as operating expenses.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:StandardProductWarrantyPolicy" id="c94232751" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Product/System Warranty</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We typically warrant our air pollution control products and systems against defects in design, materials and workmanship for <span style="-sec-ix-hidden:c94230348">one</span> to <span style="-sec-ix-hidden:c94230349">two</span> years. A provision for estimated future costs relating to warranty expense is recorded when the products/systems become commercially operational.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:GoodwillAndIntangibleAssetsPolicyTextBlock" id="c94232752" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Goodwill</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Goodwill is evaluated for impairment at the reporting unit level, which is defined as an operating segment or <em style="font: inherit;">one</em> level below an operating segment. Goodwill of our reporting units is assigned upon acquisition after considering the nature of the net assets giving rise to the goodwill and how each reporting unit would enjoy the benefits and synergies of the net assets acquired. We have <span style="-sec-ix-hidden:c94230351">two</span> reporting units for goodwill evaluation purposes: the FUEL CHEM technology segment and the APC technology reporting unit. There is <em style="font: inherit;">no</em> goodwill associated with our APC&#xa0;technology reporting unit. The entire goodwill balance of $<ix:nonFraction id="c94230353" contextRef="i_2022-12-31_StatementBusinessSegmentsAxis-FuelChemTechnologySegmentMember" unitRef="USD" name="us-gaap:Goodwill" scale="3" format="ixt:numdotdecimal" decimals="-3">2,116</ix:nonFraction>&#xa0;was allocated to the FUEL CHEM technology reporting unit&#xa0;as of <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Goodwill is tested for impairment at least annually as of the <em style="font: inherit;">first</em> day of our <em style="font: inherit;">fourth</em> quarter, or more frequently if events or changes in circumstances indicate that the carrying value <em style="font: inherit;"> may </em><em style="font: inherit;">not</em> be recoverable. Our evaluation of goodwill impairment involves <em style="font: inherit;">first</em> assessing qualitative factors to determine whether it is more likely than <em style="font: inherit;">not</em> that the fair value of a reporting unit is less than its carrying amount. We <em style="font: inherit;"> may </em>bypass this qualitative assessment, or determine that based on our qualitative assessment considering the totality of events and circumstances including macroeconomic factors, industry and market considerations, current and projected financial performance, a sustained decrease in our share price, or other factors, that additional impairment analysis is necessary. This additional analysis involves comparing the current fair value of our reporting units to their carrying values. We use a discounted cash flow (DCF) model to determine the current fair value of our FUEL CHEM&#xa0;reporting unit. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, costs to produce and working capital changes. Management considers historical experience and all available information at the time the fair values of its reporting units are estimated. However, actual fair values that could be realized in an actual transaction <em style="font: inherit;"> may </em>differ from those used to evaluate the impairment of goodwill. Fuel Tech performed its annual goodwill impairment analysis as of <em style="font: inherit;"> October 1, </em><em style="font: inherit;">2022</em>&#xa0;and determined that <em style="font: inherit;">no</em> impairment of goodwill existed. The Company did <span style="-sec-ix-hidden:c94230363"><span style="-sec-ix-hidden:c94230364">not</span></span> recognize a charge for goodwill impairment for the periods ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and&#xa0;<em style="font: inherit;">2021</em>.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Other Intangible Assets</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Management reviews other finite-lived intangible assets, patent assets, trade names,&#xa0;and lease assets for impairment when events or changes in circumstances indicate the carrying amount of an asset or asset group <em style="font: inherit;"> may </em><em style="font: inherit;">not</em> be recoverable. In the event that impairment indicators exist, a further analysis is performed and if the sum of the expected undiscounted future cash flows resulting from the use of the asset or asset group is less than the carrying amount of the asset or asset group, an impairment loss equal to the excess of the asset or asset group's carrying value over its fair value is recorded. Management considers historical experience and all available information at the time the estimates of future cash flows are made, however, the actual cash values that could be realized <em style="font: inherit;"> may </em>differ from those that are estimated.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
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        <em style="font: inherit;">30</em>
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        <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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    </ix:exclude> <ix:exclude>&#xa0;</ix:exclude> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">During the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and <em style="font: inherit;">2021</em>, Fuel Tech recorded <em style="font: inherit;">no</em> patent or trademark abandonment charges.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Third-party costs related to the development of patents are included within other intangible assets on the consolidated balance sheets. The <em style="font: inherit;">third</em>-party costs capitalized as patent costs during the years ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em> were $<ix:nonFraction id="c94230372" contextRef="i_2022-12-31_NatureOfExpenseAxis-CapitalizedThirdpartyCostsMember" unitRef="USD" name="us-gaap:FiniteLivedPatentsGross" scale="3" format="ixt:numdotdecimal" decimals="-3">37</ix:nonFraction>&#xa0;and $<ix:nonFraction id="c94230373" contextRef="i_2021-12-31_NatureOfExpenseAxis-CapitalizedThirdpartyCostsMember" unitRef="USD" name="us-gaap:FiniteLivedPatentsGross" scale="3" format="ixt:numdotdecimal" decimals="-3">52</ix:nonFraction>, respectively. Third-party costs are comprised of legal fees that relate to the review and preparation of patent disclosures and filing fees incurred to present the patents to the required governing body.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our intellectual property portfolio has been a significant building block for the APC and FUEL CHEM technology segments. The patents are essential to the generation of revenue for our businesses and are essential to protect us from competition in the markets in which we serve. These costs are being amortized on the straight-line method over the period beginning with the patent issuance date and ending on the patent expiration date. Patent maintenance fees are charged to operations as incurred.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Amortization expense from continuing operations for intangible assets was $<ix:nonFraction id="c94230374" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:AmortizationOfIntangibleAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">88</ix:nonFraction>&#xa0;and $<ix:nonFraction id="c94230375" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:AmortizationOfIntangibleAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">157</ix:nonFraction>&#xa0;for the years ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, respectively. The table below shows the amortization period and other intangible asset cost by intangible asset as of <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, and the accumulated amortization and net intangible asset value in total for all other intangible assets.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
    <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" id="c2302383" escape="true">
     <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="10" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;"><em style="font: inherit;"><em style="font: inherit;">2022</em></em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="10" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;"><em style="font: inherit;"><em style="font: inherit;">2021</em></em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 30%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Description of Other Intangibles</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Amortization Period (years)</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Gross Carrying Amount</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Accumulated Amortization</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Net Carrying Amount</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Gross Carrying Amount</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Accumulated Amortization</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Net Carrying Amount</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Patent assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_FiniteLivedIntangibleAssetsByMajorClassAxis-PatentsMember_RangeAxis-MinimumMember" name="us-gaap:FiniteLivedIntangibleAssetUsefulLife" id="c94230535" format="ixt-sec:duryear">1</ix:nonNumeric> - <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_FiniteLivedIntangibleAssetsByMajorClassAxis-PatentsMember_RangeAxis-MaximumMember" name="us-gaap:FiniteLivedIntangibleAssetUsefulLife" id="c94230537" format="ixt-sec:duryear">20</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230538" contextRef="i_2022-12-31_FiniteLivedIntangibleAssetsByMajorClassAxis-PatentsMember" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsGross" scale="3" format="ixt:numdotdecimal" decimals="-3">803</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230539" contextRef="i_2022-12-31_FiniteLivedIntangibleAssetsByMajorClassAxis-PatentsMember" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization" scale="3" format="ixt:numdotdecimal" decimals="-3">406</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230540" contextRef="i_2022-12-31_FiniteLivedIntangibleAssetsByMajorClassAxis-PatentsMember" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsNet" scale="3" format="ixt:numdotdecimal" decimals="-3">397</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230541" contextRef="i_2021-12-31_FiniteLivedIntangibleAssetsByMajorClassAxis-PatentsMember" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsGross" scale="3" format="ixt:numdotdecimal" decimals="-3">789</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230542" contextRef="i_2021-12-31_FiniteLivedIntangibleAssetsByMajorClassAxis-PatentsMember" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization" scale="3" format="ixt:numdotdecimal" decimals="-3">341</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230543" contextRef="i_2021-12-31_FiniteLivedIntangibleAssetsByMajorClassAxis-PatentsMember" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsNet" scale="3" format="ixt:numdotdecimal" decimals="-3">448</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Total</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230547" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsGross" scale="3" format="ixt:numdotdecimal" decimals="-3">803</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230548" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization" scale="3" format="ixt:numdotdecimal" decimals="-3">406</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230549" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsNet" scale="3" format="ixt:numdotdecimal" decimals="-3">397</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230550" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsGross" scale="3" format="ixt:numdotdecimal" decimals="-3">789</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230551" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization" scale="3" format="ixt:numdotdecimal" decimals="-3">341</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230552" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsNet" scale="3" format="ixt:numdotdecimal" decimals="-3">448</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
    </ix:nonNumeric> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The table below shows the estimated future amortization expense for intangible assets:</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
    <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" id="c2302384" escape="true">
     <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 85%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Year</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Estimated Amortization Expense</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2023</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230554" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" scale="3" format="ixt:numdotdecimal" decimals="-4">60</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2024</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230555" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" scale="3" format="ixt:numdotdecimal" decimals="-3">52</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2025</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230556" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" scale="3" format="ixt:numdotdecimal" decimals="-3">31</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2026</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230557" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" scale="3" format="ixt:numdotdecimal" decimals="-3">31</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2027</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230558" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" scale="3" format="ixt:numdotdecimal" decimals="-3">31</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Thereafter</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230559" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" scale="3" format="ixt:numdotdecimal" decimals="-3">192</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230560" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:FiniteLivedIntangibleAssetsNet" scale="3" format="ixt:numdotdecimal" decimals="-3">397</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
    </ix:nonNumeric> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p></ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b></b></p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:PropertyPlantAndEquipmentPolicyTextBlock" id="c94232753" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Property and Equipment</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Property and equipment is stated at historical cost and does <em style="font: inherit;">not</em> include capital in process expenditures yet to be capitalized. Provisions for depreciation are computed by the straight-line method, using estimated useful lives that range based on the nature of the asset. Leasehold improvements are depreciated over the shorter of the associated lease term or the estimated useful life of the asset. Depreciation expense&#xa0;was $<ix:nonFraction id="c94230379" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:Depreciation" scale="3" format="ixt:numdotdecimal" decimals="-3">352</ix:nonFraction>&#xa0;and $<ix:nonFraction id="c94230380" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:Depreciation" scale="3" format="ixt:numdotdecimal" decimals="-3">584</ix:nonFraction>&#xa0;for the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and <em style="font: inherit;">2021</em>, respectively. The table below shows the depreciable life and cost by asset class as of <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, and the accumulated depreciation and net book value in total for all classes of assets.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
    <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:PropertyPlantAndEquipmentTextBlock" id="c2302385" escape="true">
     <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 55%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Description of Property and Equipment</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Depreciable Life (years)</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Land</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230569" contextRef="i_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-LandMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-4">1,050</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230570" contextRef="i_2021-12-31_PropertyPlantAndEquipmentByTypeAxis-LandMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-4">1,050</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Building</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-BuildingMember" name="us-gaap:PropertyPlantAndEquipmentUsefulLife" id="c94230572" format="ixt-sec:duryear">39</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230574" contextRef="i_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-BuildingMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-4">3,950</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230575" contextRef="i_2021-12-31_PropertyPlantAndEquipmentByTypeAxis-BuildingMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-4">3,950</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Building and leasehold improvements</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-BuildingAndLeaseholdImprovementsMember_RangeAxis-MinimumMember" name="us-gaap:PropertyPlantAndEquipmentUsefulLife" id="c94230576" format="ixt-sec:duryear">3</ix:nonNumeric> - <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-BuildingAndLeaseholdImprovementsMember_RangeAxis-MaximumMember" name="us-gaap:PropertyPlantAndEquipmentUsefulLife" id="c94230578" format="ixt-sec:duryear">39</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230579" contextRef="i_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-BuildingAndLeaseholdImprovementsMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">2,626</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230580" contextRef="i_2021-12-31_PropertyPlantAndEquipmentByTypeAxis-BuildingAndLeaseholdImprovementsMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">2,626</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Field equipment</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-FieldEquipmentMember_RangeAxis-MinimumMember" name="us-gaap:PropertyPlantAndEquipmentUsefulLife" id="c94230581" format="ixt-sec:duryear">3</ix:nonNumeric> - <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-FieldEquipmentMember_RangeAxis-MaximumMember" name="us-gaap:PropertyPlantAndEquipmentUsefulLife" id="c94230583" format="ixt-sec:duryear">4</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230584" contextRef="i_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-FieldEquipmentMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">11,882</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230585" contextRef="i_2021-12-31_PropertyPlantAndEquipmentByTypeAxis-FieldEquipmentMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">11,787</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Computer equipment and software</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-ComputerEquipmentAndSoftwareMember_RangeAxis-MinimumMember" name="us-gaap:PropertyPlantAndEquipmentUsefulLife" id="c94230586" format="ixt-sec:duryear">2</ix:nonNumeric> - <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-ComputerEquipmentAndSoftwareMember_RangeAxis-MaximumMember" name="us-gaap:PropertyPlantAndEquipmentUsefulLife" id="c94230588" format="ixt-sec:duryear">3</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230589" contextRef="i_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-ComputerEquipmentAndSoftwareMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">2,117</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230590" contextRef="i_2021-12-31_PropertyPlantAndEquipmentByTypeAxis-ComputerEquipmentAndSoftwareMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">2,099</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Furniture and fixtures</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-FurnitureAndFixturesMember_RangeAxis-MinimumMember" name="us-gaap:PropertyPlantAndEquipmentUsefulLife" id="c94230591" format="ixt-sec:duryear">3</ix:nonNumeric> - <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-FurnitureAndFixturesMember_RangeAxis-MaximumMember" name="us-gaap:PropertyPlantAndEquipmentUsefulLife" id="c94230593" format="ixt-sec:duryear">10</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230594" contextRef="i_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-FurnitureAndFixturesMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">1,306</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230595" contextRef="i_2021-12-31_PropertyPlantAndEquipmentByTypeAxis-FurnitureAndFixturesMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">1,308</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Vehicles</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-VehiclesMember" name="us-gaap:PropertyPlantAndEquipmentUsefulLife" id="c94230597" format="ixt-sec:duryear">5</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230599" contextRef="i_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-VehiclesMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">32</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230600" contextRef="i_2021-12-31_PropertyPlantAndEquipmentByTypeAxis-VehiclesMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">32</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Construction in process</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230604" contextRef="i_2022-12-31_PropertyPlantAndEquipmentByTypeAxis-ConstructionInProgressMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">29</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230605" contextRef="i_2021-12-31_PropertyPlantAndEquipmentByTypeAxis-ConstructionInProgressMember" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total cost</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230609" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">22,992</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230610" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentGross" scale="3" format="ixt:numdotdecimal" decimals="-3">22,852</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Less accumulated depreciation</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230614" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" scale="3" format="ixt:numdotdecimal" decimals="-3">18,557</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230615" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" scale="3" format="ixt:numdotdecimal" decimals="-3">18,243</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total net book value</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230619" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentNet" scale="3" format="ixt:numdotdecimal" decimals="-3">4,435</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230620" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:PropertyPlantAndEquipmentNet" scale="3" format="ixt:numdotdecimal" decimals="-3">4,609</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
    </ix:nonNumeric> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Property and equipment is reviewed for impairment when events and circumstances indicate that the carrying amount of the assets (or asset group) <em style="font: inherit;"> may </em><em style="font: inherit;">not</em> be recoverable. If impairment indicators exist, we perform a more detailed analysis and an impairment loss is recognized when estimated future undiscounted cash flows expected to result from the use of the asset (or asset group) and its eventual disposition are less than the carrying amount. This process of analyzing impairment involves examining the operating condition of individual assets (or asset group) and estimating a fair value based upon current condition, relevant market factors and remaining estimated operational life compared to the asset&#x2019;s remaining depreciable life. Quoted market prices and other valuation techniques are used to determine expected cash flows.&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:RevenueRecognitionPolicyTextBlock" id="c94232754" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Revenue Recognition</b></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>&#xa0;</i></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is <em style="font: inherit;">not</em> separately identifiable from other promises in the contracts and, therefore, <em style="font: inherit;">not</em> distinct. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales, value add, and other taxes we collect concurrent with revenue-producing&#xa0;activities&#xa0;are&#xa0;excluded&#xa0;from&#xa0;revenue.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Air Pollution Control Technology</i></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech&#x2019;s APC contracts are typically <span style="-sec-ix-hidden:c94230387">six</span> to <span style="-sec-ix-hidden:c94230388">eighteen</span> months in length. A typical contract will have <em style="font: inherit;">three</em> or <em style="font: inherit;">four</em> critical operational measurements that, when achieved, serve as the basis for us to invoice the customer via progress billings. At a minimum, these measurements will include the generation of engineering drawings, the shipment of equipment and the completion of a system performance test.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">As part of most of its contractual APC project agreements, Fuel Tech will agree to customer-specific acceptance criteria that relate to the operational performance of the system that is being sold. These criteria are determined based on modeling that is performed by Fuel Tech personnel, which is based on operational inputs that are provided by the customer. The customer will warrant that these operational inputs are accurate as they are specified in the binding contractual agreement. Further, the customer is solely responsible for the accuracy of the operating condition information; typically all performance guarantees and equipment warranties granted by us are voidable if the operating condition information is inaccurate or is <em style="font: inherit;">not</em> met.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Since control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation. Fuel Tech uses the cost-to-cost input measure of progress for our contracts since it best depicts the transfer of assets to the customer which occurs as we incur costs on our contracts. Under the cost-to-cost input measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred. Costs to fulfill include all internal and external engineering costs, equipment charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product-line related, as appropriate (e.g. test equipment depreciation and certain insurance expenses).</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Fuel&#xa0;Tech&#x2019;s&#xa0;APC&#xa0;product&#xa0;line&#xa0;also&#xa0;includes&#xa0;ancillary&#xa0;revenue&#xa0;for&#xa0;post&#xa0;contractual&#xa0;goods&#xa0;and&#xa0;services.&#xa0;Revenue&#xa0;associated&#xa0;with&#xa0;these&#xa0;activities&#xa0;are&#xa0;recognized&#xa0;at&#xa0;point&#xa0;in&#xa0;time&#xa0;when delivery&#xa0;of&#xa0;goods&#xa0;or&#xa0;completion&#xa0;of&#xa0;the&#xa0;service&#xa0;obligation&#xa0;is&#xa0;performed.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech has installed over <ix:nonFraction id="c94230392" contextRef="i_2022-12-31" unitRef="Pure" name="ftek:NumberOfUnitsWithApcTechnology" scale="0" format="ixt:numdotdecimal" decimals="INF">1,200</ix:nonFraction> units with APC technology and normally provides performance guarantees to our customers based on the operating conditions for the project. As part of the project implementation process, we perform system start-up and optimization services that effectively serve as a test of actual project performance. We believe that this test, combined with the accuracy of the modeling that is performed, enables revenue to be recognized prior to the receipt of formal customer acceptance.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>FUEL CHEM</i></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>&#xa0;</i></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Revenues from the sale of chemical products are recognized when control transfers to customer upon shipment or delivery of the product based on the applicable shipping terms. We generally recognize revenue for these arrangements at a point in time based on our evaluation of when the customer obtains control of the promised goods or services.&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On occasion, Fuel Tech will engineer and sell its chemical pumping equipment.&#xa0; These projects are similar in nature to the APC projects described above and for those projects where control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation.&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">For projects containing multiple performance obligations, the Company allocates the transaction price based on the estimated standalone selling price. The Company must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. The Company utilizes key assumptions to determine the stand-alone selling price, which <em style="font: inherit;"> may </em>include other comparable transactions, pricing considered in negotiating the transaction and the estimated costs. Variable consideration is allocated specifically to <em style="font: inherit;">one</em> or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated are consistent with the amounts the Company would expect to receive for the satisfaction of each performance obligation.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The consideration allocated to each performance obligation is recognized as revenue when control is transferred for the related goods or services. For performance obligations which consist of licenses and other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The Company receives payments from its customers based on billing schedules established in each contract. Up-front payments and fees are recorded as deferred revenue upon receipt or when due until the Company performs its obligations under these arrangements. Amounts are recorded as accounts receivable when the Company&#x2019;s right to consideration is unconditional.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p><ix:exclude><p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>&#xa0;</i></p></ix:exclude><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i></i></p>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:CostOfSalesPolicyTextBlock" id="c94232755" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Cost of Sales</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Cost of sales includes all internal and external engineering costs, equipment and chemical charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product line-related, as appropriate (e.g., test equipment depreciation and certain insurance expenses). Certain depreciation and amortization expenses related to tangible and intangible assets, respectively, are allocated to cost of sales. We classify shipping and handling costs in cost of sales in the consolidated statements of operations.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:SellingGeneralAndAdministrativeExpensesPolicyTextBlock" id="c94232756" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Selling, General and Administrative Expenses</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Selling, general and administrative expenses primarily include the following categories except where an allocation to the cost of sales line item is warranted due to the project- or product-line nature of a portion of the expense category: salaries and wages, employee benefits, non-project travel, insurance, legal, rent, accounting and auditing, recruiting, telephony, employee training, Board of Directors&#x2019; fees, auto rental, office supplies, dues and subscriptions, utilities, real estate taxes, commissions and bonuses, marketing materials, postage and business taxes. Departments comprising the selling, general and administrative line item primarily include the functions of executive management, finance and accounting, investor relations, regulatory affairs, marketing, business development, information technology, human resources, sales, legal and general administration.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:IncomeTaxPolicyTextBlock" id="c94232757" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Income Taxes</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, the provision for income taxes represents income taxes paid or payable (or received or receivable) for the current year plus the change in deferred taxes during the year. Deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid, and result from differences between the financial and tax bases of our assets and liabilities and are adjusted for changes in tax rates and tax laws when enacted. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than <em style="font: inherit;">not</em> that a tax benefit will <em style="font: inherit;">not</em> be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and our experience with similar operations. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are <em style="font: inherit;">not</em> long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which <em style="font: inherit;">no</em> valuation allowance is recorded <em style="font: inherit;"> may </em><em style="font: inherit;">not</em> be realized upon changes in facts and circumstances.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Tax benefits related to uncertain tax positions taken or expected to be taken on a tax return are recorded when such benefits meet a more likely than <em style="font: inherit;">not</em> threshold. Otherwise, these tax benefits are recorded when a tax position has been effectively settled, which means that the statute of limitation has expired or the appropriate taxing authority has completed their examination even though the statute of limitations remains open. Interest and penalties related to uncertain tax positions are recognized as part of the provision for income taxes and are accrued beginning in the period that such interest and penalties would be applicable under relevant tax law until such time that the related tax benefits are recognized.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>&#xa0;</b></p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:LesseeLeasesPolicyTextBlock" id="c94232758" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Leases</b></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The Company applies the provisions of ASC&#xa0;<em style="font: inherit;">842,</em> Leases. The Company&#xa0;determines if an arrangement is a lease at inception by evaluating whether the arrangement conveys the right to use an identified asset and whether the Company obtains substantially all of the economic benefits from and has the ability to direct the use of the asset.&#xa0;Right-of-use&#xa0;(ROU)&#xa0;assets&#xa0;and&#xa0;lease&#xa0;liabilities&#xa0;are&#xa0;recognized&#xa0;at&#xa0;the&#xa0;lease&#xa0;commencement&#xa0;date&#xa0;based&#xa0;on&#xa0;the&#xa0;present&#xa0;value&#xa0;of&#xa0;the&#xa0;future&#xa0;minimum&#xa0;lease&#xa0;payments&#xa0;over the&#xa0;lease&#xa0;term.&#xa0;Operating&#xa0;ROU&#xa0;assets&#xa0;also&#xa0;include&#xa0;the&#xa0;impact&#xa0;of&#xa0;any&#xa0;lease&#xa0;incentives. Operating leases are included in right-of-use&#xa0;operating lease assets, operating lease liabilities - current, and operating lease liabilities - non-current on our Consolidated Balance Sheets.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of our leases do <em style="font: inherit;">not</em> provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. Our lease terms <em style="font: inherit;"> may </em>include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We have lease agreements with lease and non-lease components, and&#xa0;we elected the practical expedient to <em style="font: inherit;">not</em> separate lease and non-lease components for the majority of our leases. For certain equipment leases, such as vehicles, we account for the lease and non-lease components as a single lease component. We also elected the practical expedient for leases with an initial term of <em style="font: inherit;">12</em> months or less.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ShareBasedCompensationOptionAndIncentivePlansPolicy" id="c94232759" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Stock-Based Compensation</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our stock-based employee compensation plan, referred to as the Fuel Tech, Inc. <em style="font: inherit;">2014</em> Long-Term Incentive Plan (Incentive Plan), was adopted in <em style="font: inherit;"> May 2014 </em>and allows for awards to be granted to participants in the form of non-qualified stock options, incentive stock options, stock appreciation rights, restricted stock, restricted stock units, performance awards, and bonuses or other forms of share-based or non-share-based awards or combinations thereof. Participants in the Incentive Plan <em style="font: inherit;"> may </em>be our directors, officers, employees, consultants or advisors (except consultants or advisors in capital-raising transactions) as the directors determine are key to the success of our business. There are a maximum of <ix:nonFraction id="c94230407" contextRef="i_2022-12-31_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" scale="0" format="ixt:numdotdecimal" decimals="INF">5,600,676</ix:nonFraction>&#xa0;shares that <em style="font: inherit;"> may </em>be issued or reserved for awards to participants under the Incentive Plan as of <em style="font: inherit;"> December 31, 2022</em>. Based on the existing issued or reserved awards in Incentive Plan, there are <ix:nonFraction id="c94230408" contextRef="i_2022-12-31_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" scale="0" format="ixt:numdotdecimal" decimals="INF">1,899,250</ix:nonFraction>&#xa0;shares available to be used for future awards to participants in the Incentive Plan as of <em style="font: inherit;"> December 31, 2022</em>.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p></ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b></b></p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy" id="c94232760" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Defined Contribution Plan</b></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">We have a retirement savings plan available for all our U.S. employees who have met minimum length-of-service requirements. Our contributions are determined based upon amounts contributed by the employees with additional contributions made at the discretion of the Board of Directors. Costs related to this plan were </span>$<ix:nonFraction id="c94230409" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:DefinedContributionPlanCostRecognized" scale="3" format="ixt:numdotdecimal" decimals="-5">200</ix:nonFraction><span style="background-color:#ffffff;">&#xa0;and&#xa0;</span>$<ix:nonFraction id="c94230410" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:DefinedContributionPlanCostRecognized" scale="3" format="ixt:numdotdecimal" decimals="-3">206</ix:nonFraction><span style="background-color:#ffffff;">&#xa0;in </span><em style="font: inherit;">2022</em><span style="background-color:#ffffff;">&#xa0;and&#xa0;</span><em style="font: inherit;">2021</em><span style="background-color:#ffffff;">, respectively.</span></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b></b></p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:EarningsPerSharePolicyTextBlock" id="c94232761" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Basic and Diluted Earnings per Common Share</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">Basic earnings per share excludes the antidilutive effects of stock options, restricted stock units (RSUs), warrants, and the <em style="font: inherit;">nil</em> coupon non-redeemable convertible unsecured loan notes (see Note <em style="font: inherit;">6</em>). Diluted earnings per share includes the dilutive effect of the <em style="font: inherit;">nil</em> coupon non-redeemable convertible unsecured loan notes, RSUs, warrants, and unexercised in-the-money stock options, except in periods of net loss where the effect of these instruments is antidilutive. Out-of-the-money stock options and warrants are excluded from diluted earnings per share because they are unlikely to be exercised and would be anti-dilutive if they were exercised. At </span><em style="font: inherit;"> December 31, 2022</em><span style="background-color:#ffffff;">&#xa0;and </span><em style="font: inherit;">2021</em><span style="background-color:#ffffff;">, we had weighted-average outstanding equity awards of </span><ix:nonFraction id="c94230417" contextRef="i_2022-12-31_AwardTypeAxis-AntidilutiveMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">763,800</ix:nonFraction><span style="background-color:#ffffff;">&#xa0;and </span><ix:nonFraction id="c94230418" contextRef="i_2021-12-31_AwardTypeAxis-AntidilutiveMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">214,500</ix:nonFraction><span style="background-color:#ffffff;">, respectively, and </span><ix:nonFraction id="c94230419" contextRef="i_2022-12-31_AwardTypeAxis-AntidilutiveMember" unitRef="Share" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">2,850,000</ix:nonFraction><span style="background-color:#ffffff;">&#xa0;warrants in both periods, which were antidilutive for the purpose of calculation of&#xa0;the diluted earnings per share. As of </span><em style="font: inherit;"> December 31, 2022</em><span style="background-color:#ffffff;">,&#xa0;</span><ix:nonFraction id="c94230420" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" scale="0" format="ixt:numdotdecimal" decimals="INF">42,600</ix:nonFraction><span style="background-color:#ffffff;">&#xa0;incremental equity awards were antidilutive because of the net loss in the year then ended. These equity awards could potentially dilute basic EPS in future years.</span></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The table below sets forth the weighted-average shares used at <em style="font: inherit;"> December&#xa0;</em><em style="font: inherit;">31</em> in calculating earnings (loss) per share:</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
    <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" id="c2302386" escape="true">
     <table class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Basic weighted-average shares</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230623" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:WeightedAverageNumberOfSharesOutstandingBasic" scale="0" format="ixt:numdotdecimal" decimals="INF">30,289,000</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230624" contextRef="d_2021-01-01_2021-12-31" unitRef="Share" name="us-gaap:WeightedAverageNumberOfSharesOutstandingBasic" scale="0" format="ixt:numdotdecimal" decimals="INF">29,585,000</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Conversion of unsecured loan notes</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"><ix:nonFraction id="c94230625" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:IncrementalCommonSharesAttributableToConversionOfDebtSecurities" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"><ix:nonFraction id="c94230626" contextRef="d_2021-01-01_2021-12-31" unitRef="Share" name="us-gaap:IncrementalCommonSharesAttributableToConversionOfDebtSecurities" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Unexercised options and unvested restricted stock units</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"><ix:nonFraction id="c94230627" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"><ix:nonFraction id="c94230628" contextRef="d_2021-01-01_2021-12-31" unitRef="Share" name="us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" scale="0" format="ixt:numdotdecimal" decimals="INF">109,000</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Diluted weighted-average shares</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230629" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">30,289,000</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230630" contextRef="d_2021-01-01_2021-12-31" unitRef="Share" name="us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">29,694,000</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
    </ix:nonNumeric> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p></ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"></p>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ConcentrationRiskCreditRisk" id="c94232762" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Risk Concentrations</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Financial instruments that potentially subject the Company to a significant concentration of credit risk consist primarily of cash and cash equivalents and accounts receivable. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. However, management believes the Company is <em style="font: inherit;">not</em> exposed to significant credit risk due to the financial position of its primary depository institution where a significant portion of its deposits are held.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">For the year ended <em style="font: inherit;"> December 31, 2022</em>, <span style="background-color:#ffffff;">we had <ix:nonFraction id="c94230423" contextRef="d_2022-01-01_2022-12-31_ConcentrationRiskByBenchmarkAxis-SalesRevenueNetMember_ConcentrationRiskByTypeAxis-CustomerConcentrationRiskMember_MajorCustomersAxis-ThreeCustomersMember" unitRef="Pure" name="ftek:NumberOfMajorCustomers" scale="0" format="ixt-sec:numwordsen" decimals="INF">three</ix:nonFraction> customers which individually represented greater than <em style="font: inherit;">10%</em> of revenues. Two customers primarily contributed revenues to the FUEL CHEM technology segment and <ix:nonFraction id="c94230425" contextRef="d_2022-01-01_2022-12-31_ConcentrationRiskByBenchmarkAxis-SalesRevenueNetMember_ConcentrationRiskByTypeAxis-CustomerConcentrationRiskMember_MajorCustomersAxis-OneCustomerMember_StatementBusinessSegmentsAxis-APCTechnologyMember" unitRef="Pure" name="ftek:NumberOfMajorCustomers" scale="0" format="ixt-sec:numwordsen" decimals="INF">one</ix:nonFraction> contributed revenue&#xa0;to the APC technology segment. In total these <em style="font: inherit;">three</em> customers represented <ix:nonFraction id="c94230427" contextRef="d_2022-01-01_2022-12-31_ConcentrationRiskByBenchmarkAxis-SalesRevenueNetMember_ConcentrationRiskByTypeAxis-CustomerConcentrationRiskMember_MajorCustomersAxis-ThreeCustomersMember" unitRef="Pure" name="us-gaap:ConcentrationRiskPercentage1" scale="-2" format="ixt:numdotdecimal" decimals="2">48</ix:nonFraction>% of consolidated revenues. We had <em style="font: inherit;">no</em> customer&#xa0;that accounted for greater than <em style="font: inherit;">10%</em> of our current assets as of </span><em style="font: inherit;"> December 31, 2022</em><span style="background-color:#ffffff;">.</span></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">For the year ended <em style="font: inherit;"> December 31, 2021</em>, we had <ix:nonFraction id="c94230430" contextRef="d_2021-01-01_2021-12-31_ConcentrationRiskByBenchmarkAxis-SalesRevenueNetMember_ConcentrationRiskByTypeAxis-CustomerConcentrationRiskMember_MajorCustomersAxis-FourCustomersMember" unitRef="Pure" name="ftek:NumberOfMajorCustomers" scale="0" format="ixt-sec:numwordsen" decimals="INF">four</ix:nonFraction> customers which individually represented greater than <em style="font: inherit;">10%</em> of revenues. Three customers primarily contributed revenues to the FUEL CHEM technology segment and <ix:nonFraction id="c94230432" contextRef="d_2021-01-01_2021-12-31_ConcentrationRiskByBenchmarkAxis-SalesRevenueNetMember_ConcentrationRiskByTypeAxis-CustomerConcentrationRiskMember_MajorCustomersAxis-OneCustomerMember_StatementBusinessSegmentsAxis-APCTechnologyMember" unitRef="Pure" name="ftek:NumberOfMajorCustomers" scale="0" format="ixt-sec:numwordsen" decimals="INF">one</ix:nonFraction> contributed revenue&#xa0;to the APC technology segment. In total these <em style="font: inherit;">four</em> customers represented <ix:nonFraction id="c94230434" contextRef="d_2021-01-01_2021-12-31_ConcentrationRiskByBenchmarkAxis-SalesRevenueNetMember_ConcentrationRiskByTypeAxis-CustomerConcentrationRiskMember_MajorCustomersAxis-FourCustomersMember" unitRef="Pure" name="us-gaap:ConcentrationRiskPercentage1" scale="-2" format="ixt:numdotdecimal" decimals="1">60</ix:nonFraction>% of consolidated revenues. We had <em style="font: inherit;">no</em> customer&#xa0;that accounted for greater than <em style="font: inherit;">10%</em> of our current assets as of <em style="font: inherit;"> December 31, 2021</em>.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We control credit risk through requiring milestone payments on long-term contracts, performing ongoing credit evaluations of its customers, and in some cases obtaining security for payment through bank guarantees and letters of credit.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p></ix:nonNumeric>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"></p>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:StockholdersEquityPolicyTextBlock" id="c94232763" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Treasury Stock</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We use the cost method to account for common stock repurchases. During the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and&#xa0;<em style="font: inherit;">2021</em>, we withheld <ix:nonFraction id="c94230438" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:TreasuryStockSharesAcquired" scale="0" format="ixt:numdotdecimal" decimals="INF">12,497</ix:nonFraction>&#xa0;and&#xa0;<ix:nonFraction id="c94230439" contextRef="d_2021-01-01_2021-12-31" unitRef="Share" name="us-gaap:TreasuryStockSharesAcquired" scale="0" format="ixt:numdotdecimal" decimals="INF">15,162</ix:nonFraction>&#xa0;shares of our common stock, valued at approximately $<ix:nonFraction id="c94230440" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:TreasuryStockValueAcquiredCostMethod" scale="3" format="ixt:numdotdecimal" decimals="-3">17</ix:nonFraction>&#xa0;and&#xa0;$<ix:nonFraction id="c94230441" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:TreasuryStockValueAcquiredCostMethod" scale="3" format="ixt:numdotdecimal" decimals="-3">52</ix:nonFraction>, respectively, to settle personal tax withholding obligations that arose as a result of restricted stock units that vested. Refer to Note <em style="font: inherit;">5,</em> &#x201c;Treasury Stock,&#x201d; for further discussion.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>&#xa0;</b></p></ix:nonNumeric>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:NewAccountingPronouncementsPolicyPolicyTextBlock" id="c94232764" escape="true"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Recently Issued Accounting Pronouncements</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">In <em style="font: inherit;"> June 2016, </em>the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) <em style="font: inherit;">2016</em>-<em style="font: inherit;">13,</em>&#xa0;Financial Instruments - Credit Losses (Topic <em style="font: inherit;">326</em>): Measurement of Credit Losses on Financial Instruments, and in <em style="font: inherit;"> November 2019, </em>the FASB issued ASU <em style="font: inherit;">2019</em>-<em style="font: inherit;">10,</em> Financial Instruments - Credit Losses (Topic <em style="font: inherit;">326</em>), Derivatives and Hedging (Topic <em style="font: inherit;">815</em>), and Leases (Topic <em style="font: inherit;">842</em>).&#xa0;This guidance amends the current accounting guidance and requires the measurement of all expected losses based on historical experience, current conditions and reasonable and supportable forecasts. For trade receivables, loans, and other financial instruments, we will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. The standard will become effective for interim and annual periods beginning on <em style="font: inherit;"> January 1, 2023 </em>for Fuel Tech. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. The Company is finalizing the impact of adoption, but we do <em style="font: inherit;">not</em> believe the adoption of this standard will have a material impact on our financial statements. Beginning on <em style="font: inherit;"> January 1, 2023, </em>Fuel Tech will use the caption Allowance for Credit Losses and our expected credit loss model to calculate the allowance.</p></ix:nonNumeric>
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">2.</em>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;REVENUE RECOGNITION</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Disaggregated Revenue by Product Technology</i></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents our revenues disaggregated by product technology:</p>
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    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">Twelve Months Ended December 31,</em></em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Air Pollution Control</b></p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Technology solutions</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230666" contextRef="d_2022-01-01_2022-12-31_ProductOrServiceAxis-TechnologySolutionsMember_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">7,935</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230667" contextRef="d_2021-01-01_2021-12-31_ProductOrServiceAxis-TechnologySolutionsMember_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">4,189</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Spare parts</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230668" contextRef="d_2022-01-01_2022-12-31_ProductOrServiceAxis-SparePartsMember_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">911</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230669" contextRef="d_2021-01-01_2021-12-31_ProductOrServiceAxis-SparePartsMember_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">1,138</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Ancillary revenue</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230670" contextRef="d_2022-01-01_2022-12-31_ProductOrServiceAxis-AncillaryRevenueMember_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">1,751</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230671" contextRef="d_2021-01-01_2021-12-31_ProductOrServiceAxis-AncillaryRevenueMember_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">1,569</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Total Air Pollution Control technology</b></p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230672" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">10,597</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230673" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">6,896</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>FUEL CHEM</b></p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">FUEL CHEM technology solutions</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230675" contextRef="d_2022-01-01_2022-12-31_ProductOrServiceAxis-TechnologySolutionsMember_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">16,344</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230676" contextRef="d_2021-01-01_2021-12-31_ProductOrServiceAxis-TechnologySolutionsMember_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">17,365</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Total Revenues</b></p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230677" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">26,941</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230678" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">24,261</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Disaggregated Revenue by Geography</i></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents our revenues disaggregated by geography, based on the location of the end-user:</p>
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    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">Twelve Months Ended December 31,</em></em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">United States</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230683" contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-US" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">20,311</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230684" contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-US" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">19,515</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Foreign Revenues</b></p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;"><b>&#xa0;</b></td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Americas</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230686" contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-AmericasMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">213</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230687" contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-AmericasMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">356</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Europe</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230688" contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-EuropeMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">2,888</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230689" contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-EuropeMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">1,894</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Asia</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230690" contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-AsiaMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">3,529</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230691" contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-AsiaMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">2,496</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Total Foreign Revenues</b></p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230692" contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-NonUsMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-4">6,630</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230693" contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-NonUsMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">4,746</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Total Revenues</b></p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230694" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">26,941</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230695" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">24,261</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><i>Timing of Revenue Recognition</i></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents the timing of our revenue recognition:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock" id="c2302390" escape="true">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">Twelve Months Ended December 31,</em></em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Products transferred at a point in time</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230700" contextRef="d_2022-01-01_2022-12-31_TimingOfTransferOfGoodOrServiceAxis-TransferredAtPointInTimeMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">18,849</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230701" contextRef="d_2021-01-01_2021-12-31_TimingOfTransferOfGoodOrServiceAxis-TransferredAtPointInTimeMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">20,072</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Products and services transferred over time</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230702" contextRef="d_2022-01-01_2022-12-31_TimingOfTransferOfGoodOrServiceAxis-TransferredOverTimeMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">8,092</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230703" contextRef="d_2021-01-01_2021-12-31_TimingOfTransferOfGoodOrServiceAxis-TransferredOverTimeMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">4,189</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Total Revenues</b></p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230704" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">26,941</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230705" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">24,261</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Contract Balances</i></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the Consolidated Balance Sheets. In our APC technology segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. For the FUEL&#xa0;CHEM technology segment, deliveries made in the current period but billed in subsequent periods are also considered contract assets.&#xa0;These assets are reported on the Consolidated Balance Sheet on a contract-by-contract basis at the end of each reporting period. At <em style="font: inherit;"> December 31, 2022</em>,&#xa0;<em style="font: inherit;">2021</em>, and <em style="font: inherit;">2020</em>&#xa0;contract assets for APC technology projects were&#xa0;approximately $<ix:nonFraction id="c94230634" contextRef="i_2022-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:ContractWithCustomerAssetNet" scale="3" format="ixt:numdotdecimal" decimals="-3">3,082</ix:nonFraction>, $<ix:nonFraction id="c94230635" contextRef="i_2021-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:ContractWithCustomerAssetNet" scale="3" format="ixt:numdotdecimal" decimals="-3">1,277</ix:nonFraction>,&#xa0;and $<ix:nonFraction id="c94230636" contextRef="i_2020-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:ContractWithCustomerAssetNet" scale="3" format="ixt:numdotdecimal" decimals="-3">2,079</ix:nonFraction>, respectively, and at <em style="font: inherit;"> December 31, 2020, </em>contract assets for the FUEL CHEM technology segment were approximately $<ix:nonFraction id="c94230637" contextRef="i_2020-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:ContractWithCustomerAssetNet" scale="3" format="ixt:numdotdecimal" decimals="-3">269</ix:nonFraction>, and are included in accounts receivable on the consolidated balance sheets. There were <ix:nonFraction id="c94230638" contextRef="i_2021-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:ContractWithCustomerAssetNet" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> contract assets for the FUEL CHEM technology segment as of&#xa0;<em style="font: inherit;"> December 31, 2022</em>&#xa0;and&#xa0;<em style="font: inherit;">2021</em>.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">However, the Company will periodically bill in advance of costs incurred before revenue is recognized, resulting in contract liabilities. These liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. Contract liabilities were $<ix:nonFraction id="c94230641" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:ContractWithCustomerLiabilityCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">372</ix:nonFraction>,&#xa0;$<ix:nonFraction id="c94230642" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:ContractWithCustomerLiabilityCurrent" scale="3" format="ixt:numdotdecimal" decimals="-4">390</ix:nonFraction>, and $<ix:nonFraction id="c94230643" contextRef="i_2020-12-31" unitRef="USD" name="us-gaap:ContractWithCustomerLiabilityCurrent" scale="3" format="ixt:numdotdecimal" decimals="-4">850</ix:nonFraction> at <em style="font: inherit;"> December 31, 2022</em>,&#xa0;<em style="font: inherit;">2021</em>, and <em style="font: inherit;">2020</em>, respectively, and are included in other accrued liabilities on the consolidated balance sheets.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Changes in the contract asset and liability balances during the year ended&#xa0;<em style="font: inherit;"> December 31, 2022</em>, were <em style="font: inherit;">not</em> materially impacted by any other items other than amounts billed and revenue recognized as described previously. Revenue recognized that was included in the contract liability balance at the beginning of the period was $<ix:nonFraction id="c94230647" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ContractWithCustomerLiabilityRevenueRecognized" scale="3" format="ixt:numdotdecimal" decimals="-3">384</ix:nonFraction>&#xa0;and $<ix:nonFraction id="c94230648" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ContractWithCustomerLiabilityRevenueRecognized" scale="3" format="ixt:numdotdecimal" decimals="-3">776</ix:nonFraction>&#xa0;for the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and <em style="font: inherit;">2021</em>, respectively, which represented primarily revenue from progress toward completion of our APC technology contracts.&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">As of <em style="font: inherit;"> December 31, 2022</em>&#xa0;and <em style="font: inherit;">2021</em>&#xa0;we had <ix:nonFraction id="c94230651" contextRef="i_2022-12-31" unitRef="Pure" name="ftek:ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction>&#xa0;construction contracts in progress that were identified as a loss contract.&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Remaining Performance Obligations</i></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Remaining performance obligations, represents the transaction price of APC technology booked orders for which work has <em style="font: inherit;">not</em> been performed. As of <em style="font: inherit;"> December 31, 2022</em>, the aggregate amount of the transaction price allocated to remaining performance obligations was $<ix:nonFraction id="c94230654" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:RevenueRemainingPerformanceObligation" scale="3" format="ixt:numdotdecimal" decimals="-3">8,245</ix:nonFraction>. The Company expects to recognize revenue on approximately $<ix:nonFraction id="c94230655" contextRef="i_2022-12-31_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis-RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis.domain-2023-01-01" unitRef="USD" name="us-gaap:RevenueRemainingPerformanceObligation" scale="3" format="ixt:numdotdecimal" decimals="-3">7,926</ix:nonFraction>&#xa0;of the remaining performance obligations over the next <ix:nonNumeric contextRef="i_2022-12-31_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis-RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis.domain-2023-01-01" name="us-gaap:RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1" id="c94230656" format="ixt-sec:durmonth">12</ix:nonNumeric> months with the remaining recognized thereafter.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><i>Practical Expedients and Exemptions</i></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We generally expense sales commissions on a ratable basis when incurred because the amortization period would have been <em style="font: inherit;">one</em> year or less. These costs are recorded within selling, general and administrative expenses within the Consolidated Statements of Operations. A practical expedient was elected to <em style="font: inherit;">not</em> recognize shipping and handling costs as a separate performance obligation under ASC <em style="font: inherit;">606.</em></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>&#xa0;</i></p>
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       <em style="font: inherit;">35</em>
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       <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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   <ix:exclude>&#xa0;</ix:exclude>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Accounts Receivable</i></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>&#xa0;</i></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">The components of accounts receivable are as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
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    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;"><em style="font: inherit;">As of</em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">December 31, 2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">December 31, 2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Trade receivables</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230710" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AccountsReceivableGrossCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">4,605</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230711" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AccountsReceivableGrossCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">2,122</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Unbilled receivables</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230712" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:UnbilledReceivablesCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">3,082</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230713" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:UnbilledReceivablesCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">1,277</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Other short-term receivables</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230714" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AccountsAndOtherReceivablesNetCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">152</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230715" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AccountsAndOtherReceivablesNetCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">83</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Allowance for doubtful accounts</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230716" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AllowanceForDoubtfulAccountsReceivable" scale="3" format="ixt:numdotdecimal" decimals="-4">110</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230717" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AllowanceForDoubtfulAccountsReceivable" scale="3" format="ixt:numdotdecimal" decimals="-3">223</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total accounts receivable</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230718" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:AccountsReceivableNetCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">7,729</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230719" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:AccountsReceivableNetCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">3,259</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>&#xa0;&#xa0;</b></p>
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    &#xa0;
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">3.</em>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;<span style="background-color:#ffffff;">INCOME TAXES</span></b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"><b>&#xa0;</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Within the calculation of the Company&#x2019;s annual effective tax rate, the Company has used assumptions and estimates that <em style="font: inherit;"> may </em>change as a result of future guidance, interpretation, and rule-making from the Internal Revenue Service, the SEC, and the FASB and/or various other taxing jurisdictions.&#xa0; For example, the Company anticipates that the state jurisdictions will continue to determine and announce their conformity to the U.S. Tax Act which could have an impact on the annual effective tax rate.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> March 27, 2020 </em>the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) was enacted which enacted the following relief among others;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:39pt;">&#xa0;</td><td style="width:10pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">&#x25cf;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">Amended federal tax laws to permit <em style="font: inherit;">100%</em> bonus depreciation for eligible qualified improvement property placed in service by the taxpayer after <em style="font: inherit;"> December 31, 2017 </em>and before <em style="font: inherit;"> January 1, 2023.</em></p> </td></tr>
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   <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:39pt;">&#xa0;</td><td style="width:10pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">&#x25cf;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">Eliminated the <em style="font: inherit;">80%</em> of taxable income limitations by allowing corporate entities to fully utilize Net Operating Losses (NOL) carryforwards to offset taxable income in <em style="font: inherit;">2018,</em> <em style="font: inherit;">2019</em> or <em style="font: inherit;">2020.</em> The <em style="font: inherit;">80%</em> limitation is reinstated for tax years after <em style="font: inherit;">2020.</em></p> </td></tr>
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   <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:39pt;">&#xa0;</td><td style="width:10pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">&#x25cf;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">Increased the net interest expense deduction limit to <em style="font: inherit;">50%</em> of adjusted taxable income from <em style="font: inherit;">30%</em> for tax years beginning <em style="font: inherit;"> January 1, 2019 </em>and <em style="font: inherit;">2020.</em></p> </td></tr>
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   <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:39pt;">&#xa0;</td><td style="width:10pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">&#x25cf;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">Allowed taxpayers with alternative minimum tax credits to claim a refund in <em style="font: inherit;">2020</em> for the entire amount of the credit instead of recovering the credit through refunds over a period of years, as originally enacted by the Tax Cuts and Jobs Act in <em style="font: inherit;">2017.</em></p> </td></tr>
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   <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:39pt;">&#xa0;</td><td style="width:10pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">&#x25cf;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">Allowed taxpayers the carryback of Net Operating Losses (NOL) as a result of tax years beginning after <em style="font: inherit;"> December 31, 2017, </em>but before <em style="font: inherit;"> January 1, 2021 </em>for the <em style="font: inherit;">five</em> prior years of the generated loss.</p> </td></tr>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> August 16, 2022, </em>President Biden signed into law the Inflation Reduction Act (IRA) of <em style="font: inherit;">2022,</em> which, among other things, imposes a new <em style="font: inherit;">15%</em> corporate Alternative Minimum Tax (AMT) based on audited financial statement income ("AFSI") applicable to corporations with a <em style="font: inherit;">three</em>-year average AFSI over <em style="font: inherit;">$1</em> billion. The AMT&#xa0;is effective for the <em style="font: inherit;">2023</em> tax year and, if applicable, corporations must pay the greater of the regular corporate income tax or the AMT. Although NOL carryforwards created through the regular corporate income tax system cannot be used to reduce the AMT, financial statement net operating losses can be used to reduce AFSI and the amount of AMT owed. The IRA of <em style="font: inherit;">2022</em> as enacted requires the U.S. Treasury to provide regulations and other guidance necessary to administer the AMT, including further defining allowable adjustments to determine AFSI, which directly impacts the amount of AMT to be paid. Based on interim guidance issued by the U.S. Treasury in late <em style="font: inherit;"> December 2022, </em>the Company believes that it is more likely than <em style="font: inherit;">not</em> it will <em style="font: inherit;">not</em> be subject to the AMT beginning <em style="font: inherit;">2023.</em> The Company continues to evaluate the impacts of the Inflation Reduction Act of <em style="font: inherit;">2022</em> but does <em style="font: inherit;">not</em> expect this legislation to have a material impact on the Company's financial statements.</p>
   <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">For tax years beginning before <em style="font: inherit;"> January 1, 2022, </em>taxpayers can make an election with respect to research and experimental (R&amp;E) expenditures incurred in connection with a trade or business to either currently deduct or defer and amortize such expenditures over a period of <em style="font: inherit;">not</em> less than <em style="font: inherit;">60</em> months. However, the Tax Cuts and Jobs Act of <em style="font: inherit;">2017</em> (TCJA) requires taxpayers to capitalize R&amp;E expenditures effective for taxable years beginning after <em style="font: inherit;"> December 31, 2021. </em>R&amp;E expenditures attributable to US-based research must be amortized over a period of <em style="font: inherit;">5</em> years and R&amp;E expenditures attributable to research conducted outside of the US must be amortized over a period of <em style="font: inherit;">15</em> years. Further, the statute provides that the definition of R&amp;E expenditures includes amounts paid or incurred in connection with the development of any software.&#xa0; The Company has recorded a deferred tax asset of <em style="font: inherit;">$528</em> related to research and experimental expenditures for the year ending <em style="font: inherit;"> December 31, 2022.</em></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 14.7pt;text-align:left;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">The components of loss&#xa0;before taxes for the years ended <em style="font: inherit;"> December&#xa0;</em><em style="font: inherit;">31</em> are as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" id="c2302393" escape="true">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><span style="text-decoration: underline; ">Origin of income before taxes</span></p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">United States</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230802" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,262</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230803" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" scale="3" format="ixt:numdotdecimal" decimals="-3">798</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Foreign</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230804" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">126</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230805" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" scale="3" format="ixt:numdotdecimal" decimals="-4" sign="-">730</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Income (loss) before income taxes</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230806" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ResultsOfOperationsIncomeBeforeIncomeTaxes" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,388</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230807" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ResultsOfOperationsIncomeBeforeIncomeTaxes" scale="3" format="ixt:numdotdecimal" decimals="-3">68</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#xa0;</td></tr>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
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       <em style="font: inherit;">36</em>
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       <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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   <ix:exclude>&#xa0;</ix:exclude>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Significant components of income tax benefit (expense) for the years ended <em style="font: inherit;"> December&#xa0;</em><em style="font: inherit;">31</em> are as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" id="c2302394" escape="true">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Current:</p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Federal</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230811" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:CurrentFederalTaxExpenseBenefit" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230812" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:CurrentFederalTaxExpenseBenefit" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">State</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230813" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:CurrentStateAndLocalTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">6</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230814" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:CurrentStateAndLocalTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">9</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Foreign</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230815" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:CurrentForeignTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-4">10</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"><ix:nonFraction id="c94230816" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:CurrentForeignTaxExpenseBenefit" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Total current</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230817" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:CurrentIncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">16</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230818" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:CurrentIncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">9</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Deferred:</p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Federal</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230820" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:DeferredFederalIncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">19</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"><ix:nonFraction id="c94230821" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:DeferredFederalIncomeTaxExpenseBenefit" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">State</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230822" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">19</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;">(<ix:nonFraction id="c94230823" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">5</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Total deferred</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230824" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:DeferredIncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">38</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;">(<ix:nonFraction id="c94230825" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:DeferredIncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">5</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Income tax expense</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230826" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:IncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">54</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230827" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:IncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">14</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td></tr>
</tbody></table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">A reconciliation between the provision for income taxes calculated at the U.S. federal statutory income tax rate and the consolidated income tax expense in the consolidated statements of operations for the years ended <em style="font: inherit;"> December&#xa0;</em><em style="font: inherit;">31</em> is as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" id="c2302395" escape="true">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Provision at the U.S. federal statutory rate</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230830" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" scale="-2" format="ixt:numdotdecimal" decimals="2">21.0</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230831" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" scale="-2" format="ixt:numdotdecimal" decimals="2">21.0</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">State taxes, net of federal benefit</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230832" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" scale="-2" format="ixt:numdotdecimal" decimals="3" sign="-">3.1</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230833" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" scale="-2" format="ixt:numdotdecimal" decimals="3">15.5</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)%</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Foreign tax rate differential</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230834" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential" scale="-2" format="ixt:numdotdecimal" decimals="3" sign="-">0.4</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230835" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential" scale="-2" format="ixt:numdotdecimal" decimals="3">30.2</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Valuation allowance</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230836" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance" scale="-2" format="ixt:numdotdecimal" decimals="3">48.8</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230837" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance" scale="-2" format="ixt:numdotdecimal" decimals="3">1504.6</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)%</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Chile outside basis differential</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230838" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent" scale="-2" format="ixt:numdotdecimal" decimals="3">0.4</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230839" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent" scale="-2" format="ixt:numdotdecimal" decimals="3">34.4</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">PPP Loan Forgiveness</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230840" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent" scale="-2" format="ixt:zerodash" decimals="0">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230841" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent" scale="-2" format="ixt:numdotdecimal" decimals="3" sign="-">484.6</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">)%</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Accrual to return</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230842" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent" scale="-2" format="ixt:numdotdecimal" decimals="3">3.1</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230843" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent" scale="-2" format="ixt:numdotdecimal" decimals="3" sign="-">329.3</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">)%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Research and development credit</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230844" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" scale="-2" format="ixt:numdotdecimal" decimals="3" sign="-">5.9</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230845" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" scale="-2" format="ixt:numdotdecimal" decimals="3">144.9</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">)%</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">State rate change</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230846" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" scale="-2" format="ixt:numdotdecimal" decimals="3" sign="-">9.5</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94230847" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" scale="-2" format="ixt:numdotdecimal" decimals="2">124.0</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">China deferred adjustment</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230848" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent" scale="-2" format="ixt:zerodash" decimals="0">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230849" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent" scale="-2" format="ixt:numdotdecimal" decimals="2">1006.0</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">China enterprise tax</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230850" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent" scale="-2" format="ixt:zerodash" decimals="0">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230851" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent" scale="-2" format="ixt:zerodash" decimals="0">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Share based compensation</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230852" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent" scale="-2" format="ixt:numdotdecimal" decimals="3">3.3</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230853" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent" scale="-2" format="ixt:numdotdecimal" decimals="3">1590.3</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Other true up</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230854" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent" scale="-2" format="ixt:zerodash" decimals="0" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230855" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent" scale="-2" format="ixt:zerodash" decimals="0" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Intangible assets impairment and other non-deductibles</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230856" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent" scale="-2" format="ixt:zerodash" decimals="0" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230857" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="ftek:EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent" scale="-2" format="ixt:zerodash" decimals="0" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Other</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230858" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments" scale="-2" format="ixt:numdotdecimal" decimals="3">1.8</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230859" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateReconciliationOtherAdjustments" scale="-2" format="ixt:numdotdecimal" decimals="2" sign="-">2.0</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Income tax (expense) benefit effective rate</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230860" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateContinuingOperations" scale="-2" format="ixt:numdotdecimal" decimals="3">3.9</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230861" contextRef="d_2021-01-01_2021-12-31" unitRef="Pure" name="us-gaap:EffectiveIncomeTaxRateContinuingOperations" scale="-2" format="ixt:numdotdecimal" decimals="3" sign="-">20.6</ix:nonFraction></td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">%</td></tr>
</tbody></table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The deferred tax assets and liabilities at <em style="font: inherit;"> December&#xa0;</em><em style="font: inherit;">31</em> are as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" id="c2302396" escape="true">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Deferred tax assets:</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Stock compensation expense</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230865" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" scale="3" format="ixt:numdotdecimal" decimals="-3">272</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230866" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost" scale="3" format="ixt:numdotdecimal" decimals="-3">173</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Goodwill</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230867" contextRef="i_2022-12-31" unitRef="USD" name="ftek:DeferredTaxAssetsGoodwill" scale="3" format="ixt:numdotdecimal" decimals="-3">182</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230868" contextRef="i_2021-12-31" unitRef="USD" name="ftek:DeferredTaxAssetsGoodwill" scale="3" format="ixt:numdotdecimal" decimals="-3">591</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Royalty accruals</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230869" contextRef="i_2022-12-31" unitRef="USD" name="ftek:DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals" scale="3" format="ixt:numdotdecimal" decimals="-4">10</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230870" contextRef="i_2021-12-31" unitRef="USD" name="ftek:DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals" scale="3" format="ixt:numdotdecimal" decimals="-4">10</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Bad debt allowance</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230871" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" scale="3" format="ixt:numdotdecimal" decimals="-3">53</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230872" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts" scale="3" format="ixt:numdotdecimal" decimals="-3">51</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Net operating loss carryforwards</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230873" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsOperatingLossCarryforwards" scale="3" format="ixt:numdotdecimal" decimals="-3">12,158</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230874" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsOperatingLossCarryforwards" scale="3" format="ixt:numdotdecimal" decimals="-4">11,950</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Credit carry-forwards</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230875" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsTaxCreditCarryforwards" scale="3" format="ixt:numdotdecimal" decimals="-3">1,058</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230876" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsTaxCreditCarryforwards" scale="3" format="ixt:numdotdecimal" decimals="-3">992</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Inventory reserve</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230877" contextRef="i_2022-12-31" unitRef="USD" name="ftek:DeferredTaxAssetsInventoryReserve" scale="3" format="ixt:numdotdecimal" decimals="-3">233</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230878" contextRef="i_2021-12-31" unitRef="USD" name="ftek:DeferredTaxAssetsInventoryReserve" scale="3" format="ixt:numdotdecimal" decimals="-3">217</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Depreciation</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230879" contextRef="i_2022-12-31" unitRef="USD" name="ftek:DeferredTaxAssetsDepreciation" scale="3" format="ixt:numdotdecimal" decimals="-3">585</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230880" contextRef="i_2021-12-31" unitRef="USD" name="ftek:DeferredTaxAssetsDepreciation" scale="3" format="ixt:numdotdecimal" decimals="-3">556</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 18pt;">Research and Development Costs</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230881" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch" scale="3" format="ixt:numdotdecimal" decimals="-3">528</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230882" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsTaxCreditCarryforwardsResearch" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Other</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230883" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsOther" scale="3" format="ixt:numdotdecimal" decimals="-3">471</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230884" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsOther" scale="3" format="ixt:numdotdecimal" decimals="-3">376</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Total deferred tax assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230885" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsGross" scale="3" format="ixt:numdotdecimal" decimals="-4">15,550</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230886" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsGross" scale="3" format="ixt:numdotdecimal" decimals="-3">14,916</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Deferred tax liabilities:</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Intangible assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230888" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets" scale="3" format="ixt:numdotdecimal" decimals="-5">100</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230889" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">105</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Total deferred tax liabilities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230890" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredIncomeTaxLiabilities" scale="3" format="ixt:numdotdecimal" decimals="-5">100</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230891" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredIncomeTaxLiabilities" scale="3" format="ixt:numdotdecimal" decimals="-3">105</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Net deferred tax asset before valuation allowance</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230892" contextRef="i_2022-12-31" unitRef="USD" name="ftek:NetDeferredTaxAssetBeforeValuationAllowance" scale="3" format="ixt:numdotdecimal" decimals="-4">15,450</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230893" contextRef="i_2021-12-31" unitRef="USD" name="ftek:NetDeferredTaxAssetBeforeValuationAllowance" scale="3" format="ixt:numdotdecimal" decimals="-3">14,811</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Valuation allowances for deferred tax assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230894" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsValuationAllowance" scale="3" format="ixt:numdotdecimal" decimals="-3">15,627</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94230895" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsValuationAllowance" scale="3" format="ixt:numdotdecimal" decimals="-4">14,950</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Net deferred tax liability</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230896" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxLiabilities" scale="3" format="ixt:numdotdecimal" decimals="-3">177</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94230897" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxLiabilities" scale="3" format="ixt:numdotdecimal" decimals="-3">139</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td></tr>
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       <em style="font: inherit;">37</em>
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   <ix:exclude>&#xa0;</ix:exclude>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The change in the valuation allowance for deferred tax assets for the years ended <em style="font: inherit;"> December&#xa0;</em><em style="font: inherit;">31</em> is as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:SummaryOfValuationAllowanceTextBlock" id="c2302397" escape="true">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Year</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Balance at January 1</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Charged to costs and expenses</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">(Deductions)/Other</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Balance at December 31</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">2021</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230902" contextRef="i_2020-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsValuationAllowance" scale="3" format="ixt:numdotdecimal" decimals="-3">15,971</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">(<ix:nonFraction id="c94230903" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="ftek:ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,021</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230904" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ValuationAllowanceDeferredTaxAssetChangeInAmount" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94230905" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsValuationAllowance" scale="3" format="ixt:numdotdecimal" decimals="-4">14,950</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2022</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230906" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsValuationAllowance" scale="3" format="ixt:numdotdecimal" decimals="-4">14,950</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230907" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="ftek:ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses" scale="3" format="ixt:numdotdecimal" decimals="-3">677</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230908" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ValuationAllowanceDeferredTaxAssetChangeInAmount" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230909" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:DeferredTaxAssetsValuationAllowance" scale="3" format="ixt:numdotdecimal" decimals="-3">15,627</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">For the years ended </span><em style="font: inherit;"> December 31, 2022</em><span style="background-color:#ffffff;">&#xa0;and </span><em style="font: inherit;">2021</em><span style="background-color:#ffffff;">, there were <ix:nonFraction id="c94230759" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:StockIssuedDuringPeriodValueStockOptionsExercised" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> exercises of stock options.</span></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">As required by ASC <em style="font: inherit;">740,</em> we recognize the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than <em style="font: inherit;">not</em> sustain the position following an audit. For tax positions meeting the more-likely-than-<em style="font: inherit;">not</em> threshold, the amount recognized in the financial statements is the largest benefit that has a greater than <em style="font: inherit;">50%</em> likelihood of being realized upon ultimate settlement with the relevant tax authority.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We recognize interest and penalties related to unrecognized tax benefits in income tax expense for all periods presented. There were <ix:nonFraction id="c94230765" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> interest and penalties recognized in income tax expense during the years ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>. There were <ix:nonFraction id="c94230768" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:UnrecognizedTaxBenefits" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> unrecognized tax benefits as of <em style="font: inherit;"> December 31, 2022</em>&#xa0;and <em style="font: inherit;">2021</em>.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">We are subject to taxation in the U.S., various states, and in non-U.S. jurisdictions. Our U.S. income tax returns are primarily subject to examination from <em style="font: inherit;">2020</em>&#xa0;through <em style="font: inherit;">2022;</em> however, U.S. tax authorities also have the ability to review prior tax years to the extent loss carryforwards and tax credit carryforwards are utilized. The open years for the non-U.S. tax returns range from&#xa0;<em style="font: inherit;">2015</em>&#xa0;through&#xa0;<em style="font: inherit;">2022</em>&#xa0;based on local statutes.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 7.2pt;text-align:left;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Management periodically estimates our probable tax obligations using historical experience in tax jurisdictions and informed judgments. There are inherent uncertainties related to the interpretation of tax regulations in the jurisdictions in which we transact business. The judgments and estimates made at a point in time <em style="font: inherit;"> may </em>change based on the outcome of tax audits, as well as changes to or further interpretations of regulations. If such changes take place, there is a risk that the tax rate <em style="font: inherit;"> may </em>increase or decrease in any period. Tax accruals for tax liabilities related to potential changes in judgments and estimates for both federal and state tax issues are included in current liabilities on the consolidated balance sheet.</p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The investment in foreign subsidiaries other than Fuel Tech S.p.A (Chile) and Beijing Fuel Tech is considered to be indefinite in duration and therefore we have <em style="font: inherit;">not</em> provided a provision for deferred U.S.&#xa0;income taxes on the unremitted earnings from those subsidiaries. A provision has <em style="font: inherit;">not</em> been established because it is <em style="font: inherit;">not</em> practicable to determine the amount of unrecognized deferred tax liability for such unremitted foreign earnings and because it is our present intention to reinvest the undistributed earnings indefinitely.</p>
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    <!--Created on 3/5/2021 3:03:58 PM -->
    As required by ASC <em style="font: inherit;">740,</em> a valuation allowance must be established when it is more likely than <em style="font: inherit;">not</em> that all or a portion of a deferred tax asset will <em style="font: inherit;">not</em> be realized. We have approximately $<ix:nonFraction id="c94230781" contextRef="i_2022-12-31_IncomeTaxAuthorityAxis-DomesticCountryMember" unitRef="USD" name="us-gaap:OperatingLossCarryforwards" scale="3" format="ixt:numdotdecimal" decimals="-3">28,227</ix:nonFraction>&#xa0;of U.S. net operating loss carryforwards available to offset future U.S. taxable income as of <em style="font: inherit;"> December 31, 2022.&#xa0; </em>The net operating loss carry-forwards related to tax losses generated in years ending <em style="font: inherit;"> December 31, 2018&#xa0;</em>and before in the U.S. totaling $<ix:nonFraction id="c94230782" contextRef="i_2017-12-31_IncomeTaxAuthorityAxis-DomesticCountryMember" unitRef="USD" name="us-gaap:OperatingLossCarryforwards" scale="3" format="ixt:numdotdecimal" decimals="-3">10,733</ix:nonFraction> begin to expire in <em style="font: inherit;">2034.</em> &#xa0;Further, we have tax loss carry-forwards of approximately $<ix:nonFraction id="c94230784" contextRef="i_2022-12-31_IncomeTaxAuthorityAxis-ForeignCountryMember_IncomeTaxAuthorityNameAxis-MinistryOfEconomicAffairsAndFinanceItalyMember" unitRef="USD" name="us-gaap:OperatingLossCarryforwards" scale="3" format="ixt:numdotdecimal" decimals="-4">6,760</ix:nonFraction> available to offset future foreign income in Italy as of <em style="font: inherit;"> December 31, 2022. </em>We have recorded a full valuation allowance against the deferred tax asset because we cannot anticipate when or if this entity will have taxable income sufficient to utilize the net operating losses in the future. There is <em style="font: inherit;">no</em> expiration of the net operating loss carry-forwards related to tax losses generated in prior years in Italy. Finally, we have tax loss carry-forwards of approximately $<ix:nonFraction id="c94230786" contextRef="i_2022-12-31_IncomeTaxAuthorityAxis-ForeignCountryMember_IncomeTaxAuthorityNameAxis-StateAdministrationOfTaxationChinaMember" unitRef="USD" name="us-gaap:OperatingLossCarryforwards" scale="3" format="ixt:numdotdecimal" decimals="-3">13,684</ix:nonFraction>&#xa0;available to offset future foreign income in China as of <em style="font: inherit;"> December 31, 2022.&#xa0;</em></p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">As of <em style="font: inherit;"> December 31, 2019, </em>the investment in Fuel Tech S.p.A (Chile) was <em style="font: inherit;">no</em> longer considered to be indefinite and a provision for deferred U.S. income taxes was recorded. As of <em style="font: inherit;"> December 31, 2021, </em>the provision for deferred U.S. income taxes related to the&#xa0;Fuel Tech S.p.A (Chile) investment was $<ix:nonFraction id="c94230788" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-FuelTechSpAMember" unitRef="USD" name="us-gaap:DeferredFederalIncomeTaxExpenseBenefit" scale="3" format="ixt:numdotdecimal" decimals="-3">136</ix:nonFraction>. As of <em style="font: inherit;"> December 31, 2022, </em>Fuel Tech S.p.A (Chile) was still included in continuing operations.&#xa0;As a result an additional ($<ix:nonFraction id="c94230789" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-FuelTechSpAMember" unitRef="USD" name="us-gaap:IncreaseDecreaseInDeferredIncomeTaxes" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">15</ix:nonFraction>) was recorded, adjusting the total consideration to $<ix:nonFraction id="c94230790" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-FuelTechSpAMember" unitRef="USD" name="ftek:DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment" scale="3" format="ixt:numdotdecimal" decimals="-3">151</ix:nonFraction>. The deferred income taxes associated with this investment are offset by a valuation allowance of ($<ix:nonFraction id="c94230791" contextRef="i_2022-12-31_StatementBusinessSegmentsAxis-FuelTechSpAMember" unitRef="USD" name="ftek:DeferredIncomeTaxExpenseValuationAllowance" scale="3" format="ixt:numdotdecimal" decimals="-3">151</ix:nonFraction>).</p>
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       <em style="font: inherit;">38</em>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">4.</em>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;COMMON STOCK</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">At <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, respectively, we had <ix:nonFraction id="c94230912" contextRef="i_2022-12-31" unitRef="Share" name="us-gaap:CommonStockSharesIssued" scale="0" format="ixt:numdotdecimal" decimals="INF">31,272,303</ix:nonFraction>&#xa0;and <ix:nonFraction id="c94230913" contextRef="i_2021-12-31" unitRef="Share" name="us-gaap:CommonStockSharesIssued" scale="0" format="ixt:numdotdecimal" decimals="INF">31,227,300</ix:nonFraction>&#xa0;shares of common stock issued and <ix:nonFraction id="c94230914" contextRef="i_2022-12-31" unitRef="Share" name="us-gaap:CommonStockSharesOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">30,296,297</ix:nonFraction>&#xa0;and <ix:nonFraction id="c94230915" contextRef="i_2021-12-31" unitRef="Share" name="us-gaap:CommonStockSharesOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">30,263,791</ix:nonFraction>&#xa0;outstanding, with an additional <ix:nonFraction id="c94230916" contextRef="i_2022-12-31_DebtInstrumentAxis-NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember_LongtermDebtTypeAxis-UnsecuredDebtMember" unitRef="Share" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" format="ixt:numdotdecimal" decimals="INF">6,715</ix:nonFraction>&#xa0;shares reserved for issuance upon conversion of the <em style="font: inherit;">nil</em> coupon non-redeemable convertible unsecured loan notes (see Note <em style="font: inherit;">6</em>). As of <em style="font: inherit;"> December 31, 2022</em>, we had <ix:nonFraction id="c94230919" contextRef="i_2022-12-31_StatementClassOfStockAxis-ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember" unitRef="Share" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" format="ixt:numdotdecimal" decimals="INF">5,600,676</ix:nonFraction>&#xa0;shares reserved for issuance upon the exercise or vesting of equity awards, of which <ix:nonFraction id="c94230920" contextRef="i_2022-12-31_AwardTypeAxis-EmployeeStockOptionMember_StatementClassOfStockAxis-ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember" unitRef="Share" name="us-gaap:CommonStockCapitalSharesReservedForFutureIssuance" scale="0" format="ixt:numdotdecimal" decimals="INF">384,500</ix:nonFraction>&#xa0;are stock options that are currently exercisable (see Note <em style="font: inherit;">8</em>).</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">5.</em>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;TREASURY STOCK</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Common stock held in treasury totaled <ix:nonFraction id="c94230923" contextRef="i_2022-12-31" unitRef="Share" name="us-gaap:TreasuryStockShares" scale="0" format="ixt:numdotdecimal" decimals="INF">976,006</ix:nonFraction>&#xa0;and <ix:nonFraction id="c94230924" contextRef="i_2021-12-31" unitRef="Share" name="us-gaap:TreasuryStockShares" scale="0" format="ixt:numdotdecimal" decimals="INF">963,509</ix:nonFraction>&#xa0;with a cost of $<ix:nonFraction id="c94230925" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:TreasuryStockValue" scale="3" format="ixt:numdotdecimal" decimals="-3">2,251</ix:nonFraction>&#xa0;and $<ix:nonFraction id="c94230926" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:TreasuryStockValue" scale="3" format="ixt:numdotdecimal" decimals="-3">2,234</ix:nonFraction>&#xa0;at <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, respectively. These shares were withheld from employees to settle personal tax withholding obligations that arose as a result of restricted stock units that vested during the periods presented.</p>
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  <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_DebtInstrumentAxis-NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember" name="us-gaap:DebtDisclosureTextBlock" id="c2302400" escape="true">
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">6.</em></b>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;<b><em style="font: inherit;">NIL</em> COUPON NON-REDEEMABLE CONVERTIBLE UNSECURED LOAN NOTES</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">At <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, we had a principal amount of $<ix:nonFraction id="c94230931" contextRef="i_2022-12-31_DebtInstrumentAxis-NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember_LongtermDebtTypeAxis-UnsecuredDebtMember" unitRef="USD" name="us-gaap:DebtInstrumentFaceAmount" scale="3" format="ixt:numdotdecimal" decimals="-3">76</ix:nonFraction> of <span style="-sec-ix-hidden:c94230932">nil</span> coupon non-redeemable convertible unsecured perpetual loan notes (Loan Notes) outstanding. The Loan Notes are convertible at any time into common stock at rates of $<ix:nonFraction id="c94230933" contextRef="i_2022-12-31_DebtInstrumentAxis-NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember_LongtermDebtTypeAxis-UnsecuredDebtMember_RangeAxis-MinimumMember" unitRef="USDPerShare" name="us-gaap:DebtInstrumentConvertibleConversionPrice1" scale="0" format="ixt:numdotdecimal" decimals="INF">6.50</ix:nonFraction> and $<ix:nonFraction id="c94230934" contextRef="i_2022-12-31_DebtInstrumentAxis-NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember_LongtermDebtTypeAxis-UnsecuredDebtMember_RangeAxis-MaximumMember" unitRef="USDPerShare" name="us-gaap:DebtInstrumentConvertibleConversionPrice1" scale="0" format="ixt:numdotdecimal" decimals="INF">11.43</ix:nonFraction> per share, depending on the note. As of <em style="font: inherit;"> December 31, 2022</em>, the <em style="font: inherit;">nil</em> coupon loan notes were convertible into <ix:nonFraction id="c94230936" contextRef="d_2022-01-01_2022-12-31_DebtInstrumentAxis-NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember_LongtermDebtTypeAxis-UnsecuredDebtMember" unitRef="Pure" name="us-gaap:DebtInstrumentConvertibleNumberOfEquityInstruments" scale="0" format="ixt:numdotdecimal" decimals="INF">6,715</ix:nonFraction> shares of common stock. Based on our closing stock price of $<ix:nonFraction id="c94230937" contextRef="i_2022-12-31" unitRef="USDPerShare" name="us-gaap:SharePrice" scale="0" format="ixt:numdotdecimal" decimals="INF">1.27</ix:nonFraction>&#xa0;at <em style="font: inherit;"> December 31, 2022</em>, the aggregate fair value of the common stock that the holders would receive if all the loan notes were converted would be approximately $<ix:nonFraction id="c94230938" contextRef="i_2022-12-31_DebtInstrumentAxis-NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember_LongtermDebtTypeAxis-UnsecuredDebtMember" unitRef="USD" name="us-gaap:DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent" scale="3" format="ixt:numdotdecimal" decimals="-3">9</ix:nonFraction>, which is less than the principal amount of the loans outstanding as of that date. The Loan Notes bear <ix:nonFraction id="c94230939" contextRef="i_2022-12-31_DebtInstrumentAxis-NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember_LongtermDebtTypeAxis-UnsecuredDebtMember" unitRef="Pure" name="us-gaap:DebtInstrumentInterestRateStatedPercentage" scale="-2" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> interest and have <em style="font: inherit;">no</em> maturity date. They are repayable in the event of our dissolution and the holders do <em style="font: inherit;">not</em> have the option to cash-settle the notes. Accordingly, they have been classified within stockholders&#x2019; equity in the accompanying balance sheets. The notes do <em style="font: inherit;">not</em> hold distribution or voting rights unless and until converted into common stock.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">For the years ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, there were <ix:nonFraction id="c94230944" contextRef="i_2022-12-31_DebtInstrumentAxis-NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember_LongtermDebtTypeAxis-UnsecuredDebtMember" unitRef="USD" name="us-gaap:DebtInstrumentRepurchaseAmount" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> Loan Notes repurchased by the Company.</p>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"><b><em style="font: inherit;">7.</em> WARRANTS</b></p>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> February 11, 2021, </em>Fuel Tech entered into a securities purchase agreement&#xa0;to issue and sell, in a private placement, <ix:nonFraction id="c94230947" contextRef="d_2021-02-11_2021-02-11_SubsidiarySaleOfStockAxis-PrivatePlacementMember" unitRef="Share" name="us-gaap:StockIssuedDuringPeriodSharesNewIssues" scale="0" format="ixt:numdotdecimal" decimals="INF">5,000,000</ix:nonFraction> shares of common stock&#xa0;and <ix:nonFraction id="c94230948" contextRef="d_2021-02-11_2021-02-11_ClassOfWarrantOrRightAxis-WarrantsIssuedInConnectionWithPrivatePlacementMember" unitRef="Share" name="ftek:ClassOfWarrantOrRightNumberOfWarrantsIssued" scale="0" format="ixt:numdotdecimal" decimals="INF">2,500,000</ix:nonFraction> warrants exercisable for a total of <ix:nonFraction id="c94230949" contextRef="i_2021-02-11_ClassOfWarrantOrRightAxis-WarrantsIssuedInConnectionWithPrivatePlacementMember" unitRef="Share" name="us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" scale="0" format="ixt:numdotdecimal" decimals="INF">2,500,000</ix:nonFraction> shares of common stock with an exercise price of $<ix:nonFraction id="c94230950" contextRef="i_2021-02-11_ClassOfWarrantOrRightAxis-WarrantsIssuedInConnectionWithPrivatePlacementMember" unitRef="USDPerShare" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" format="ixt:numdotdecimal" decimals="INF">5.10</ix:nonFraction> per Warrant Share, at a purchase price of $<ix:nonFraction id="c94230951" contextRef="i_2021-02-11_SubsidiarySaleOfStockAxis-PrivatePlacementMember" unitRef="USDPerShare" name="us-gaap:SharesIssuedPricePerShare" scale="0" format="ixt:numdotdecimal" decimals="INF">5.1625</ix:nonFraction> per Share and associated warrant. The gross proceeds to the Company from the Private Placement were&#xa0;$<ix:nonFraction id="c94230952" contextRef="d_2021-02-11_2021-02-11_SubsidiarySaleOfStockAxis-PrivatePlacementMember" unitRef="USD" name="us-gaap:ProceedsFromIssuanceOfPrivatePlacement" scale="3" format="ixt:numdotdecimal" decimals="-3">25,812</ix:nonFraction>, before deducting placement agent fees and offering expenses of $<ix:nonFraction id="c94230953" contextRef="d_2021-02-11_2021-02-11_SubsidiarySaleOfStockAxis-PrivatePlacementMember" unitRef="USD" name="us-gaap:PaymentsOfStockIssuanceCosts" scale="3" format="ixt:numdotdecimal" decimals="-3">1,783</ix:nonFraction>. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the <span style="-sec-ix-hidden:c94230954">five</span>&#xa0;and <em style="font: inherit;">one</em>-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale.&#xa0; In addition, the Company issued to the placement agent Warrants to purchase up to <ix:nonFraction id="c94230956" contextRef="i_2021-02-11_ClassOfWarrantOrRightAxis-ThePlacementAgentWarrantsMember" unitRef="Share" name="us-gaap:ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" scale="0" format="ixt:numdotdecimal" decimals="INF">350,000</ix:nonFraction> shares of common stock.&#xa0; The Placement Agent Warrants are exercisable at an exercise price of $<ix:nonFraction id="c94230957" contextRef="i_2021-02-11_ClassOfWarrantOrRightAxis-ThePlacementAgentWarrantsMember" unitRef="USDPerShare" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" format="ixt:numdotdecimal" decimals="INF">6.45</ix:nonFraction>&#xa0;per share of common stock and expire on the <span style="-sec-ix-hidden:c94230958">five</span>&#xa0;and <em style="font: inherit;">one</em>-half year anniversary of the effective date of the registration statement registering the Shares and the Warrant Shares for resale.</p>
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">Fuel Tech uses the Black-Scholes option pricing model to estimate the grant date fair value of the warrants. The principal variable assumptions utilized in valuing warrants and the methodology for estimating such model inputs are: (<em style="font: inherit;">1</em>)&#xa0;risk-free interest rate of <ix:nonFraction id="c94230961" contextRef="i_2021-02-11_MeasurementInputTypeAxis-MeasurementInputRiskFreeInterestRateMember" unitRef="Pure" name="us-gaap:WarrantsAndRightsOutstandingMeasurementInput" scale="-2" format="ixt:numdotdecimal" decimals="4">0.59</ix:nonFraction>%, an estimate based on the yield of zero&#x2013;coupon treasury securities with a maturity equal to the expected life of the warrant; (<em style="font: inherit;">2</em>)&#xa0;expected volatility of <ix:nonFraction id="c94230963" contextRef="i_2021-02-11_MeasurementInputTypeAxis-MeasurementInputPriceVolatilityMember" unitRef="Pure" name="us-gaap:WarrantsAndRightsOutstandingMeasurementInput" scale="-2" format="ixt:numdotdecimal" decimals="4">94.66</ix:nonFraction>% &#x2013; an estimate based on the historical volatility of Fuel Tech&#x2019;s common stock for a period equal to the expected life of the warrant; and (<em style="font: inherit;">3</em>)&#xa0;expected life of the warrant of <span style="-sec-ix-hidden:c94230965">five</span> and <em style="font: inherit;">one</em>-half years based on the term of the warrant.&#xa0;</p>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">The calculated fair value allocated to the warrants is $<ix:nonFraction id="c94230967" contextRef="i_2021-02-11" unitRef="USD" name="us-gaap:WarrantsAndRightsOutstanding" scale="3" format="ixt:numdotdecimal" decimals="-3">7,337</ix:nonFraction>.&#xa0; This amount has been recorded as Additional paid in capital - warrants and is shown net in the Additional paid in capital line of the consolidated balance sheets.&#xa0;&#xa0;</p>
   <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">The issuance of warrants to purchase shares of the Company's common stock are summarized as follows:</p>
   <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="ftek:ScheduleOfWarrantActivityTableTextBlock" id="c2302402" escape="true">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Shares</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Outstanding as of December 31, 2021</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"><ix:nonFraction id="c94230969" contextRef="i_2021-12-31" unitRef="Share" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">2,850,000</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Granted</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230970" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="ftek:ClassOfWarrantOrRightNumberOfWarrantsIssued" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Exercised</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"><ix:nonFraction id="c94230971" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="ftek:ClassOfWarrantOrRightExercisedDuringPeriod" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Outstanding as of December 31, 2022</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230972" contextRef="i_2022-12-31" unitRef="Share" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">2,850,000</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
      </tr>

     </tbody>
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   </ix:nonNumeric>
   <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">The following table summarizes information about warrants outstanding and exercisable at <em style="font: inherit;"> December 31, 2022</em>:</p>
   <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" id="c2302403" escape="true">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Number</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Weighted-Average</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Outstanding/</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Remaining Life</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Weighted-Average</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td colspan="2" style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"><em style="font: inherit;">Range of Exercise Price</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Exercisable</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">in Years</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Exercise Price</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><em style="font: inherit;">5.10</em></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230986" contextRef="i_2022-12-31_ClassOfWarrantOrRightAxis-WarrantsIssuedInConnectionWithPrivatePlacementMember" unitRef="Share" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">2,500,000</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_ClassOfWarrantOrRightAxis-WarrantsIssuedInConnectionWithPrivatePlacementMember" name="ftek:ClassOfWarrantOrRightWeightedAverageRemainingLife" id="c94230987" format="ixt-sec:duryear">3.62</ix:nonNumeric></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230988" contextRef="i_2022-12-31_ClassOfWarrantOrRightAxis-WarrantsIssuedInConnectionWithPrivatePlacementMember" unitRef="USDPerShare" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" format="ixt:numdotdecimal" decimals="INF">5.10</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><em style="font: inherit;">6.45</em></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94230990" contextRef="i_2022-12-31_ClassOfWarrantOrRightAxis-ThePlacementAgentWarrantsMember" unitRef="Share" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">350,000</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_ClassOfWarrantOrRightAxis-ThePlacementAgentWarrantsMember" name="ftek:ClassOfWarrantOrRightWeightedAverageRemainingLife" id="c94230991" format="ixt-sec:duryear">3.62</ix:nonNumeric></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94230992" contextRef="i_2022-12-31_ClassOfWarrantOrRightAxis-ThePlacementAgentWarrantsMember" unitRef="USDPerShare" name="us-gaap:ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1" scale="0" format="ixt:numdotdecimal" decimals="INF">6.45</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94230994" contextRef="i_2022-12-31" unitRef="Share" name="us-gaap:ClassOfWarrantOrRightOutstanding" scale="0" format="ixt:numdotdecimal" decimals="INF">2,850,000</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td>
      </tr>

     </tbody>
    </table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
  </ix:nonNumeric>
  <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">&#xa0;</p>
  <div>
    &#xa0;
  </div>
  <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" id="c2302404" escape="true">
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b><em style="font: inherit;">8.</em>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;STOCK-BASED COMPENSATION</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Under our stock-based employee compensation plan, referred to as the Fuel Tech, Inc. <em style="font: inherit;">2014</em> Long-Term Incentive Plan (Incentive Plan), awards <em style="font: inherit;"> may </em>be granted to participants in the form of Non-Qualified Stock Options, Incentive Stock Options, Stock Appreciation Rights, Restricted Stock, RSUs, Performance Awards, Bonuses or other forms of share-based or non-share-based awards or combinations thereof. Participants in the Incentive Plan <em style="font: inherit;"> may </em>be our directors, officers, employees, consultants or advisors (except consultants or advisors in capital-raising transactions) as the directors determine are key to the success of our business. There are a maximum of <ix:nonFraction id="c94230999" contextRef="i_2022-12-31_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" scale="0" format="ixt:numdotdecimal" decimals="INF">5,600,676</ix:nonFraction>&#xa0;shares that <em style="font: inherit;"> may </em>be issued or reserved for awards to participants under the Incentive Plan. At <em style="font: inherit;"> December 31, 2022</em>, we had <ix:nonFraction id="c94231000" contextRef="i_2022-12-31_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" scale="0" format="ixt:numdotdecimal" decimals="INF">1,899,250</ix:nonFraction>&#xa0;equity awards available for issuance under the Incentive Plan.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We did <span style="-sec-ix-hidden:c94231001"><span style="-sec-ix-hidden:c94232765">not</span></span> record any excess tax benefits within income tax expense for the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and&#xa0;<em style="font: inherit;">2021</em>. Given the Company has a full valuation allowance on its deferred tax assets, there were <em style="font: inherit;">no</em> excess tax benefits to record. In addition, we account for forfeitures of awards based on an estimate of the number of awards expected to be forfeited and adjusting the estimate when it is <em style="font: inherit;">no</em> longer probable that the employee will fulfill the service condition.</p>
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       <em style="font: inherit;">39</em>
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       <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Stock-based compensation is included in selling, general and administrative costs in our consolidated statements of operations. The components of stock-based compensation from continuing operations for the years ended <em style="font: inherit;"> December 31, 2022</em> and&#xa0;<em style="font: inherit;">2021</em>&#xa0;were as follows:</p>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" id="c2302405" escape="true">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">For the Year Ended December 31,</em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Stock options and restricted stock units, net of forfeitures</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231061" contextRef="d_2022-01-01_2022-12-31_IncomeStatementLocationAxis-SellingGeneralAndAdministrativeExpensesMember" unitRef="USD" name="us-gaap:AllocatedShareBasedCompensationExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">224</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231062" contextRef="d_2021-01-01_2021-12-31_IncomeStatementLocationAxis-SellingGeneralAndAdministrativeExpensesMember" unitRef="USD" name="us-gaap:AllocatedShareBasedCompensationExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">82</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">After-tax effect of stock based compensation</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231063" contextRef="d_2022-01-01_2022-12-31_IncomeStatementLocationAxis-SellingGeneralAndAdministrativeExpensesMember" unitRef="USD" name="us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax" scale="3" format="ixt:numdotdecimal" decimals="-3">224</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231064" contextRef="d_2021-01-01_2021-12-31_IncomeStatementLocationAxis-SellingGeneralAndAdministrativeExpensesMember" unitRef="USD" name="us-gaap:AllocatedShareBasedCompensationExpenseNetOfTax" scale="3" format="ixt:numdotdecimal" decimals="-3">82</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Stock Options</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The stock options granted to employees under the Incentive Plan have a <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-EmployeeStockOptionMember_PlanNameAxis-The2014LongTermIncentivePlanMember" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" id="c94231007" format="ixt-sec:duryear">10</ix:nonNumeric>-year life and they vest as follows: <ix:nonFraction id="c94231008" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-EmployeeStockOptionMember_PlanNameAxis-The2014LongTermIncentivePlanMember_VestingAxis-ShareBasedCompensationAwardTrancheOneMember" unitRef="Pure" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" scale="-2" format="ixt:numdotdecimal" decimals="1">50</ix:nonFraction>% after the <em style="font: inherit;">second</em> anniversary of the award date, <ix:nonFraction id="c94231010" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-EmployeeStockOptionMember_PlanNameAxis-The2014LongTermIncentivePlanMember_VestingAxis-ShareBasedCompensationAwardTrancheTwoMember" unitRef="Pure" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" scale="-2" format="ixt:numdotdecimal" decimals="2">25</ix:nonFraction>% after the <em style="font: inherit;">third</em> anniversary, and the final <ix:nonFraction id="c94231012" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-EmployeeStockOptionMember_PlanNameAxis-The2014LongTermIncentivePlanMember_VestingAxis-ShareBasedCompensationAwardTrancheThreeMember" unitRef="Pure" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" scale="-2" format="ixt:numdotdecimal" decimals="2">25</ix:nonFraction>% after the <em style="font: inherit;">fourth</em> anniversary of the award date. Fuel Tech calculates stock compensation expense for employee option awards based on the grant date fair value of the award, less expected annual forfeitures, and recognizes expense on a straight-line basis over the <em style="font: inherit;">four</em>-year service period of the award. Stock options granted to members of our Board of Directors vest immediately. Stock compensation for these awards is based on the grant date fair value of the award and is recognized in expense immediately.&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech uses the Black-Scholes option pricing model to estimate the grant date fair value of employee stock options. The principal variable assumptions utilized in valuing options and the methodology for estimating such model inputs include: (<em style="font: inherit;">1</em>)&#xa0;risk-free interest rate &#x2013; an estimate based on the yield of zero&#x2013;coupon treasury securities with a maturity equal to the expected life of the option; (<em style="font: inherit;">2</em>)&#xa0;expected volatility &#x2013; an estimate based on the historical volatility of Fuel Tech&#x2019;s common stock for a period equal to the expected life of the option; and (<em style="font: inherit;">3</em>)&#xa0;expected life of the option &#x2013; an estimate based on historical experience including the effect of employee terminations.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">There were <ix:nonFraction id="c94231018" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-EmployeeStockOptionMember_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> stock options granted during the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and&#xa0;<em style="font: inherit;">2021</em>.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents a summary of our stock option activity and related information for the years ended <em style="font: inherit;"> December&#xa0;</em><em style="font: inherit;">31:</em></p>
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   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfShareBasedCompensationStockOptionsActivityTableTextBlock" id="c2302406" escape="true">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">2022</em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">2021</em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Number of Options</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Weighted-Average Exercise Price</em></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Number of Options</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Weighted-Average Exercise Price</em></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Outstanding at beginning of year</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231073" contextRef="i_2021-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">434,500</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231074" contextRef="i_2021-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" scale="0" format="ixt:numdotdecimal" decimals="INF">3.05</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231075" contextRef="i_2020-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">484,500</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231076" contextRef="i_2020-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" scale="0" format="ixt:numdotdecimal" decimals="INF">3.57</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Granted</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94231077" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94231078" contextRef="d_2022-01-01_2022-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94231079" contextRef="d_2021-01-01_2021-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94231080" contextRef="d_2021-01-01_2021-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Exercised</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231081" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised" scale="0" format="ixt:zerodash" decimals="INF" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231082" contextRef="d_2022-01-01_2022-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 9%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"><ix:nonFraction id="c94231083" contextRef="d_2021-01-01_2021-12-31" unitRef="Share" name="us-gaap:StockIssuedDuringPeriodSharesStockOptionsExercised" scale="0" format="ixt:zerodash" decimals="INF" sign="-">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 9%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"><ix:nonFraction id="c94231084" contextRef="d_2021-01-01_2021-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" scale="0" format="ixt:zerodash" decimals="INF">&#x2014;</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Expired or forfeited</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231085" contextRef="d_2022-01-01_2022-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" scale="0" format="ixt:numdotdecimal" decimals="INF">50,000</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231086" contextRef="d_2022-01-01_2022-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" scale="0" format="ixt:numdotdecimal" decimals="INF">3.55</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231087" contextRef="d_2021-01-01_2021-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" scale="0" format="ixt:numdotdecimal" decimals="INF">50,000</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231088" contextRef="d_2021-01-01_2021-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" scale="0" format="ixt:numdotdecimal" decimals="INF">8.16</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Outstanding at end of year</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231089" contextRef="i_2022-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">384,500</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231090" contextRef="i_2022-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" scale="0" format="ixt:numdotdecimal" decimals="INF">2.98</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231091" contextRef="i_2021-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">434,500</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231092" contextRef="i_2021-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" scale="0" format="ixt:numdotdecimal" decimals="INF">3.05</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Exercisable at end of year</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231093" contextRef="i_2022-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">384,500</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231094" contextRef="i_2022-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" scale="0" format="ixt:numdotdecimal" decimals="INF">2.98</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231095" contextRef="i_2021-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">434,500</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231096" contextRef="i_2021-12-31" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" scale="0" format="ixt:numdotdecimal" decimals="INF">3.05</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Weighted-Average Remaining Contractual Life (years)</p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" id="c94231098" format="ixt-sec:duryear">2.43</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonNumeric contextRef="d_2021-01-01_2021-12-31" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" id="c94231100" format="ixt-sec:duryear">3.08</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Aggregate Intrinsic Value</p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231102" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" scale="3" format="ixt:numdotdecimal" decimals="-3">27</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#xa0;</em></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231104" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" scale="3" format="ixt:numdotdecimal" decimals="-3">38</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The aggregate intrinsic value in the preceding table represents the total pretax intrinsic value, based on our closing stock price of $<ix:nonFraction id="c94231022" contextRef="i_2022-12-31" unitRef="USDPerShare" name="us-gaap:SharePrice" scale="0" format="ixt:numdotdecimal" decimals="INF">1.27</ix:nonFraction>&#xa0;as of <em style="font: inherit;"> December 31, 2022</em>, which would have been received by the option holders had those options holders exercised their stock options as of that date.&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table summarizes information about stock options outstanding at <em style="font: inherit;"> December 31, 2022</em>:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" id="c2302462" escape="true">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td colspan="12" style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"><b>Options Outstanding and Exercisable</b></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 25%; border-bottom: thin solid rgb(0, 0, 0);"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><b>Range of Exercise Prices</b></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b>Number of Options</b></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b>Weighted-Average Remaining Contractual Life (years)</b></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b>Weighted-Average Exercise Price</b></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;">$0.96 - $1.27</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><span style="-sec-ix-hidden:c94232766">&#xa0;</span></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><span style="-sec-ix-hidden:c94232767">&#xa0;</span></td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94232768" contextRef="i_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeOneMember" unitRef="Share" name="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" scale="0" format="ixt:numdotdecimal" decimals="INF">88,000</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 22%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeOneMember" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" id="c94232769" format="ixt-sec:duryear">4.9</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94232770" contextRef="i_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeOneMember" unitRef="USDPerShare" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" scale="0" format="ixt:numdotdecimal" decimals="INF">0.97</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;">$1.28 - $2.01</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><span style="-sec-ix-hidden:c94232771">&#xa0;</span></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><span style="-sec-ix-hidden:c94232772">&#xa0;</span></td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94232773" contextRef="i_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeTwoMember" unitRef="Share" name="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" scale="0" format="ixt:numdotdecimal" decimals="INF">27,000</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 22%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeTwoMember" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" id="c94232774" format="ixt-sec:duryear">3.4</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94232775" contextRef="i_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeTwoMember" unitRef="USDPerShare" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" scale="0" format="ixt:numdotdecimal" decimals="INF">1.58</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt; text-align: center;">$2.02 - $3.15</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><span style="-sec-ix-hidden:c94232776">&#xa0;</span></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><span style="-sec-ix-hidden:c94232777">&#xa0;</span></td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94232778" contextRef="i_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeThreeMember" unitRef="Share" name="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" scale="0" format="ixt:numdotdecimal" decimals="INF">105,000</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 22%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; text-align: center; padding: 0; margin: 0"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeThreeMember" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" id="c94232779" format="ixt-sec:duryear">2.4</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94232780" contextRef="i_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeThreeMember" unitRef="USDPerShare" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" scale="0" format="ixt:numdotdecimal" decimals="INF">2.44</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;">$3.16 - $4.54</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><span style="-sec-ix-hidden:c94232781">&#xa0;</span></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><span style="-sec-ix-hidden:c94232782">&#xa0;</span></td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94232783" contextRef="i_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeFourMember" unitRef="Share" name="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" scale="0" format="ixt:numdotdecimal" decimals="INF">70,000</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 22%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeFourMember" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" id="c94232784" format="ixt-sec:duryear">0.4</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94232785" contextRef="i_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeFourMember" unitRef="USDPerShare" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" scale="0" format="ixt:numdotdecimal" decimals="INF">3.85</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;">$4.55 - $5.22</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"><span style="-sec-ix-hidden:c94232786">&#xa0;</span></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"><span style="-sec-ix-hidden:c94232787">&#xa0;</span></td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94232788" contextRef="i_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeFiveMember" unitRef="Share" name="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" scale="0" format="ixt:numdotdecimal" decimals="INF">94,500</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 22%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeFiveMember" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" id="c94232789" format="ixt-sec:duryear">1.4</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94232790" contextRef="i_2022-12-31_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-RangeFiveMember" unitRef="USDPerShare" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" scale="0" format="ixt:numdotdecimal" decimals="INF">5.22</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"><em style="font: inherit;">&#xa0;</em></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"><em style="font: inherit;">&#xa0;</em></td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94232793" contextRef="i_2022-12-31" unitRef="Share" name="us-gaap:ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" scale="0" format="ixt:numdotdecimal" decimals="INF">384,500</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 22%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"><ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" id="c94232794" format="ixt-sec:duryear">2.4</ix:nonNumeric></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 22%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94232795" contextRef="i_2022-12-31" unitRef="USDPerShare" name="us-gaap:SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" scale="0" format="ixt:numdotdecimal" decimals="INF">2.98</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">As of and for the <em style="font: inherit;"> 12 months ended</em> <em style="font: inherit;"> December 31, 2022</em>, there was <em style="font: inherit;">no</em> non-vested stock option activity and <ix:nonFraction id="c94231024" contextRef="i_2022-12-31_AwardTypeAxis-EmployeeStockOptionMember_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="USD" name="us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> total unrecognized compensation cost related to non-vested stock options granted under the Incentive Plan. Fuel Tech received <ix:nonFraction id="c94231025" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ProceedsFromStockOptionsExercised" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> proceeds from the exercise of stock options in the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and&#xa0;<em style="font: inherit;">2021</em>. It is our policy to issue new shares upon option exercises, loan conversions, and vesting of restricted stock units. We have <em style="font: inherit;">not</em> used cash and do <em style="font: inherit;">not</em> anticipate any future use of cash to settle equity instruments granted under share-based payment arrangements.&#xa0;Shares received for exercise of stock options come from newly issued shares.&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Restricted Stock Units</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">RSUs&#xa0;granted to employees vest over time based on continued service (typically vesting over a period between <span style="-sec-ix-hidden:c94231030">two</span> and <span style="-sec-ix-hidden:c94231031">four</span> years), and RSUs granted to directors vest after a <em style="font: inherit;">one</em> year vesting period based on continued service. Such time-vested RSUs are valued at the date of grant using the intrinsic value method based on the closing price of the common stock on the grant date. Compensation cost, adjusted for estimated forfeitures, is amortized on a straight-line basis over the requisite service period.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <ix:exclude>
    <div class="PGFTR" style="text-align: center; width: 100%">
     <div class="hf-row">
      <div class="hf-cell PGNUM" style="text-align: center; font-size: 10pt; font-family: Times New Roman;">
       <em style="font: inherit;">40</em>
      </div>
     </div>
    </div>
    <hr style="PAGE-BREAK-AFTER: always; border: none; width: 100%; height: 2px; color: #000000; background-color: #000000" />
    <div class="PGHDR" style="text-align: left; width: 100%">
     <div class="hf-row">
      <div class="hf-cell TOCLink" style="display: inline-block; text-align: left;">
       <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
      </div>
     </div>
    </div>
   </ix:exclude>
   <ix:exclude>&#xa0;</ix:exclude>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">During the years ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, there were <ix:nonFraction id="c94231035" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" scale="0" format="ixt:numdotdecimal" decimals="INF">45,003</ix:nonFraction>&#xa0;and <ix:nonFraction id="c94231036" contextRef="d_2021-01-01_2021-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" scale="0" format="ixt:numdotdecimal" decimals="INF">50,002</ix:nonFraction>&#xa0;restricted stock units that vested with a grant date fair value of $<ix:nonFraction id="c94231037" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="USD" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" scale="3" format="ixt:numdotdecimal" decimals="-3">68</ix:nonFraction>&#xa0;and $<ix:nonFraction id="c94231038" contextRef="d_2021-01-01_2021-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="USD" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue" scale="3" format="ixt:numdotdecimal" decimals="-3">75</ix:nonFraction>, respectively.&#xa0;As of <em style="font: inherit;"> December 31, 2022</em>, there was $<ix:nonFraction id="c94231039" contextRef="i_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember_PlanNameAxis-The2014LongTermIncentivePlanMember" unitRef="USD" name="us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" scale="3" format="ixt:numdotdecimal" decimals="-3">738</ix:nonFraction>&#xa0;of total unrecognized compensation cost related to all non-vested share-based compensation arrangements granted under the Incentive Plan. That cost is expected to be recognized over the remaining requisite service period of <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember_PlanNameAxis-The2014LongTermIncentivePlanMember" name="us-gaap:EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" id="c94231040" format="ixt-sec:duryear">2.4</ix:nonNumeric>&#xa0;years.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">A summary of restricted stock unit activity for the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and <em style="font: inherit;">2021</em> is as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock" id="c2302408" escape="true">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b><em style="font: inherit;">Shares</em></b></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><b><em style="font: inherit;">Weighted Average Grant Date Fair Value</em></b></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Unvested restricted stock units at December 31, 2020</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231137" contextRef="i_2020-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">100,005</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231138" contextRef="i_2020-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" scale="0" format="ixt:numdotdecimal" decimals="INF">1.50</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Forfeited</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94231139" contextRef="d_2021-01-01_2021-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" scale="0" format="ixt:numdotdecimal" decimals="INF">5,000</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231140" contextRef="d_2021-01-01_2021-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" scale="0" format="ixt:numdotdecimal" decimals="INF">0.97</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Vested</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231141" contextRef="d_2021-01-01_2021-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" scale="0" format="ixt:numdotdecimal" decimals="INF">50,002</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231142" contextRef="d_2021-01-01_2021-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" scale="0" format="ixt:numdotdecimal" decimals="INF">1.50</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Unvested restricted stock units at December 31, 2021</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231143" contextRef="i_2021-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">45,003</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231144" contextRef="i_2021-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" scale="0" format="ixt:numdotdecimal" decimals="INF">1.51</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt">Granted</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94231145" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" scale="0" format="ixt:numdotdecimal" decimals="INF">807,048</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"><ix:nonFraction id="c94231146" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" scale="0" format="ixt:numdotdecimal" decimals="INF">1.32</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Forfeited</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94231147" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" scale="0" format="ixt:numdotdecimal" decimals="INF">40,000</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231148" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" scale="0" format="ixt:numdotdecimal" decimals="INF">1.32</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Vested</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231149" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" scale="0" format="ixt:numdotdecimal" decimals="INF">45,003</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231150" contextRef="d_2022-01-01_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" scale="0" format="ixt:numdotdecimal" decimals="INF">1.51</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Unvested restricted stock units at December 31, 2022</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231151" contextRef="i_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="Share" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" scale="0" format="ixt:numdotdecimal" decimals="INF">767,048</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231152" contextRef="i_2022-12-31_AwardTypeAxis-RestrictedStockUnitsRSUMember" unitRef="USDPerShare" name="us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" scale="0" format="ixt:numdotdecimal" decimals="INF">1.32</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Deferred Directors Fees</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">In addition to the Incentive Plan, Fuel Tech has a Deferred Compensation Plan for Directors (Deferred Plan). Under the terms of the Deferred Plan, Directors can elect to defer Directors&#x2019; fees for shares of Fuel Tech common stock that are issuable at a future date as defined in the agreement. In accordance with ASC <em style="font: inherit;">718,</em> Fuel Tech accounts for these awards as equity awards as opposed to liability awards. In <em style="font: inherit;">2022</em>&#xa0;and&#xa0;<em style="font: inherit;">2021</em>, there was <ix:nonFraction id="c94231045" contextRef="d_2021-01-01_2021-12-31_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis-DeferredCompensationPlanForDirectorsMember" unitRef="USD" name="us-gaap:DeferredCompensationArrangementWithIndividualCompensationExpense" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> stock-based compensation expense under the Deferred Plan.</p>
  </ix:nonNumeric>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <div>
    &#xa0;
  </div>
  <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:CommitmentsAndContingenciesDisclosureTextBlock" id="c2302409" escape="true">
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">9.</em>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;COMMITMENTS AND CONTINGENCIES</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>&#xa0;</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech is subject to various claims and contingencies related to, among other things, workers compensation, general liability (including product liability), and lawsuits. The Company records liabilities where a contingent loss is probable and can be reasonably estimated. If the reasonable estimate of a probable loss is a range, the Company records the most probable estimate of the loss or the minimum amount when <em style="font: inherit;">no</em> amount within the range is a better estimate than any other amount. The Company discloses a contingent liability even if the liability is <em style="font: inherit;">not</em> probable or the amount is <em style="font: inherit;">not</em> estimable, or both, if there is a reasonable possibility that a material loss <em style="font: inherit;"> may </em>have been incurred.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">From time to time we are involved in litigation with respect to matters arising from the ordinary conduct of our business.&#xa0;In the opinion of management, based upon presently available information, either adequate provision for anticipated costs have been accrued or the ultimate anticipated costs will <em style="font: inherit;">not</em> materially affect our consolidated financial position, results of operations, or cash flows.&#xa0;We do <em style="font: inherit;">not</em> believe we have any pending loss contingencies that are probable or reasonably possible of having a material impact on our consolidated financial position, results of operations or cash flows.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">During the <em style="font: inherit;">third</em> quarter of <em style="font: inherit;">2020,</em> the Company was notified of an equipment component failure at a foreign customer location.&#xa0;The failure&#xa0;was remedied under the warranty provision of&#xa0;the contracts&#xa0;that was in place with the customer and supplier and was completed in the <em style="font: inherit;">third</em> quarter of <em style="font: inherit;">2021.</em>&#xa0;As of <em style="font: inherit;"> December 31, 2022 </em>and <em style="font: inherit;">2021</em> <ix:nonFraction id="c94231164" contextRef="i_2022-12-31_BalanceSheetLocationAxis-OtherAccruedLiabilitiesMember" unitRef="USD" name="us-gaap:LossContingencyAccrualAtCarryingValue" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> charges were recorded in the other accrued liabilities line of the Consolidated Balance Sheets. </span></p>
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       <em style="font: inherit;">41</em>
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       <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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   <ix:exclude>&#xa0;</ix:exclude>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Performance Guarantees</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The majority of Fuel Tech&#x2019;s long-term equipment construction contracts contain language guaranteeing that the performance of the system that is being sold to the customer will meet specific criteria. On occasion, performance surety bonds and bank performance guarantees/letters of credit are issued to the customer in support of the construction contracts as follows:</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:18pt;">&#xa0;</td><td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">&#x2022;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">in support of the warranty period defined in the contract; or</p> </td></tr>
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   <table style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="width:18pt;">&#xa0;</td><td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">&#x2022;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">in support of the system performance criteria that are defined in the contract.</p> </td></tr>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">As of <em style="font: inherit;"> December 31, 2022</em>, we had outstanding bank performance guarantees and letters of credit in the amount of $<ix:nonFraction id="c94231167" contextRef="i_2022-12-31_CreditFacilityAxis-StandbyLettersOfCreditMember_DebtInstrumentAxis-CashCollateralSecurityAgreementMember" unitRef="USD" name="us-gaap:LettersOfCreditOutstandingAmount" scale="3" format="ixt:numdotdecimal" decimals="-3">689</ix:nonFraction>&#xa0;in support of equipment construction contracts that have <em style="font: inherit;">not</em> completed their final acceptance test or that are still operating under a warranty period. The performance guarantees and letters of credit expire in dates ranging from <em style="font: inherit;"> June 2023 </em>through <em style="font: inherit;"> December 2024. </em>The expiration dates <em style="font: inherit;"> may </em>be extended if the project completion dates are extended. Our management believes it is probable that these projects will be successfully completed and that there will <em style="font: inherit;">not</em> be a material adverse impact on our operations from these bank performance guarantees and letters of credit. As a result, <ix:nonFraction id="c94231170" contextRef="i_2022-12-31_DebtInstrumentAxis-PerformanceGuaranteesMember" unitRef="USD" name="us-gaap:DebtInstrumentFaceAmount" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> liability has been recorded for these performance guarantees.</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Product Warranties</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech&#xa0;issues a standard product warranty with the sale of our products to customers. Our recognition of warranty liability is based primarily on analyses of warranty claims experience in the preceding years as the nature of our historical product sales for which we offer a warranty are substantially unchanged. This approach provides an aggregate warranty accrual that is historically aligned with actual warranty claims experienced. There was <ix:nonFraction id="c94231171" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:StandardProductWarrantyAccrualPeriodIncreaseDecrease" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction> change&#xa0;in the warranty liability included in the Other accrued liabilities line of the Consolidated Balance Sheet in <em style="font: inherit;">2022</em>&#xa0;and&#xa0;<em style="font: inherit;">2021</em>. The warranty liability balance was $<ix:nonFraction id="c94231175" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:StandardProductWarrantyAccrual" scale="3" format="ixt:numdotdecimal" decimals="-3">159</ix:nonFraction> at <em style="font: inherit;"> December 31, 2022</em>&#xa0;and&#xa0;<em style="font: inherit;">2021</em>.</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">10.</em>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;LEASES</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>&#xa0;</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">The terms of the Company&#x2019;s <em style="font: inherit;">three</em>&#xa0;primary office space lease arrangements are as follows:</p>
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      <td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#x2022;</p> </td>
      <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Gallarate, Italy building lease, for approximately <ix:nonFraction id="c94231180" contextRef="i_2022-12-31_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis-OfficeBuildingMember_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis-GallarateItalyMember" unitRef="SquareFoot" name="us-gaap:AreaOfRealEstateProperty" scale="0" format="ixt:numdotdecimal" decimals="INF">1,335</ix:nonFraction>&#xa0;square feet, runs through <em style="font: inherit;"> April&#xa0;</em><em style="font: inherit;">30,</em> <em style="font: inherit;">2025.</em> This facility serves as the operating headquarters for our European operations.</p> </td>
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      <td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#x2022;</p> </td>
      <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Aurora, IL warehouse lease, for approximately <ix:nonFraction id="c94231183" contextRef="i_2022-12-31_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis-OfficeBuildingMember_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis-AuroraIllinoisMember" unitRef="SquareFoot" name="us-gaap:AreaOfRealEstateProperty" scale="0" format="ixt:numdotdecimal" decimals="INF">11,000</ix:nonFraction> square feet, runs through <em style="font: inherit;"> December 31, 2023. </em>This facility serves as an outside warehouse facility.&#xa0;</p> </td>
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      <td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#x2022;</p> </td>
      <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Overland Park, KS lease, for approximately <ix:nonFraction id="c94231184" contextRef="i_2022-12-31_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis-OfficeBuildingMember_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis-OverlandParkMember" unitRef="SquareFoot" name="us-gaap:AreaOfRealEstateProperty" scale="0" format="ixt:numdotdecimal" decimals="INF">600</ix:nonFraction> square feet, runs through <em style="font: inherit;"> October 15, 2024. </em>This facility serves primarily as a sales office.</p> </td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The Company also has <span style="-sec-ix-hidden:c94231185">three</span> additional operating leases related to certain office equipment and company leased vehicles and <em style="font: inherit;">one</em> short-term lease. Our leases have remaining lease terms of <ix:nonNumeric contextRef="i_2022-12-31_RangeAxis-MinimumMember" name="us-gaap:LesseeOperatingLeaseRemainingLeaseTerm" id="c94231187" format="ixt-sec:duryear">1.0</ix:nonNumeric>&#xa0;years to <ix:nonNumeric contextRef="i_2022-12-31_RangeAxis-MaximumMember" name="us-gaap:LesseeOperatingLeaseRemainingLeaseTerm" id="c94231188" format="ixt-sec:duryear">2.4</ix:nonNumeric>&#xa0;years. Our leases do <em style="font: inherit;">not</em> contain any material residual value guarantees or material restricted covenants and we currently have <em style="font: inherit;">no</em> material sublease arrangements. We have <em style="font: inherit;">no</em> financing leases as defined under ASC <em style="font: inherit;">842.</em></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Total operating lease expense for the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;is as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:LeaseCostTableTextBlock" id="c2302411" escape="true">
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0); text-align: center;"><em style="font: inherit;">2022</em></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0); text-align: center;"><em style="font: inherit;">2021</em></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt">&#xa0;</td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Operating lease cost</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231198" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:OperatingLeaseCost" scale="3" format="ixt:numdotdecimal" decimals="-3">176</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231199" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:OperatingLeaseCost" scale="3" format="ixt:numdotdecimal" decimals="-3">198</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Short-term lease cost</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231200" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ShortTermLeaseCost" scale="3" format="ixt:numdotdecimal" decimals="-3">29</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231201" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ShortTermLeaseCost" scale="3" format="ixt:numdotdecimal" decimals="-3">21</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Total lease cost</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231202" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:LeaseCost" scale="3" format="ixt:numdotdecimal" decimals="-3">205</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231203" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:LeaseCost" scale="3" format="ixt:numdotdecimal" decimals="-3">219</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The weighted average remaining lease term was <ix:nonNumeric contextRef="i_2022-12-31" name="us-gaap:OperatingLeaseWeightedAverageRemainingLeaseTerm1" id="c94231193" format="ixt-sec:duryear">1.77</ix:nonNumeric>&#xa0;years as of <em style="font: inherit;"> December 31, 2022</em>. The weighted average discount rate was <ix:nonFraction id="c94231194" contextRef="i_2022-12-31" unitRef="Pure" name="us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent" scale="-2" format="ixt:numdotdecimal" decimals="4">4.48</ix:nonFraction>%&#xa0;as of <em style="font: inherit;"> December 31, 2022</em>.&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Remaining maturities of our existing lease liabilities as of <em style="font: inherit;"> December 31, 2022</em> were as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 85%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Year Ending December 31,</p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Operating Leases</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2023</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231205" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" scale="3" format="ixt:numdotdecimal" decimals="-3">149</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2024</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231206" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" scale="3" format="ixt:numdotdecimal" decimals="-3">61</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2025</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231207" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree" scale="3" format="ixt:numdotdecimal" decimals="-3">13</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Thereafter</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231208" contextRef="i_2022-12-31" unitRef="USD" name="ftek:LesseeOperatingLeaseLiabilityToBePaidAfterYearThree" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total lease payments</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231209" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue" scale="3" format="ixt:numdotdecimal" decimals="-3">223</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Less imputed interest</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231210" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" scale="3" format="ixt:numdotdecimal" decimals="-3">32</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231211" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiability" scale="3" format="ixt:numdotdecimal" decimals="-3">191</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
      </tr>

     </tbody>
    </table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">The following is the balance sheet classification of our existing lease liabilities:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="ftek:OperatingLeaseLiabilitiesTableTextBlock" id="c2302413" escape="true">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Operating lease liabilities - current</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231214" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiabilityCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">125</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231215" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiabilityCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">113</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Operating lease liabilities - non-current</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231216" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiabilityNoncurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">66</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231217" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiabilityNoncurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">122</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Total operating lease liabilities</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231218" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiability" scale="3" format="ixt:numdotdecimal" decimals="-3">191</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231219" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:OperatingLeaseLiability" scale="3" format="ixt:numdotdecimal" decimals="-3">235</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
      </tr>

     </tbody>
    </table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <ix:exclude>
    <div class="PGFTR" style="text-align: center; width: 100%">
     <div class="hf-row">
      <div class="hf-cell PGNUM" style="text-align: center; font-size: 10pt; font-family: Times New Roman;">
       <em style="font: inherit;">42</em>
      </div>
     </div>
    </div>
    <hr style="PAGE-BREAK-AFTER: always; border: none; width: 100%; height: 2px; color: #000000; background-color: #000000" />
    <div class="PGHDR" style="text-align: left; width: 100%">
     <div class="hf-row">
      <div class="hf-cell TOCLink" style="display: inline-block; text-align: left;">
       <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
      </div>
     </div>
    </div>
   </ix:exclude>
   <ix:exclude>&#xa0;</ix:exclude>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Supplemental cash flow information related to leases was as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="ftek:LesseeOperatingLeasesSupplementalCashFlowInformationTableTextBlock" id="c2302414" escape="true">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">For the Twelve Months ended December 31, 2022</em></td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">For the twelve months ended December 31, 2021</em></td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Cash paid for amounts included in the measurement of lease liabilities</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231222" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:OperatingLeasePayments" scale="3" format="ixt:numdotdecimal" decimals="-3">157</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231223" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:OperatingLeasePayments" scale="3" format="ixt:numdotdecimal" decimals="-3">178</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Leased assets obtained in exchange for operating lease liabilities</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231224" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" scale="3" format="ixt:numdotdecimal" decimals="-3">139</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231225" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" scale="3" format="ixt:numdotdecimal" decimals="-3">158</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

     </tbody>
    </table>
   </ix:nonNumeric>
  </ix:nonNumeric>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>&#xa0;</b></p>
  <div>
    &#xa0;
  </div>
  <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:DebtDisclosureTextBlock" id="c2302415" escape="true">
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">11.</em>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;DEBT FINANCING</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">On <em style="font: inherit;"> June 30, 2022, </em>the Company entered into an Investment Collateral Security agreement&#xa0;to use for the sole purpose of issuing standby letters of credit that replaces the former Cash Collateral agreement with BMO Harris. The Investment Collateral Security agreement requires us to pledge our investments as collateral for <ix:nonFraction id="c94231227" contextRef="d_2022-06-30_2022-06-30" unitRef="Pure" name="ftek:PercentageOfFaceAmountOfLettersOfCreditAsCollateral" scale="-2" format="ixt:numdotdecimal" decimals="1">150</ix:nonFraction>% of the aggregate face amount of outstanding standby letters of credit. The Company pays <ix:nonFraction id="c94231228" contextRef="d_2022-06-30_2022-06-30" unitRef="Pure" name="ftek:PaymentBasisPointsOnFaceValueOfLettersOfCredit" scale="-4" format="ixt:numdotdecimal" decimals="3">250</ix:nonFraction> basis points on the face values of outstanding letters of credit. There are <em style="font: inherit;">no</em> financial covenants set forth in the Investment Collateral Security agreement. At <em style="font: inherit;"> December 31, 2022</em>, the Company had outstanding standby letters of credit totaling approximately $<ix:nonFraction id="c94231230" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:LettersOfCreditOutstandingAmount" scale="3" format="ixt:numdotdecimal" decimals="-3">689</ix:nonFraction>&#xa0;under the Investment Collateral Security agreement. At <em style="font: inherit;"> December 31, 2022</em>, the investments held as collateral totaled $<ix:nonFraction id="c94231231" contextRef="i_2022-12-31_PledgedStatusAxis-AssetPledgedAsCollateralMember" unitRef="USD" name="us-gaap:Investments" scale="3" format="ixt:numdotdecimal" decimals="-3">1,034</ix:nonFraction>. Fuel Tech is committed to reimbursing the issuing bank for any payments made by the bank under these instruments.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> April 17, 2020, </em>the Company received $<ix:nonFraction id="c94231232" contextRef="d_2020-04-17_2020-04-17_DebtInstrumentAxis-PaycheckProtectionProgramCaresActMember" unitRef="USD" name="us-gaap:ProceedsFromIssuanceOfLongTermDebt" scale="3" format="ixt:numdotdecimal" decimals="-3">1,556</ix:nonFraction> in loan proceeds from the Paycheck Protection Program (PPP), established pursuant to the Coronavirus Aid, Relief, and Economic Security Act&#xa0;and administered by the U.S. Small Business Administration (SBA). The unsecured loan is evidenced by a promissory note of the Company dated <em style="font: inherit;"> April 15, 2020&#xa0;</em>in the principal amount of $<ix:nonFraction id="c94231233" contextRef="d_2021-01-08_2021-01-08_DebtInstrumentAxis-PaycheckProtectionProgramCaresActMember" unitRef="USD" name="us-gaap:DebtInstrumentDecreaseForgiveness" scale="3" format="ixt:numdotdecimal" decimals="-3">1,556</ix:nonFraction>, issued to BMO Harris Bank N.A., the lender.&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> January 8, 2021, </em>the Company received full forgiveness from the SBA for the entire balance of loan proceeds used to&#xa0;fund its qualified payroll&#xa0;expenses. The Company accounted for the PPP Loan as debt in accordance with ASC&#xa0;<em style="font: inherit;">470,</em> Debt and accrued&#xa0;interest in accordance with the interest method under ASC <em style="font: inherit;">835</em>-<em style="font: inherit;">30.</em>&#xa0; When the loan was forgiven,&#xa0;the Company reduced the non-current liability by the amount forgiven&#xa0;and recorded other income&#xa0;in the Consolidated Statements of Operations. The SBA has the right to audit the loan forgiveness for <em style="font: inherit;">6</em> years after the date the loan was forgiven.&#xa0;&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"><b>&#xa0;&#xa0;&#xa0;</b></p>
  </ix:nonNumeric>
  <div>
    &#xa0;
  </div>
  <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:SegmentReportingDisclosureTextBlock" id="c2302416" escape="true">
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">12.</em>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;BUSINESS SEGMENT AND&#xa0;GEOGRAPHIC FINANCIAL DATA</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Business Segment Financial Data</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">We segregate our financial results into <ix:nonFraction id="c94231240" contextRef="d_2022-01-01_2022-12-31" unitRef="Pure" name="us-gaap:NumberOfReportableSegments" scale="0" format="ixt-sec:numwordsen" decimals="INF">two</ix:nonFraction> reportable segments representing <em style="font: inherit;">two</em> broad technology segments as follows:</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;">
    <tbody>
     <tr>
      <td style="width:38pt;">&#xa0;</td>
      <td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#x2022;</p> </td>
      <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Air Pollution Control technology segment includes technologies to reduce NOx emissions in flue gas generated by the firing of natural gas or coal from boilers, incinerators, furnaces and other stationary combustion sources. These include Over Fire Air systems, NOxOUT<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> and HERT&#x2122; Selective Non-Catalytic Reduction&#xa0;systems, and Selective Catalytic Reduction (SCR) systems. Our SCR systems can also include Ammonia Injection Grid, and GSG&#x2122; Graduated Straightening Grid systems to provide high NOx reductions at significantly lower capital and operating costs than conventional SCR systems. ULTRA<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> technology creates ammonia at a plant site using safe urea for use with any SCR application. ESP technologies make use of electrostatic precipitator products and services to reduce particulate matter. FGC systems are chemical injection systems offered in markets outside the U.S. and Canada to enhance electrostatic precipitator and fabric filter performance in controlling particulate emissions.</p> </td>
     </tr>

    </tbody>
   </table>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;">
    <tbody>
     <tr>
      <td style="width:38pt;">&#xa0;</td>
      <td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#x2022;</p> </td>
      <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The FUEL CHEM<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> technology segment, which uses chemical processes in combination with advanced CFD and CKM boiler modeling, for the control of slagging, fouling, corrosion, opacity and other sulfur trioxide-related issues in coal-fired furnaces and boilers through the addition of chemicals into the furnace using TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#xae;</sup> Targeted In-Furnace Injection&#x2122; technology.</p> </td>
     </tr>

    </tbody>
   </table>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The &#x201c;Other&#x201d; classification includes those profit and loss items <em style="font: inherit;">not</em> allocated to either reportable segment. There are <em style="font: inherit;">no</em> inter-segment sales that require elimination.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We evaluate performance and allocate resources based on gross margin by reportable segment. The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies. We do <em style="font: inherit;">not</em> review assets by reportable segment, but rather, in aggregate for the Company as a whole.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Information about reporting segment net sales and gross margin from continuing operations are provided below:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock" id="C1BE1244-B423-4BDD-BDFE-77834BD9EC38" escape="true" continuedAt="c2146AA3B-9D90-4240-A760-8CFC213D658D">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">For the year ended December 31, 2022</span></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Air Pollution Control Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">FUEL CHEM Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Other</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Total</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Revenues from external customers</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231250" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">10,597</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231251" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">16,344</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231252" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231253" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">26,941</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Cost of sales</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231254" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:CostOfRevenue" scale="3" format="ixt:numdotdecimal" decimals="-3">6,924</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231255" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:CostOfRevenue" scale="3" format="ixt:numdotdecimal" decimals="-3">8,374</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231256" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:CostOfRevenue" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231257" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:CostOfRevenue" scale="3" format="ixt:numdotdecimal" decimals="-3">15,298</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Gross margin</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231258" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:GrossProfit" scale="3" format="ixt:numdotdecimal" decimals="-3">3,673</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231259" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:GrossProfit" scale="3" format="ixt:numdotdecimal" decimals="-4">7,970</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231260" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:GrossProfit" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231261" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:GrossProfit" scale="3" format="ixt:numdotdecimal" decimals="-3">11,643</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
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      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Selling, general and administrative</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231262" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:SellingGeneralAndAdministrativeExpense" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231263" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:SellingGeneralAndAdministrativeExpense" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94231264" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:SellingGeneralAndAdministrativeExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">12,275</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94231265" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:SellingGeneralAndAdministrativeExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">12,275</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Research and development</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231266" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231267" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231268" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">895</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231269" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">895</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Operating income (loss) from continuing operations</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231270" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:OperatingIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">3,673</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231271" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:OperatingIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-4">7,970</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94231272" contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:OperatingIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-4" sign="-">13,170</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94231273" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:OperatingIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,527</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
      </tr>

     </tbody>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <ix:exclude>
    <div class="PGFTR" style="text-align: center; width: 100%">
     <div class="hf-row">
      <div class="hf-cell PGNUM" style="text-align: center; font-size: 10pt; font-family: Times New Roman;">
       <em style="font: inherit;">43</em>
      </div>
     </div>
    </div>
    <hr style="PAGE-BREAK-AFTER: always; border: none; width: 100%; height: 2px; color: #000000; background-color: #000000" />
    <div class="PGHDR" style="text-align: left; width: 100%">
     <div class="hf-row">
      <div class="hf-cell TOCLink" style="display: inline-block; text-align: left;">
       <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
      </div>
     </div>
    </div>
   </ix:exclude>
   <ix:exclude>&#xa0;</ix:exclude>
   <ix:continuation id="c2146AA3B-9D90-4240-A760-8CFC213D658D">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">For the year ended December 31, 2021</span></p> </td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Air Pollution Control Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">FUEL CHEM Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Other</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Total</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Revenues from external customers</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231278" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">6,896</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231279" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">17,365</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231280" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231281" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">24,261</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Cost of sales</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231282" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:CostOfRevenue" scale="3" format="ixt:numdotdecimal" decimals="-3">3,529</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231283" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:CostOfRevenue" scale="3" format="ixt:numdotdecimal" decimals="-3">8,834</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231284" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:CostOfRevenue" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231285" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:CostOfRevenue" scale="3" format="ixt:numdotdecimal" decimals="-3">12,363</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Gross margin</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231286" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:GrossProfit" scale="3" format="ixt:numdotdecimal" decimals="-3">3,367</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231287" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:GrossProfit" scale="3" format="ixt:numdotdecimal" decimals="-3">8,531</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231288" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:GrossProfit" scale="3" format="ixt:zerodash" decimals="-3">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231289" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:GrossProfit" scale="3" format="ixt:numdotdecimal" decimals="-3">11,898</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Selling, general and administrative</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231290" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:SellingGeneralAndAdministrativeExpense" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231291" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:SellingGeneralAndAdministrativeExpense" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94231292" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:SellingGeneralAndAdministrativeExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">12,055</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94231293" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:SellingGeneralAndAdministrativeExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">12,055</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Research and development</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231294" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231295" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" format="ixt:zerodash" decimals="-3" sign="-">&#x2014;</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231296" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">1,332</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(<ix:nonFraction id="c94231297" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:ResearchAndDevelopmentExpense" scale="3" format="ixt:numdotdecimal" decimals="-3">1,332</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Operating income (loss) from continuing operations</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231298" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember" unitRef="USD" name="us-gaap:OperatingIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">3,367</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231299" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember" unitRef="USD" name="us-gaap:OperatingIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3">8,531</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94231300" contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AllOtherSegmentsMember" unitRef="USD" name="us-gaap:OperatingIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">13,387</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(<ix:nonFraction id="c94231301" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:OperatingIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">1,489</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">)</td>
      </tr>

     </tbody>
    </table>
   </ix:continuation>
   <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
   <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left"><b>Geographic Segment Financial Data</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Information concerning our operations by geographic area is provided below. Revenues are attributed to countries based on the location of the end-user. Assets are those directly associated with operations of the geographic area.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock" id="c3823FE48-2E40-4792-BB53-E110F7A15B70" escape="true" continuedAt="c2EF6E7C5-E45B-4433-A2D7-B56CAA08F74E">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><span style="text-decoration: underline; ">For the years ended December 31,</span></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Revenues:</p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">United States</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231305" contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-US" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">20,311</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231306" contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-US" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">19,515</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Foreign</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231307" contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-NonUsMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-4">6,630</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231308" contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-NonUsMember" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">4,746</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231309" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">26,941</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231310" contextRef="d_2021-01-01_2021-12-31" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">24,261</ix:nonFraction></td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
      </tr>

     </tbody>
    </table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <ix:continuation id="c2EF6E7C5-E45B-4433-A2D7-B56CAA08F74E">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">As of December 31,</span></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2022</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2021</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Assets:</p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">United States</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231314" contextRef="i_2022-12-31_StatementGeographicalAxis-US" unitRef="USD" name="us-gaap:NoncurrentAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">47,007</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231315" contextRef="i_2021-12-31_StatementGeographicalAxis-US" unitRef="USD" name="us-gaap:NoncurrentAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">46,271</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Foreign</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231316" contextRef="i_2022-12-31_StatementGeographicalAxis-NonUsMember" unitRef="USD" name="us-gaap:NoncurrentAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">3,117</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231317" contextRef="i_2021-12-31_StatementGeographicalAxis-NonUsMember" unitRef="USD" name="us-gaap:NoncurrentAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">3,703</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231318" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:NoncurrentAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">50,124</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231319" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:NoncurrentAssets" scale="3" format="ixt:numdotdecimal" decimals="-3">49,974</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
      </tr>

     </tbody>
    </table>
   </ix:continuation>
  </ix:nonNumeric>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <div>
    &#xa0;
  </div>
  <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:RestructuringAndRelatedActivitiesDisclosureTextBlock" id="c2302421" escape="true">
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">13.</em>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;RESTRUCTURING ACTIVITIES</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> January 18, 2019, </em>the Company announced a planned suspension of its APC&#xa0;business operation in China (Beijing Fuel Tech). This action was part of Fuel Tech&#x2019;s ongoing operational improvement initiatives designed to prioritize resource allocation, reduce costs, and drive profitability for the Company on a global basis. The transition associated with the suspension of the APC business includes staff rationalization, supplier and partner engagement, and the monetization of certain assets. The remaining transition activities include the execution of the remaining activities to satisfy the requirements for the remaining APC projects in China (with a backlog totaling approximately $<ix:nonFraction id="c94231321" contextRef="i_2022-12-31_RestructuringCostAndReserveAxis-BacklogMember_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:RestructuringAndRelatedCostExpectedCostRemaining1" scale="3" format="ixt:numdotdecimal" decimals="-3">5</ix:nonFraction>) in addition to collection efforts for the remaining accounts receivable.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents our revenues and net loss in China for the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and <em style="font: inherit;">2021</em>:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock" id="E27165D7-607D-4B58-8A58-EE55FFEBC581" escape="true" continuedAt="EAF5CB64-C4F6-4A05-A8FF-73434DE206C9">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Total revenues</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231332" contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">3</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231333" contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax" scale="3" format="ixt:numdotdecimal" decimals="-3">22</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Net loss</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94231334" contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">209</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">(<ix:nonFraction id="c94231335" contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:NetIncomeLoss" scale="3" format="ixt:numdotdecimal" decimals="-3" sign="-">114</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">)</td></tr>
</tbody></table>
   </ix:nonNumeric>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents net assets in China for the years ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <ix:continuation id="EAF5CB64-C4F6-4A05-A8FF-73434DE206C9">
    <table class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;" cellspacing="0" cellpadding="0" border="0"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Total assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231338" contextRef="i_2022-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:Assets" scale="3" format="ixt:numdotdecimal" decimals="-3">929</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231339" contextRef="i_2021-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:Assets" scale="3" format="ixt:numdotdecimal" decimals="-3">1,235</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Total liabilities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231340" contextRef="i_2022-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:Liabilities" scale="3" format="ixt:numdotdecimal" decimals="-3">79</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231341" contextRef="i_2021-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:Liabilities" scale="3" format="ixt:numdotdecimal" decimals="-3">92</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Total net assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231342" contextRef="i_2022-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:AssetsNet" scale="3" format="ixt:numdotdecimal" decimals="-4">850</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231343" contextRef="i_2021-12-31_StatementGeographicalAxis-CN" unitRef="USD" name="us-gaap:AssetsNet" scale="3" format="ixt:numdotdecimal" decimals="-3">1,143</ix:nonFraction></td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td></tr>
</tbody></table>
   </ix:continuation>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Total assets primarily consist of cash and accounts receivable. Total liabilities consist of accounts payable and certain accrued liabilities.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The&#xa0;Company&#xa0;recorded&#xa0;<ix:nonFraction id="c94231324" contextRef="d_2022-01-01_2022-12-31" unitRef="USD" name="us-gaap:RestructuringCharges" scale="3" format="ixt-sec:numwordsen" decimals="-3">no</ix:nonFraction>&#xa0;restructuring&#xa0;charges for the years ended <em style="font: inherit;"> December 31, 2022</em>&#xa0;and <em style="font: inherit;">2021</em>.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
   <ix:exclude>
    <div class="PGFTR" style="text-align: center; width: 100%">
     <div class="hf-row">
      <div class="hf-cell PGNUM" style="text-align: center; font-size: 10pt; font-family: Times New Roman;">
       <em style="font: inherit;">44</em>
      </div>
     </div>
    </div>
    <hr style="PAGE-BREAK-AFTER: always; border: none; width: 100%; height: 2px; color: #000000; background-color: #000000" />
    <div class="PGHDR" style="text-align: left; width: 100%">
     <div class="hf-row">
      <div class="hf-cell TOCLink" style="display: inline-block; text-align: left;">
       <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
      </div>
     </div>
    </div>
   </ix:exclude>
   <ix:exclude>&#xa0;</ix:exclude>
  </ix:nonNumeric>
  <div>
    &#xa0;
  </div>
  <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock" id="c2302424" escape="true">
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"><b><em style="font: inherit;">14.</em></b>&#xa0;&#xa0;&#xa0;&#xa0;&#xa0;<b>ACCRUED LIABILITIES</b></p>
   <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">The components of other accrued liabilities are as follows:</p>
   <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
   <ix:nonNumeric contextRef="d_2022-01-01_2022-12-31" name="us-gaap:OtherCurrentLiabilitiesTableTextBlock" id="c2302425" escape="true">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">As of</em></em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">December 31, 2022</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">December 31, 2021</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Contract liabilities (Note 2)</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231349" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:ContractWithCustomerLiabilityCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">372</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231350" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:ContractWithCustomerLiabilityCurrent" scale="3" format="ixt:numdotdecimal" decimals="-4">390</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Warranty reserve (Note 9)</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"><ix:nonFraction id="c94231351" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:ProductWarrantyAccrualClassifiedCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">159</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"><ix:nonFraction id="c94231352" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:ProductWarrantyAccrualClassifiedCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">159</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Other accrued liabilities</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231353" contextRef="i_2022-12-31" unitRef="USD" name="ftek:OtherAccruedLiabilitiesMiscellaneousCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">295</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#xa0;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><ix:nonFraction id="c94231354" contextRef="i_2021-12-31" unitRef="USD" name="ftek:OtherAccruedLiabilitiesMiscellaneousCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">312</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#xa0;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Total other accrued liabilities</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231355" contextRef="i_2022-12-31" unitRef="USD" name="us-gaap:OtherAccruedLiabilitiesCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">826</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#xa0;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"><ix:nonFraction id="c94231356" contextRef="i_2021-12-31" unitRef="USD" name="us-gaap:OtherAccruedLiabilitiesCurrent" scale="3" format="ixt:numdotdecimal" decimals="-3">861</ix:nonFraction></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#xa0;</td>
      </tr>

     </tbody>
    </table>
   </ix:nonNumeric>
  </ix:nonNumeric>
  <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#xa0;</p>
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
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    &#xa0;
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  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item9" title="item9" href="#"></a>ITEM&#xa0;9 - CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">None</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item9a" title="item9a" href="#"></a>ITEM&#xa0;9A - CONTROLS AND PROCEDURES</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Disclosure Controls and Procedures</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Under the supervision and with the participation of our Chief Executive Officer and Principal Financial Officer, our management evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) under the Exchange Act), as of the end of the period covered by this Annual Report on Form 10-K (the &#x201c;Evaluation Date&#x201d;). Based upon that evaluation, our Chief Executive Officer and Principal Financial Officer concluded that, as of the Evaluation Date, our disclosure controls and procedures are effective to ensure that information required to be disclosed in the reports that we file or submit under the Exchange Act is (i)&#xa0;recorded, processed, summarized and reported, within the time periods specified in the Commission&#x2019;s rules and forms and (ii)&#xa0;accumulated and communicated to our management, including our Chief Executive Officer and Principal Financial Officer, as appropriate to allow timely decisions regarding required disclosure.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Change in Internal Controls</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">There has been no change in the Company's internal control over financial reporting during the year&#xa0;covered by this report that has materially affected, or is reasonably likely to materially affect, its internal control over financial reporting.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Management&#x2019;s Report on Internal Control Over Financial Reporting</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rule 13a-15(f) under the Exchange Act. As required by Rule 13a-15(c) under the Exchange Act, our management has carried out an evaluation, with the participation of the Chief Executive Officer and Principal Financial Officer, of the effectiveness of its internal control over financial reporting as of the end of the last fiscal year. The framework on which such evaluation was based is contained in the report entitled &#x201c;Internal Control&#x2014;Integrated Framework&#x201d; issued by the Committee of Sponsoring Organizations of the Treadway Commission (the &#x201c;COSO Report&#x201d;) in 2013.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our system of internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Based on its assessment, management has concluded that we maintained effective internal control over financial reporting as of December 31, 2022, based on criteria in &#x201c;Internal Control - Integrated Framework&#x201d; issued by the COSO in 2013.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item9b" title="item9b" href="#"></a>ITEM&#xa0;9B - OTHER INFORMATION</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>&#xa0;</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">None</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b><a id="part3" title="part3" href="#"></a>PART III&#xa0;</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item10" title="item10" href="#"></a>ITEM&#xa0;10 &#x2013; DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Information required by this Item will be set forth under the captions &#x201c;Election of Directors,&#x201d; &#x201c;Directors and Executive Officers of Fuel Tech,&#x201d; &#x201c;Compensation Committee,&#x201d; &#x201c;Audit Committee,&#x201d; and &#x201c;Financial Experts&#x201d; in our definitive Proxy Statement related to the 2023 Annual Meeting of Stockholders (the &#x201c;Proxy Statement&#x201d;) and is incorporated by reference.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We have adopted a Code of Ethics and Business Conduct (the &#x201c;Code&#x201d;) that applies to all employees, officers and directors, including the Chief Executive Officer and Principal Financial Officer. A copy of the Code is available free of charge to any person on written or telephone request to our Legal Department at the address or telephone number described in Item 1 under the heading "Available Information." The Code is also available on our website at <span style="text-decoration: underline; ">www.ftek.com</span>.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Other information concerning our directors and executive officers and relating to corporate governance will be set forth under the captions &#x201c;Election of Directors,&#x201d; &#x201c;Audit Committee,&#x201d; &#x201c;Compensation and Nominating Committee,&#x201d; &#x201c;Financial Experts,&#x201d; &#x201c;Corporate Governance&#x201d; and &#x201c;General&#x201d; in our Proxy Statement related to the 2023 Annual Meeting of Stockholders and is incorporated by reference.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item11" title="item11" href="#"></a>ITEM&#xa0;11 - EXECUTIVE COMPENSATION</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Information required by this Item will be set forth under the caption &#x201c;Executive Compensation&#x201d; in our definitive Proxy Statement and is incorporated by reference.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item12" title="item12" href="#"></a>ITEM&#xa0;12 - SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table provides information for all equity compensation plans as of the fiscal year ended December 31, 2022, under which our securities were authorized for issuance:</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;">
   <tbody>
    <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 55%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b><span style="text-decoration: underline; ">Plan Category</span></b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Number of Securities to be issued upon exercise of outstanding options and vesting of restricted stock units</b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Weighted-average exercise price of outstanding options</b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Number of securities remaining available for future issuance under equity compensation plan excluding securities listed in column (a)</b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
    </tr>

    <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>(a)</b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>(b)</b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>(c)</b></p> </td>
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#xa0;</td>
    </tr>

    <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
     <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Equity compensation plans approved by security holders</p> </td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">1,151,548</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">2.98</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#xa0;</td>
     <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">1,899,250</td>
     <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#xa0;</td>
    </tr>

   </tbody>
  </table>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">In addition to the plans listed above, we have a Deferred Compensation Plan for directors under which 100,000 shares of common stock have been reserved for issuance as deferred compensation with respect to director's fees.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Further information required by this Item will be set forth under the caption &#x201c;Principal Stockholders and Stock Ownership of Management&#x201d; in the definitive Proxy Statement and is incorporated by reference.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item13" title="item13" href="#"></a>ITEM&#xa0;13 - CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Information required by this Item will be set forth under the captions &#x201c;Compensation Committee Interlocks and Insider Participation&#x201d; and &#x201c;Certain Relationships and Related Transactions&#x201d; in our definitive Proxy Statement and is incorporated by reference.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item14" title="item14" href="#"></a>ITEM&#xa0;14 - PRINCIPAL ACCOUNTANT FEES AND SERVICES</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Information required by this Item will be set forth under the caption &#x201c;Approval of Appointment of Auditors&#x201d; in our definitive Proxy Statement and is incorporated by reference.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#xa0;</p>
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b><a id="part4" title="part4" href="#"></a>PART IV&#xa0;</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><a id="item15" title="item15" href="#"></a>ITEM&#xa0;15 - EXHIBITS AND FINANCIAL STATEMENT SCHEDULES</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
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     <td style="width:18pt;">&#xa0;</td>
     <td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;"><b>(a)</b></p> </td>
     <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;"><b>(1)&#xa0;Financial Statements</b></p> </td>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">The financial statements identified below and required by Part II, Item&#xa0;8 of this Form 10-K are set forth above.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:24pt;">Management&#x2019;s Report on Internal Control Over Financial Reporting</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:24pt;">Report of Independent Registered Public Accounting Firm (PCAOB ID: <ix:nonNumeric name="dei:AuditorFirmId" contextRef="d_2022-01-01_2022-12-31">49</ix:nonNumeric>)</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:24pt;">Consolidated Balance Sheets as of December 31, 2022 and 2021</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:24pt;">Consolidated Statements of Operations for Years Ended December 31, 2022 and 2021</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:24pt;">Consolidated Statements of Comprehensive Loss for Years Ended December 31, 2022 and 2021</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:24pt;">Consolidated Statements of Stockholders&#x2019; Equity for the Years Ended December 31, 2022 and 2021</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:24pt;">Consolidated Statements of Cash Flows for the Years Ended December 31, 2022 and 2021</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:24pt;">Notes to Consolidated Financial Statements</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>&#xa0;</b></p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:24pt;"><b>(2) Financial Statement Schedules</b></p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">All other schedules have been omitted because of the absence of the conditions under which they are required or because the required information, where material, is shown in the financial statements or the notes thereto.</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#xa0;</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: left; text-indent: 24pt;"><b>(3)&#xa0; Exhibits</b>&#xa0;</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <table border="0" cellpadding="0" cellspacing="0" style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;">
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     <td style="vertical-align: bottom; width: 7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 50%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td colspan="7" style="vertical-align: bottom; width: 24%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><b>Incorporated by Reference</b></p> </td>
    </tr>

    <tr>
     <td style="vertical-align: bottom; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><span style="text-decoration: underline; ">Exhibit</span></p> </td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><span style="text-decoration: underline; ">Description</span></p> </td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;border-bottom:solid 1px #000000;;width:7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Filed</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Herewith</p> </td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; border-bottom: 1px solid rgb(0, 0, 0); width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Form</p> </td>
     <td style="vertical-align: bottom; border-bottom: 1px none rgb(0, 0, 0); width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; border-bottom: 1px solid rgb(0, 0, 0); width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Period</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">ending</p> </td>
     <td style="vertical-align: bottom; border-bottom: 1px none rgb(0, 0, 0); width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; border-bottom: 1px solid rgb(0, 0, 0); width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Exhibit</p> </td>
     <td style="vertical-align: bottom; border-bottom: 1px none rgb(0, 0, 0); width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; border-bottom: 1px solid rgb(0, 0, 0); width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">Filing date</p> </td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">3.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000112528206006116/b415089_ex3-2.txt" style="-sec-extract:exhibit;">Certificate of Incorporation of Fuel Tech, Inc.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">8-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">3.2</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10/5/2006</p> </td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">3.2</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000112528206006116/b415089_ex3-1.txt" style="-sec-extract:exhibit;">Certificate of Conversion of Fuel Tech, Inc.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">8-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">3.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10/5/2006</p> </td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">3.3</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000084691315000065/ftek-05x28x2015x8xkexhibit.htm" style="-sec-extract:exhibit;">Amended and Restated By-Laws of Fuel Tech, Inc. dated as of May 28, 2015</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">8-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">3.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">6/1/2015</p> </td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000095012309057807/y80181exv4w1.htm" style="-sec-extract:exhibit;">Instrument Constituting US $19,200,000 Nil Coupon Non-Redeemable Convertible Unsecured Loan Notes of Fuel-Tech N.V., dated December 21, 1989</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10-Q</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">9/30/2009</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">4.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">11/4/2009</p> </td>
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    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.2</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000095012309057807/y80181exv4w2.htm" style="-sec-extract:exhibit;">First Supplemental Instrument Constituting US $3,000 Nil Coupon Non-Redeemable Convertible Unsecured Loan Notes of Fuel-Tech N.V., dated July 10, 1990</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10-Q</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">9/30/2009</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">4.2</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">11/4/2009</p> </td>
    </tr>

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     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.3</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000095012309057807/y80181exv4w3.htm" style="-sec-extract:exhibit;">Instrument Constituting US $6,000 Nil Coupon Non-Redeemable Convertible Unsecured Loan Notes of Fuel-Tech N.V., dated March 12, 1993</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10-Q</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">9/30/2009</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">4.3</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">11/4/2009</p> </td>
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     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.4*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000112528206006061/b415031_ex4-1.txt" style="-sec-extract:exhibit;">Fuel Tech, Inc. Incentive Plan as amended through June 3, 2004</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">S-8</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">4.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10/2/2006</p> </td>
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     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.5*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000084691315000004/s82014incentiveplan.htm" style="-sec-extract:exhibit;">Fuel Tech, Inc. 2014 Long-Term Incentive Plan</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">S-8</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">4.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">3/31/2014</p> </td>
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    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.6*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000114420407011461/v067579_ex4-6.htm" style="-sec-extract:exhibit;">Fuel Tech, Inc. Form of Non-Executive Director Stock Option Agreement</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">12/31/2006</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">4.6</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">3/6/2007</p> </td>
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     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.7</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000084691314000038/ftek-20140630xex42.htm" style="-sec-extract:exhibit;">Fuel Tech, Inc. Form of 2014 Long-Term Incentive Plan Non-Employee Director's Stock Option Agreement</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10-Q</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">6/30/2014</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">4.2</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">8/11/2014</p> </td>
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     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.8*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774921003276/ex_227425.htm" style="-sec-extract:exhibit;">Fuel Tech, Inc. Form of Common Stock Warrant</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">8-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">4.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">2/18/2021</p> </td>
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     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.9*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774921003276/ex_227426.htm" style="-sec-extract:exhibit;">Fuel Tech, Inc. Form of Placement Agent Warrant</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">8-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&#xa0;</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">4.2</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">2/18/2021</p> </td>
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     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.10*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000084691314000038/ftek-20140630xex41.htm" style="-sec-extract:exhibit;">Fuel Tech, Inc. Form of Restricted Stock Unit Agreement (2014 Long-Term Incentive Plan)</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10-Q</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">6/30/2014</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">4.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">8/11/2014</p> </td>
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     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">4.11*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000084691315000048/ftek-20150331xex102eenqsto.htm" style="-sec-extract:exhibit;">Fuel Tech, Inc. Form of 2014 Long-Term Incentive Plan Stock Option Agreement</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:7%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10-Q</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 10%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">3/31/2015</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">10.2</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">5/11/2015</p> </td>
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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     <td style="vertical-align: top; width: 7%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">10.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000095012307001520/y29958exv99w1.txt" style="-sec-extract:exhibit;">Form of Indemnity Agreement between Fuel Tech, Inc. and its Directors and Officers.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 5%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">8-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">99.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">2/7/2007</p> </td>
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     <td style="vertical-align: top; width: 7%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;">10.2*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774921004853/ex_231365.htm" style="-sec-extract:exhibit;">2021&#xa0;Corporate Incentive Plan of Fuel Tech, Inc.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">8-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">10.2</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">3/3/2021</p> </td>
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     <td style="vertical-align: top; width: 7%;">10.3*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774922008679/ex_356566.htm" style="-sec-extract:exhibit;"><span style="background-color:#ffffff;">2022 Corporate Incentive Plan of Fuel Tech, Inc</span></a></td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 7%; text-align: center;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">99.1</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">4/11/2022</td>
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     <td style="vertical-align: top; width: 7%;">10.4*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774923005369/ex_482837.htm" style="-sec-extract:exhibit;"><span style="background-color:#ffffff;">2023&#xa0;Corporate Incentive Plan of Fuel Tech, Inc.</span></a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 7%; text-align: center;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">99.1</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">3/3/2023</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.5*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774922008679/ex_356567.htm" style="-sec-extract:exhibit;"><span style="background-color:#ffffff;">2022 Corporate Objectives Plan of Fuel Tech, Inc</span></a></td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">99.2</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">4/11/2022</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.6*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774923005369/ex_482838.htm" style="-sec-extract:exhibit;"><span style="background-color:#ffffff;">2023 Corporate Objectives Plan of Fuel Tech, Inc</span></a></td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">99.2</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">3/3/2023</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.7*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="margin: 0px; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774920025722/ex_218376.htm">2021 Fuel Tech, Inc. FUEL CHEM Officer Sales Commission Plan</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">99.2</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">12/21/2020</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.8*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774921028535/ex_316314.htm" style="-sec-extract:exhibit;">2022&#xa0;Fuel Tech, Inc. FUEL CHEM Officer Sales Commission Plan</a></td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">99.2</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">12/14/2021</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.9*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774922028909/ex_455124.htm" style="-sec-extract:exhibit;"><span style="background-color:#ffffff;">2023&#xa0;Fuel Tech, Inc. FUEL CHEM Officer Sales Commission Plan</span></a></td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">99.2</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">12/12/2022</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.10*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="margin: 0px; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774920025722/ex_218375.htm">2021 Fuel Tech, Inc. APC Officer and NSM Sales Commission Plan</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">99.1</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">12/21/2020</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.11*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774921028535/ex_316313.htm" style="-sec-extract:exhibit;">2022 Fuel Tech, Inc. APC Officer and NSM Sales Commission Plan</a></td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">99.1</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">12/14/2021</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.12*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774922028909/ex_455123.htm" style="-sec-extract:exhibit;"><span style="background-color:#ffffff;">2023 Fuel Tech, Inc. APC Officer and NSM Sales Commission Plan</span></a></td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">99.1</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">12/12/2022</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;">10.13*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000095012310021077/y83029exv10w10.htm">Employment Agreement dated August 31, 2009, between William E. Cummings, Jr. and Fuel Tech, Inc.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">10-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">12/31/2009</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">10.10</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">3/14/2010</p> </td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;">10.14*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000119312512096880/d309745dex1021.htm">Employment Agreement, dated September 20, 2010 between Vincent J. Arnone and Fuel Tech, Inc.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">10-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">12/31/2011</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">10.21</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">3/5/2012</p> </td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.15*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="margin: 0px; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774921003276/ex_227424.htm">Engagement Letter, dated February 11, 2021, by and between Fuel Tech, Inc. and H.C. Wainwright &amp; Co.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">1.1</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">2/18/2021</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;">10.16*</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774922005551/ex_342111.htm" style="-sec-extract:exhibit;">Employment Agreement, dated July 8, 1996, between Ellen T. Albrecht and Fuel Tech, Inc.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 7%; text-align: center;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">10-K</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">&#xa0;</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">10.13</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">3/8/2022</p> </td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.17*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774921003276/ex_227427.htm">Form of Securities Purchase Agreement</a></td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">10.1</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">2/18/2021</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;">10.18*</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="margin: 0px; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="http://www.sec.gov/Archives/edgar/data/846913/000143774921003276/ex_227428.htm">Form of Registration Rights Agreement</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;">&#xa0;</td>
     <td style="vertical-align: top; width: 19px;">&#xa0;</td>
     <td style="vertical-align: top; width: 83px; text-align: center;">8-K</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:10%;">&#xa0;</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 6%; text-align: center;">10.2</td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 9%; text-align: center;">2/18/2021</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;">23.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="ex_450119.htm" style="-sec-extract:exhibit;">Consent of Independent Registered Public Accounting Firm.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">X</p> </td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 5%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:10%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 6%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 9%;">&#xa0;</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;">31.1</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="ex_450120.htm" style="-sec-extract:exhibit;">Certifications of Chief Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">X</p> </td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 5%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:10%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 6%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 1%;">&#xa0;</td>
     <td style="vertical-align: bottom; width: 9%;">&#xa0;</td>
    </tr>

    <tr>
     <td style="vertical-align: top; width: 7%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;">31.2</p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align: top; width: 50%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="ex_450121.htm" style="-sec-extract:exhibit;">Certifications of principal financial officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.</a></p> </td>
     <td style="vertical-align: top; width: 1%;">&#xa0;</td>
     <td style="vertical-align:top;width:7%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">X</p> </td>
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     <td style="vertical-align: top; width: 7%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;">32</p> </td>
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     <td style="vertical-align: top; width: 50%;"> <p style="font-size: 10pt; margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif;"><a href="ex_450122.htm" style="-sec-extract:exhibit;">Certification of Chief Executive Officer and principal financial officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.</a></p> </td>
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     <td style="vertical-align:top;width:7%;"> <p style="font-size: 10pt; margin: 0pt; text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif;">X</p> </td>
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     <td style="vertical-align: bottom; width: 5%;">&#xa0;</td>
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     <td style="vertical-align:bottom;width:10%;">&#xa0;</td>
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     <td style="vertical-align: bottom; width: 6%;">&#xa0;</td>
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     <td style="vertical-align:top;width:10.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">101.1&#xa0;INS</p> </td>
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     <td style="vertical-align:top;width:89.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Inline XBRL Instance Document.</p> </td>
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     <td style="vertical-align:top;width:10.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">101.2&#xa0;SCH</p> </td>
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     <td style="vertical-align:top;width:89.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Inline XBRL Taxonomy Extension Schema Document.</p> </td>
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     <td style="vertical-align:top;width:10.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">101.3&#xa0;CAL</p> </td>
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     <td style="vertical-align:top;width:89.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Inline XBRL Taxonomy Extension Calculation Linkbase Document.</p> </td>
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     <td style="vertical-align:top;width:10.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">101.4&#xa0;DEF</p> </td>
     <td style="vertical-align:bottom;width:0.8%;">&#xa0;</td>
     <td style="vertical-align:top;width:89.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Inline XBRL Taxonomy Extension Definition Linkbase Document.</p> </td>
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     <td style="vertical-align:top;width:10.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">101.5&#xa0;LAB</p> </td>
     <td style="vertical-align:bottom;width:0.8%;">&#xa0;</td>
     <td style="vertical-align:top;width:89.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Inline XBRL Taxonomy Extension Label Linkbase Document.</p> </td>
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     <td style="vertical-align:top;width:10.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">101.6&#xa0;PRE</p> </td>
     <td style="vertical-align:bottom;width:0.8%;">&#xa0;</td>
     <td style="vertical-align:top;width:89.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Inline XBRL Taxonomy Extension Presentation Linkbase Document.</p> </td>
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     <td style="vertical-align:top;width:10.1%;">104</td>
     <td style="vertical-align:bottom;width:0.8%;">&#xa0;</td>
     <td style="vertical-align:top;width:89.1%;">Cover Page Interactive Data File (embedded within the Inline XBRL and contained in Exhibit 101)</td>
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     <td style="vertical-align: top; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">Indicates a management contract or compensatory plan or arrangement.</td>
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     <td style="width: 36pt; vertical-align: top; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">**</p> </td>
     <td style="vertical-align: top; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; font-size: 10pt; text-align: justify;">Portions of this document have been omitted pursuant to a request for confidential treatment and the omitted information has been filed separately with the Securities and Exchange Commission.</p> </td>
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  <p style="margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b><a id="item16" title="item16" href="#"></a>ITEM 16 - FORM 10-K SUMMARY</b></p>
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  <p style="margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">None.</p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"><b><a id="sigs" title="sigs" href="#"></a>SIGNATURES AND CERTIFICATIONS</b></p>
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  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.</p>
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     <td colspan="2" style="vertical-align:top;width:52.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">FUEL TECH, INC.</p> </td>
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     <td style="vertical-align:bottom;width:47.8%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:4.1%;">&#xa0;</td>
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     <td style="vertical-align:top;width:47.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Date: March 7,&#xa0;2023</p> </td>
     <td style="vertical-align:top;width:4.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">By:</p> </td>
     <td style="vertical-align:top;border-bottom:solid 1px #000000;;width:48%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Vincent J. Arnone</p> </td>
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     <td style="vertical-align:top;width:47.8%;">&#xa0;</td>
     <td style="vertical-align:top;width:4.1%;">&#xa0;</td>
     <td style="vertical-align:top;width:48%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Vincent J. Arnone</p> </td>
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     <td style="vertical-align:top;width:47.8%;">&#xa0;</td>
     <td style="vertical-align:top;width:4.1%;">&#xa0;</td>
     <td style="vertical-align:top;width:48%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">President and Chief Executive Officer</p> </td>
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     <td style="vertical-align:top;width:47.8%;">&#xa0;</td>
     <td style="vertical-align:top;width:4.1%;">&#xa0;</td>
     <td style="vertical-align:top;width:48%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">(Principal Executive Officer)</p> </td>
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     <td style="vertical-align:top;width:47.8%;">Date: March 7,&#xa0;2023</td>
     <td style="vertical-align:top;width:4.1%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">By:</p> </td>
     <td style="vertical-align:top;border-bottom:solid 1px #000000;;width:48%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Ellen T. Albrecht</p> </td>
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     <td style="vertical-align:top;width:47.8%;">&#xa0;</td>
     <td style="vertical-align:top;width:4.1%;">&#xa0;</td>
     <td style="vertical-align:top;width:48%;">Ellen T. Albrecht</td>
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     <td style="vertical-align:top;width:47.8%;">&#xa0;</td>
     <td style="vertical-align:top;width:4.1%;">&#xa0;</td>
     <td style="vertical-align:top;width:48%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Vice President, Chief Financial Officer and Treasurer</p> </td>
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     <td style="vertical-align:top;width:47.8%;">&#xa0;</td>
     <td style="vertical-align:top;width:4.1%;">&#xa0;</td>
     <td style="vertical-align:top;width:48%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">(Principal Financial Officer)</p> </td>
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      <a href="#toc" style="font-weight: initial; font-style: initial; font-variant: initial; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Table of Contents</a>
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  <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#xa0;</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Pursuant to the requirements of the Securities and Exchange Act of 1934, this report has been duly signed below by the following persons on behalf of Fuel Tech, Inc. and in the capacities and on the date indicated.</p>
  <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#xa0;</p>
  <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Date:<span style="background-color:#ffffff;"> March 7,&#xa0;</span>2023</p>
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     <td style="vertical-align:bottom;width:47.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><span style="text-decoration: underline; ">Signature</span></p> </td>
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     <td style="vertical-align:bottom;width:51.4%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><span style="text-decoration: underline; ">Title</span></p> </td>
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     <td style="vertical-align:bottom;width:47.8%;">&#xa0;</td>
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     <td style="vertical-align: bottom; border-bottom: 1px solid rgb(0, 0, 0); width: 47.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Vincent J. Arnone</p> </td>
     <td style="vertical-align:bottom;width:0.8%;">&#xa0;</td>
     <td style="vertical-align:middle;width:51.4%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">President and Chief Executive Officer</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">(Principal Executive Officer)</p> </td>
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     <td style="vertical-align:top;width:47.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Vincent J. Arnone</p> </td>
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     <td style="vertical-align: bottom; width: 47.8%; border-bottom: thin solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Ellen T. Albrecht</p> </td>
     <td style="vertical-align:bottom;width:0.8%;">&#xa0;</td>
     <td style="vertical-align:middle;width:51.4%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Vice President, Chief Financial Officer and Treasurer</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">(Principal Financial Officer)</p> </td>
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     <td style="vertical-align:bottom;border-bottom: 1px #000000;;width:47.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Ellen T. Albrecht</p> </td>
     <td style="vertical-align:bottom;width:0.8%;">&#xa0;</td>
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     <td style="vertical-align:top;border-bottom:solid 1px #000000;;width:47.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Douglas G. Bailey</p> </td>
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     <td style="vertical-align:top;width:51.4%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Director</p> </td>
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     <td style="vertical-align:top;width:47.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Douglas G. Bailey</p> </td>
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     <td style="vertical-align:top;border-bottom:solid 1px #000000;;width:47.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Dennis L. Zeitler</p> </td>
     <td style="vertical-align:bottom;width:0.8%;">&#xa0;</td>
     <td style="vertical-align:middle;width:51.4%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Director</p> </td>
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     <td style="vertical-align:top;width:47.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Dennis L. Zeitler</p> </td>
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     <td style="vertical-align: bottom; width: 47.8%; border-bottom: thin solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Sharon L. Jones</p> </td>
     <td style="vertical-align:bottom;width:0.8%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:51.4%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Director</p> </td>
    </tr>

    <tr>
     <td style="vertical-align:bottom;border-bottom: 1px #000000;;width:47.8%;"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Sharon L. Jones</p> </td>
     <td style="vertical-align:bottom;width:0.8%;">&#xa0;</td>
     <td style="vertical-align:bottom;width:51.4%;">&#xa0;</td>
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<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>2
<FILENAME>ex_450119.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
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<p style="margin: 0pt; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><font style="font-family: 'Times New Roman', Times, serif; font-size: 10pt"><b>Exhibit 23.1</b></font></p>

<p style="margin: 0pt; text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><font style="font-family: 'Times New Roman', Times, serif; font-size: 10pt">&nbsp;</font></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;">CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">We consent to the incorporation by reference in Registration Statements (No. 333-201422 and 333-36390) on Form S-8&nbsp;<meta charset="utf-8"><meta name="format-detection" content="telephone=no"><!--Created on 3/13/2021 10:47:09 AM --><meta name="generator" content="RDG HTML Converter 3.4.3.0">and Registration Statement (No. 333-253619) on Form S-3 of Fuel Tech, Inc. of our report dated March 7, 2023, relating to the consolidated financial statements of Fuel Tech, Inc., appearing in this Annual Report on Form 10-K of Fuel Tech, Inc. for the year ended <a data-tblloc="5x1" data-tblname="103494" data-tblv="19" id="led103494F20210121610487551255">December 31, 2022</a>.</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ RSM US LLP</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Chicago, Illinois</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">March 7, 2023</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

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<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>3
<FILENAME>ex_450120.htm
<DESCRIPTION>EXHIBIT 31.1
<TEXT>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:right;"><b>Exhibit 31.1</b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">I, Vincent J. Arnone, certify that:</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">1. I have reviewed this Annual Report on Form 10-K of Fuel Tech, Inc.;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">4. The registrant&#8217;s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules l3a-15 (e)&nbsp;and 15d-15 (e)&nbsp;and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">c) evaluated the effectiveness of the registrant&#8217;s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">d) disclosed in this report any change in the registrant&#8217;s internal control over financial reporting that occurred during the registrant&#8217;s most recent fiscal quarter (the registrant&#8217;s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant&#8217;s internal control over financial reporting; and</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">5. The registrant&#8217;s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant&#8217;s auditors and the audit committee of registrant&#8217;s board of directors (or persons performing the equivalent functions):</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant&#8217;s ability to record, process, summarize and report financial information; and</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant&#8217;s internal control over financial reporting.</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&nbsp;</p>

<table border="0" cellpadding="0" cellspacing="0" style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;">

		<tr>
			<td colspan="2" style="vertical-align:bottom;width:51.9%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Date: March 7, 2023</p>
			</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:4.1%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:4.1%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">By:</p>
			</td>
			<td style="vertical-align:bottom;border-bottom:solid 1px #000000;;width:47.8%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Vincent J. Arnone</p>
			</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:4.1%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Vincent J. Arnone</p>
			</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:4.1%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Chief Executive Officer</p>
			</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>

</table>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

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<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>4
<FILENAME>ex_450121.htm
<DESCRIPTION>EXHIBIT 31.2
<TEXT>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:right;"><b>Exhibit 31.2</b></p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">I, Ellen T. Albrecht certify that:</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">1. I have reviewed this Annual Report on Form 10-K of Fuel Tech, Inc.;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">4. The registrant&#8217;s other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules l3a-15 (e)&nbsp;and 15d-15 (e)&nbsp;and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">b) designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">c) evaluated the effectiveness of the registrant&#8217;s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">d) disclosed in this report any change in the registrant&#8217;s internal control over financial reporting that occurred during the registrant&#8217;s most recent fiscal quarter (the registrant&#8217;s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant&#8217;s internal control over financial reporting; and</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">5. The registrant&#8217;s other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant&#8217;s auditors and the audit committee of registrant&#8217;s board of directors (or persons performing the equivalent functions):</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant&#8217;s ability to record, process, summarize and report financial information; and</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 36pt; text-align: justify;">b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant&#8217;s internal control over financial reporting.</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&nbsp;</p>

<table border="0" cellpadding="0" cellspacing="0" style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;">

		<tr>
			<td colspan="2" style="vertical-align:bottom;width:51.9%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Date: March 7, 2023</p>
			</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>
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			<td style="vertical-align:bottom;width:4.1%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>
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			<td style="vertical-align:bottom;width:4.1%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">By:</p>
			</td>
			<td style="vertical-align:bottom;border-bottom:solid 1px #000000;;width:47.8%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Ellen T. Albrecht</p>
			</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:4.1%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Ellen T. Albrecht</p>
			</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:4.1%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">Chief Financial Officer and Treasurer</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:4.1%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">(Principal Financial Officer)</td>
			<td style="vertical-align:bottom;width:48%;">&nbsp;</td>
		</tr>

</table>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

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<DOCUMENT>
<TYPE>EX-32
<SEQUENCE>5
<FILENAME>ex_450122.htm
<DESCRIPTION>EXHIBIT 32
<TEXT>
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<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:right;"><b>Exhibit 32</b></p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">The undersigned in their capacities as Chief Executive Officer and Chief Financial Officer of the Registrant do hereby certify that:</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&nbsp;</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;text-indent:24pt;">(i) this report fully complies with the requirements of Section&nbsp;13(a) or 15(d) of the Securities Exchange Act of 1934; and</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-indent: 24pt; text-align: justify;">(ii) information contained in the report fairly presents, in all material respects, the financial condition and results of operations of the Registrant as of, and for, the periods presented in the report.</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&nbsp;</p>

<table border="0" cellpadding="0" cellspacing="0" style="width:100%;text-indent:0;font-family:'Times New Roman', Times, serif;font-size:10pt;">

		<tr>
			<td colspan="2" style="vertical-align:bottom;width:53.1%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Date: March 7, 2023</p>
			</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:5.3%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:5.3%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">By:</p>
			</td>
			<td style="vertical-align:bottom;border-bottom:solid 1px #000000;;width:47.8%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Vincent J. Arnone</p>
			</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:5.3%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Vincent J. Arnone</p>
			</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:5.3%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Chief Executive Officer</p>
			</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:5.3%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td colspan="2" style="vertical-align:bottom;width:53.1%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Date: March 7, 2023</p>
			</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:5.3%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:5.3%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">By:</p>
			</td>
			<td style="vertical-align:bottom;border-bottom:solid 1px #000000;;width:47.8%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">/s/ Ellen T. Albrecht&nbsp;</p>
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			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:5.3%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">Ellen T. Albrecht</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:5.3%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">
			<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Chief Financial Officer and Treasurer</p>
			</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>
		<tr>
			<td style="vertical-align:bottom;width:5.3%;">&nbsp;</td>
			<td style="vertical-align:bottom;width:47.8%;">(Principal Financial Officer)</td>
			<td style="vertical-align:bottom;width:46.9%;">&nbsp;</td>
		</tr>

</table>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Pursuant to Section&nbsp;906 of the Sarbanes-Oxley Act of 2002 (the &#8220;Act&#8221;) this certification accompanies the Report and shall not, except to the extent required by the Act, be deemed filed by the Registrant for purposes of Section&nbsp;18 of the Securities Exchange Act of 1934, as amended.</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&nbsp;</p>

<p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">A signed original of this written statement required by Section&nbsp;906, or other document authenticating, acknowledging or otherwise adopting the signature that appears in typed form within the electronic version of this written statement required by Section&nbsp;906, has been provided to Fuel Tech, Inc. and will be retained by Fuel Tech, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.</p>

<p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&nbsp;</p>

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</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>9
<FILENAME>ftek-20221231_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="US-ASCII" standalone="no"?>
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  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
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    <link:label xlink:label="ftek_DocumentAndEntityInformation-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document And Entity Information</link:label>
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    <link:label xlink:label="ftek_statement-statement-significant-accounting-policies-policies-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Accounting Policies</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xlink:label="us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock" xlink:to="us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-1-organization-and-significant-accounting-policies-tables" xlink:label="ftek_statement-statement-note-1-organization-and-significant-accounting-policies-tables" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-1-organization-and-significant-accounting-policies-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 1 - Organization and Significant Accounting Policies</link:label>
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    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-2-revenue-recognition-tables" xlink:label="ftek_statement-statement-note-2-revenue-recognition-tables" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-2-revenue-recognition-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 2 - Revenue Recognition</link:label>
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    <link:label xlink:label="ftek_statement-statement-note-3-income-taxes-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 3 - Income Taxes</link:label>
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    <link:label xlink:label="ftek_statement-statement-note-7-warrants-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 7 - Warrants</link:label>
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    <link:label xlink:label="ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 12 - Business Segment and Geographic Financial Data</link:label>
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    <link:label xlink:label="us-gaap_IncomeTaxDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Disclosure [Text Block]</link:label>
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    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-14-accrued-liabilities-tables" xlink:label="ftek_statement-statement-note-14-accrued-liabilities-tables" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-14-accrued-liabilities-tables-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 14 - Accrued Liabilities</link:label>
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    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-1-organization-and-significant-accounting-policies-reconciliation-of-cash-cash-equivalents-and-restricted-cash-details" xlink:label="ftek_statement-statement-note-1-organization-and-significant-accounting-policies-reconciliation-of-cash-cash-equivalents-and-restricted-cash-details" xlink:type="locator"/>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-7-warrants-summary-of-warrants-outstanding-and-exercisable-details" xlink:label="ftek_statement-statement-note-7-warrants-summary-of-warrants-outstanding-and-exercisable-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-7-warrants-summary-of-warrants-outstanding-and-exercisable-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 7 - Warrants - Summary of Warrants Outstanding and Exercisable (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-7-warrants-summary-of-warrants-outstanding-and-exercisable-details" xlink:to="ftek_statement-statement-note-7-warrants-summary-of-warrants-outstanding-and-exercisable-details-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vested, restricted stock units, weighted average grant date fair value (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-8-stockbased-compensation-stockbased-compensation-details" xlink:label="ftek_statement-statement-note-8-stockbased-compensation-stockbased-compensation-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-8-stockbased-compensation-stockbased-compensation-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Stock-based Compensation - Stock-based Compensation (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-8-stockbased-compensation-stockbased-compensation-details" xlink:to="ftek_statement-statement-note-8-stockbased-compensation-stockbased-compensation-details-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Forfeited, restricted stock units, weighted average grant date fair value (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-8-stockbased-compensation-stock-option-activity-details" xlink:label="ftek_statement-statement-note-8-stockbased-compensation-stock-option-activity-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-8-stockbased-compensation-stock-option-activity-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Stock-based Compensation - Stock Option Activity (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-8-stockbased-compensation-stock-option-activity-details" xlink:to="ftek_statement-statement-note-8-stockbased-compensation-stock-option-activity-details-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance, unvested restricted stock units, weighted average grant date fair value (in dollars per share)</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance, unvested restricted stock units, weighted average grant date fair value (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-8-stockbased-compensation-summary-of-outstanding-stock-options-by-exercise-price-range-details" xlink:label="ftek_statement-statement-note-8-stockbased-compensation-summary-of-outstanding-stock-options-by-exercise-price-range-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-8-stockbased-compensation-summary-of-outstanding-stock-options-by-exercise-price-range-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Stock-based Compensation - Summary of Outstanding Stock Options by Exercise Price Range (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-8-stockbased-compensation-summary-of-outstanding-stock-options-by-exercise-price-range-details" xlink:to="ftek_statement-statement-note-8-stockbased-compensation-summary-of-outstanding-stock-options-by-exercise-price-range-details-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-8-stockbased-compensation-restricted-stock-activity-details" xlink:label="ftek_statement-statement-note-8-stockbased-compensation-restricted-stock-activity-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-8-stockbased-compensation-restricted-stock-activity-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 8 - Stock-based Compensation - Restricted Stock Activity (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-8-stockbased-compensation-restricted-stock-activity-details" xlink:to="ftek_statement-statement-note-8-stockbased-compensation-restricted-stock-activity-details-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Forfeited, restricted stock units, shares (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-10-leases-operating-lease-expense-details" xlink:label="ftek_statement-statement-note-10-leases-operating-lease-expense-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-10-leases-operating-lease-expense-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 10 - Leases - Operating Lease Expense (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-10-leases-operating-lease-expense-details" xlink:to="ftek_statement-statement-note-10-leases-operating-lease-expense-details-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance, unvested restricted stock units, shares (in shares)</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance, unvested restricted stock units, shares (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-10-leases-remaining-maturities-of-existing-lease-liabilities-details" xlink:label="ftek_statement-statement-note-10-leases-remaining-maturities-of-existing-lease-liabilities-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-10-leases-remaining-maturities-of-existing-lease-liabilities-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 10 - Leases - Remaining Maturities of Existing Lease Liabilities (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-10-leases-remaining-maturities-of-existing-lease-liabilities-details" xlink:to="ftek_statement-statement-note-10-leases-remaining-maturities-of-existing-lease-liabilities-details-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign currency translation adjustments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-10-leases-lease-liabilities-details" xlink:label="ftek_statement-statement-note-10-leases-lease-liabilities-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-10-leases-lease-liabilities-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 10 - Leases - Lease Liabilities (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-10-leases-lease-liabilities-details" xlink:to="ftek_statement-statement-note-10-leases-lease-liabilities-details-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" xlink:label="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maturities of debt securities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities" xlink:to="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-10-leases-supplemental-cash-flow-information-details" xlink:label="ftek_statement-statement-note-10-leases-supplemental-cash-flow-information-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-10-leases-supplemental-cash-flow-information-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 10 - Leases - Supplemental Cash Flow Information (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-10-leases-supplemental-cash-flow-information-details" xlink:to="ftek_statement-statement-note-10-leases-supplemental-cash-flow-information-details-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-reporting-segment-net-sales-and-gross-margin-details" xlink:label="ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-reporting-segment-net-sales-and-gross-margin-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-reporting-segment-net-sales-and-gross-margin-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 12 - Business Segment and Geographic Financial Data - Reporting Segment Net Sales and Gross Margin (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-reporting-segment-net-sales-and-gross-margin-details" xlink:to="ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-reporting-segment-net-sales-and-gross-margin-details-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Granted, unvested restricted stock units, shares (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-geographic-segment-financial-data-details" xlink:label="ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-geographic-segment-financial-data-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-geographic-segment-financial-data-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 12 - Business Segment and Geographic Financial Data - Geographic Segment Financial Data (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-geographic-segment-financial-data-details" xlink:to="ftek_statement-statement-note-12-business-segment-and-geographic-financial-data-geographic-segment-financial-data-details-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Vested, restricted stock units, shares (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-13-restructuring-activities-charges-and-net-assets-details" xlink:label="ftek_statement-statement-note-13-restructuring-activities-charges-and-net-assets-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-13-restructuring-activities-charges-and-net-assets-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 13 - Restructuring Activities - Charges and Net Assets (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-13-restructuring-activities-charges-and-net-assets-details" xlink:to="ftek_statement-statement-note-13-restructuring-activities-charges-and-net-assets-details-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_statement-statement-note-14-accrued-liabilities-components-of-other-accrued-liabilities-details" xlink:label="ftek_statement-statement-note-14-accrued-liabilities-components-of-other-accrued-liabilities-details" xlink:type="locator"/>
    <link:label xlink:label="ftek_statement-statement-note-14-accrued-liabilities-components-of-other-accrued-liabilities-details-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Note 14 - Accrued Liabilities - Components of Other Accrued Liabilities (Details)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_statement-statement-note-14-accrued-liabilities-components-of-other-accrued-liabilities-details" xlink:to="ftek_statement-statement-note-14-accrued-liabilities-components-of-other-accrued-liabilities-details-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_NotesToFinancialStatements" xlink:label="ftek_NotesToFinancialStatements" xlink:type="locator"/>
    <link:label xlink:label="ftek_NotesToFinancialStatements-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes To Financial Statements</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_NotesToFinancialStatements" xlink:to="ftek_NotesToFinancialStatements-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_NotesToFinancialStatementsAbstract" xlink:label="ftek_NotesToFinancialStatementsAbstract" xlink:type="locator"/>
    <link:label xlink:label="ftek_NotesToFinancialStatementsAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes To Financial Statements [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_NotesToFinancialStatementsAbstract" xlink:to="ftek_NotesToFinancialStatementsAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock" xlink:label="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock" xlink:to="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OtherComprehensiveIncomeLossNetOfTax</link:label>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other comprehensive loss</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercisable, option, weighted average exercise price (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted-Average Remaining Contractual Life (years) (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aggregate Intrinsic Value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercisable, options (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquireHeldToMaturitySecurities" xlink:label="us-gaap_PaymentsToAcquireHeldToMaturitySecurities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PaymentsToAcquireHeldToMaturitySecurities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_PaymentsToAcquireHeldToMaturitySecurities</link:label>
    <link:label xlink:label="us-gaap_PaymentsToAcquireHeldToMaturitySecurities-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchases of debt securities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireHeldToMaturitySecurities" xlink:to="us-gaap_PaymentsToAcquireHeldToMaturitySecurities-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding at beginning of year, option, weighted average exercise price (in dollars per share)</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Outstanding at end of year, option, weighted average exercise price (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiabilityCurrent" xlink:label="us-gaap_ContractWithCustomerLiabilityCurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ContractWithCustomerLiabilityCurrent-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Contract liabilities (Note 2)</link:label>
    <link:label xlink:label="us-gaap_ContractWithCustomerLiabilityCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ContractWithCustomerLiabilityCurrent</link:label>
    <link:label xlink:label="us-gaap_ContractWithCustomerLiabilityCurrent-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Current</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerLiabilityCurrent" xlink:to="us-gaap_ContractWithCustomerLiabilityCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expired or forfeited, option, weighted average exercise price (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Granted, option, weighted average exercise price (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercised, option, weighted average exercise price (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EmployeeRelatedLiabilitiesCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee compensation</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeRelatedLiabilitiesCurrent" xlink:to="us-gaap_EmployeeRelatedLiabilitiesCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeasesTextBlock" xlink:label="us-gaap_LesseeOperatingLeasesTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeasesTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Leases [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeasesTextBlock" xlink:to="us-gaap_LesseeOperatingLeasesTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccountsPayableCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableCurrent" xlink:to="us-gaap_AccountsPayableCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares)</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Outstanding at beginning of year, options (in shares)</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Outstanding at end of year, options (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Expired or forfeited, options (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityAxis" xlink:label="us-gaap_CreditFacilityAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CreditFacilityAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Facility [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityAxis" xlink:to="us-gaap_CreditFacilityAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CreditFacilityDomain" xlink:label="us-gaap_CreditFacilityDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CreditFacilityDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Facility [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CreditFacilityDomain" xlink:to="us-gaap_CreditFacilityDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAccruedLiabilitiesCurrent" xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other accrued liabilities</link:label>
    <link:label xlink:label="us-gaap_OtherAccruedLiabilitiesCurrent-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other accrued liabilities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAccruedLiabilitiesCurrent" xlink:to="us-gaap_OtherAccruedLiabilitiesCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PolicyTextBlockAbstract" xlink:label="us-gaap_PolicyTextBlockAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PolicyTextBlockAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_PolicyTextBlockAbstract</link:label>
    <link:label xlink:label="us-gaap_PolicyTextBlockAbstract-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounting Policies</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PolicyTextBlockAbstract" xlink:to="us-gaap_PolicyTextBlockAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProductWarrantyAccrualClassifiedCurrent" xlink:label="us-gaap_ProductWarrantyAccrualClassifiedCurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProductWarrantyAccrualClassifiedCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Warranty reserve (Note 9)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProductWarrantyAccrualClassifiedCurrent" xlink:to="us-gaap_ProductWarrantyAccrualClassifiedCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsToAcquireProductiveAssets" xlink:label="us-gaap_PaymentsToAcquireProductiveAssets" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PaymentsToAcquireProductiveAssets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_PaymentsToAcquireProductiveAssets</link:label>
    <link:label xlink:label="us-gaap_PaymentsToAcquireProductiveAssets-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Purchases of equipment and patents</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsToAcquireProductiveAssets" xlink:to="us-gaap_PaymentsToAcquireProductiveAssets-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unexercised options and unvested restricted stock units (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements" xlink:to="us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:label="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Conversion of unsecured loan notes (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities" xlink:to="us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccruedLiabilitiesCurrentAbstract" xlink:label="us-gaap_AccruedLiabilitiesCurrentAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccruedLiabilitiesCurrentAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued liabilities:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccruedLiabilitiesCurrentAbstract" xlink:to="us-gaap_AccruedLiabilitiesCurrentAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod</link:label>
    <link:label xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted-average number of common shares outstanding:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock" xlink:label="us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock" xlink:to="us-gaap_AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxesPaidNet" xlink:label="us-gaap_IncomeTaxesPaidNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxesPaidNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash income taxes paid (received), net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxesPaidNet" xlink:to="us-gaap_IncomeTaxesPaidNet-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage</link:label>
    <link:label xlink:label="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage" xlink:to="us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationAwardTrancheThreeMember" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheThreeMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationAwardTrancheThreeMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement, Tranche Three [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationAwardTrancheThreeMember" xlink:to="us-gaap_ShareBasedCompensationAwardTrancheThreeMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LossContingencyAccrualAtCarryingValue" xlink:label="us-gaap_LossContingencyAccrualAtCarryingValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LossContingencyAccrualAtCarryingValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LossContingencyAccrualAtCarryingValue</link:label>
    <link:label xlink:label="us-gaap_LossContingencyAccrualAtCarryingValue-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingency Accrual, Ending Balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LossContingencyAccrualAtCarryingValue" xlink:to="us-gaap_LossContingencyAccrualAtCarryingValue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesCurrentAbstract" xlink:label="us-gaap_LiabilitiesCurrentAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LiabilitiesCurrentAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current liabilities:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesCurrentAbstract" xlink:to="us-gaap_LiabilitiesCurrentAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockTextBlock" xlink:label="us-gaap_TreasuryStockTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TreasuryStockTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury Stock [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockTextBlock" xlink:to="us-gaap_TreasuryStockTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VestingAxis" xlink:label="us-gaap_VestingAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_VestingAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vesting [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VestingAxis" xlink:to="us-gaap_VestingAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VestingDomain" xlink:label="us-gaap_VestingDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_VestingDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vesting [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VestingDomain" xlink:to="us-gaap_VestingDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationAwardTrancheOneMember" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationAwardTrancheOneMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement, Tranche One [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationAwardTrancheOneMember" xlink:to="us-gaap_ShareBasedCompensationAwardTrancheOneMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationAwardTrancheTwoMember" xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationAwardTrancheTwoMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement, Tranche Two [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationAwardTrancheTwoMember" xlink:to="us-gaap_ShareBasedCompensationAwardTrancheTwoMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_Assets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_Assets</link:label>
    <link:label xlink:label="us-gaap_Assets-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total assets</link:label>
    <link:label xlink:label="us-gaap_Assets-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Assets" xlink:to="us-gaap_Assets-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SupplementalCashFlowInformationAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental Cash Flow Information:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SupplementalCashFlowInformationAbstract" xlink:to="us-gaap_SupplementalCashFlowInformationAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PatentsMember" xlink:label="us-gaap_PatentsMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PatentsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Patents [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PatentsMember" xlink:to="us-gaap_PatentsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameAxis" xlink:label="us-gaap_PlanNameAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PlanNameAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameAxis" xlink:to="us-gaap_PlanNameAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PlanNameDomain" xlink:label="us-gaap_PlanNameDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PlanNameDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plan Name [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PlanNameDomain" xlink:to="us-gaap_PlanNameDomain-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions</link:label>
    <link:label xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized</link:label>
    <link:label xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1</link:label>
    <link:label xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense</link:label>
    <link:label xlink:label="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement, Expense, Tax Benefit</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense" xlink:to="us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock" xlink:to="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:to="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:to="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock" xlink:to="us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerAssetNet" xlink:label="us-gaap_ContractWithCustomerAssetNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ContractWithCustomerAssetNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ContractWithCustomerAssetNet</link:label>
    <link:label xlink:label="us-gaap_ContractWithCustomerAssetNet-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract with Customer, Asset, after Allowance for Credit Loss, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerAssetNet" xlink:to="us-gaap_ContractWithCustomerAssetNet-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Type [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:to="us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AwardTypeAxis" xlink:label="us-gaap_AwardTypeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AwardTypeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Type [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AwardTypeAxis" xlink:to="us-gaap_AwardTypeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetIncomeLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net loss</link:label>
    <link:label xlink:label="us-gaap_NetIncomeLoss-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net (loss) income</link:label>
    <link:label xlink:label="us-gaap_NetIncomeLoss-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetIncomeLoss" xlink:to="us-gaap_NetIncomeLoss-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization</link:label>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accumulated Amortization</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net Carrying Amount</link:label>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FiniteLivedIntangibleAssetsNet</link:label>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsNet" xlink:to="us-gaap_FiniteLivedIntangibleAssetsNet-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwill-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other intangible assets, net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IntangibleAssetsNetExcludingGoodwill" xlink:to="us-gaap_IntangibleAssetsNetExcludingGoodwill-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StandbyLettersOfCreditMember" xlink:label="us-gaap_StandbyLettersOfCreditMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StandbyLettersOfCreditMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standby Letters of Credit [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StandbyLettersOfCreditMember" xlink:to="us-gaap_StandbyLettersOfCreditMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedStockUnitsRSUMember" xlink:label="us-gaap_RestrictedStockUnitsRSUMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RestrictedStockUnitsRSUMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Stock Units (RSUs) [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedStockUnitsRSUMember" xlink:to="us-gaap_RestrictedStockUnitsRSUMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross Carrying Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsGross" xlink:to="us-gaap_FiniteLivedIntangibleAssetsGross-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedPatentsGross" xlink:label="us-gaap_FiniteLivedPatentsGross" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedPatentsGross-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FiniteLivedPatentsGross</link:label>
    <link:label xlink:label="us-gaap_FiniteLivedPatentsGross-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Patents, Gross</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedPatentsGross" xlink:to="us-gaap_FiniteLivedPatentsGross-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="us-gaap_EmployeeStockOptionMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EmployeeStockOptionMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement, Option [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EmployeeStockOptionMember" xlink:to="us-gaap_EmployeeStockOptionMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesInventoryAxis" xlink:label="us-gaap_PublicUtilitiesInventoryAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PublicUtilitiesInventoryAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesInventoryAxis" xlink:to="us-gaap_PublicUtilitiesInventoryAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:label="us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PublicUtilitiesInventoryTypeDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PublicUtilitiesInventoryTypeDomain" xlink:to="us-gaap_PublicUtilitiesInventoryTypeDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:to="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment</link:label>
    <link:label xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less accumulated depreciation</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PropertyPlantAndEquipmentNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property and equipment, net</link:label>
    <link:label xlink:label="us-gaap_PropertyPlantAndEquipmentNet-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total net book value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentNet" xlink:to="us-gaap_PropertyPlantAndEquipmentNet-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Goodwill" xlink:label="us-gaap_Goodwill" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_Goodwill-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label xlink:label="us-gaap_Goodwill-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill, Ending Balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Goodwill" xlink:to="us-gaap_Goodwill-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_CommonStockOutstandingMember" xlink:label="ftek_CommonStockOutstandingMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_CommonStockOutstandingMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock Outstanding [Member]</link:label>
    <link:label xlink:label="ftek_CommonStockOutstandingMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents common stock outstanding.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_CommonStockOutstandingMember" xlink:to="ftek_CommonStockOutstandingMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="us-gaap_PropertyPlantAndEquipmentGross" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PropertyPlantAndEquipmentGross-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total cost</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentGross" xlink:to="us-gaap_PropertyPlantAndEquipmentGross-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnsecuredDebtMember" xlink:label="us-gaap_UnsecuredDebtMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_UnsecuredDebtMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unsecured Debt [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnsecuredDebtMember" xlink:to="us-gaap_UnsecuredDebtMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="us-gaap_LongtermDebtTypeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LongtermDebtTypeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-Term Debt, Type [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeAxis" xlink:to="us-gaap_LongtermDebtTypeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="us-gaap_LongtermDebtTypeDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LongtermDebtTypeDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-Term Debt, Type [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongtermDebtTypeDomain" xlink:to="us-gaap_LongtermDebtTypeDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Investments" xlink:label="us-gaap_Investments" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_Investments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_Investments</link:label>
    <link:label xlink:label="us-gaap_Investments-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investments, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Investments" xlink:to="us-gaap_Investments-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_PerformanceGuaranteesMember" xlink:label="ftek_PerformanceGuaranteesMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_PerformanceGuaranteesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Performance Guarantees [Member]</link:label>
    <link:label xlink:label="ftek_PerformanceGuaranteesMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents Performance Guarantees.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_PerformanceGuaranteesMember" xlink:to="ftek_PerformanceGuaranteesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">INVESTING ACTIVITIES</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="us-gaap_EarningsPerShareAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EarningsPerShareAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net (loss) income per common share:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareAbstract" xlink:to="us-gaap_EarningsPerShareAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember" xlink:label="ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Warrants Issued in Connection with Private Placement [Member]</link:label>
    <link:label xlink:label="ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents warrants issued in connection with private placement.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember" xlink:to="ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LetterOfCreditMember" xlink:label="us-gaap_LetterOfCreditMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LetterOfCreditMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letter of Credit [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LetterOfCreditMember" xlink:to="us-gaap_LetterOfCreditMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxExpenseBenefit" xlink:label="us-gaap_IncomeTaxExpenseBenefit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_IncomeTaxExpenseBenefit</link:label>
    <link:label xlink:label="us-gaap_IncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income tax expense</link:label>
    <link:label xlink:label="us-gaap_IncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Income tax expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxExpenseBenefit" xlink:to="us-gaap_IncomeTaxExpenseBenefit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInAccruedLiabilities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued liabilities and other non-current liabilities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccruedLiabilities" xlink:to="us-gaap_IncreaseDecreaseInAccruedLiabilities-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_CL" xlink:label="country_CL" xlink:type="locator"/>
    <link:label xlink:label="country_CL-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">CHILE</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_CL" xlink:to="country_CL-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_CN" xlink:label="country_CN" xlink:type="locator"/>
    <link:label xlink:label="country_CN-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">CHINA</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_CN" xlink:to="country_CN-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_OtherAccruedLiabilitiesMember" xlink:label="ftek_OtherAccruedLiabilitiesMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_OtherAccruedLiabilitiesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Accrued Liabilities [Member]</link:label>
    <link:label xlink:label="ftek_OtherAccruedLiabilitiesMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to other accrued liabilities.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_OtherAccruedLiabilitiesMember" xlink:to="ftek_OtherAccruedLiabilitiesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccountsPayable" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_IncreaseDecreaseInAccountsPayable</link:label>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInAccountsPayable-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsPayable" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayable-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent" xlink:label="us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent</link:label>
    <link:label xlink:label="us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Convertible, Carrying Amount of Equity Component</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent" xlink:to="us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DefinedContributionPlanCostRecognized" xlink:label="us-gaap_DefinedContributionPlanCostRecognized" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DefinedContributionPlanCostRecognized-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DefinedContributionPlanCostRecognized</link:label>
    <link:label xlink:label="us-gaap_DefinedContributionPlanCostRecognized-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Defined Contribution Plan, Cost</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DefinedContributionPlanCostRecognized" xlink:to="us-gaap_DefinedContributionPlanCostRecognized-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued" xlink:label="ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued" xlink:type="locator"/>
    <link:label xlink:label="ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Granted (in shares)</link:label>
    <link:label xlink:label="ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Warrant or Right, Number of Warrants Issued (in shares)</link:label>
    <link:label xlink:label="ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents number of warrants issued.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued" xlink:to="ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted cash included in long-term assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restricted cash</link:label>
    <link:label xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted cash included in current assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Within one year, amortized cost</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount" xlink:to="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Within one year, fair value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue" xlink:to="us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Cash" xlink:label="us-gaap_Cash" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_Cash-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash</link:label>
    <link:label xlink:label="us-gaap_Cash-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Cash" xlink:to="us-gaap_Cash-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentDecreaseForgiveness" xlink:label="us-gaap_DebtInstrumentDecreaseForgiveness" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtInstrumentDecreaseForgiveness-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DebtInstrumentDecreaseForgiveness</link:label>
    <link:label xlink:label="us-gaap_DebtInstrumentDecreaseForgiveness-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Decrease, Forgiveness</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentDecreaseForgiveness" xlink:to="us-gaap_DebtInstrumentDecreaseForgiveness-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashEquivalentsAtCarryingValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CashEquivalentsAtCarryingValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash equivalents</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashEquivalentsAtCarryingValue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss" xlink:label="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss</link:label>
    <link:label xlink:label="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Gross unrecognized losses</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss" xlink:to="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain" xlink:label="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gross unrecognized gains</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain" xlink:to="us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DebtInstrumentConvertibleConversionPrice1</link:label>
    <link:label xlink:label="us-gaap_DebtInstrumentConvertibleConversionPrice1-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Convertible, Conversion Price (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleConversionPrice1" xlink:to="us-gaap_DebtInstrumentConvertibleConversionPrice1-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax" xlink:label="us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax</link:label>
    <link:label xlink:label="us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">After-tax effect of stock based compensation</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax" xlink:to="us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllocatedShareBasedCompensationExpense" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AllocatedShareBasedCompensationExpense-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stock options and restricted stock units, net of forfeitures</link:label>
    <link:label xlink:label="us-gaap_AllocatedShareBasedCompensationExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AllocatedShareBasedCompensationExpense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllocatedShareBasedCompensationExpense" xlink:to="us-gaap_AllocatedShareBasedCompensationExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments" xlink:label="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments</link:label>
    <link:label xlink:label="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Convertible, Number of Equity Instruments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments" xlink:to="us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AmendmentFlag" xlink:label="dei_AmendmentFlag" xlink:type="locator"/>
    <link:label xlink:label="dei_AmendmentFlag-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ComprehensiveIncomeNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ComprehensiveIncomeNetOfTax</link:label>
    <link:label xlink:label="us-gaap_ComprehensiveIncomeNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Comprehensive loss</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_ComprehensiveIncomeNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CityAreaCode" xlink:label="dei_CityAreaCode" xlink:type="locator"/>
    <link:label xlink:label="dei_CityAreaCode-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">City Area Code</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UseOfEstimates" xlink:label="us-gaap_UseOfEstimates" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_UseOfEstimates-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Use of Estimates, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UseOfEstimates" xlink:to="us-gaap_UseOfEstimates-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:to="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockSharesAcquired" xlink:label="us-gaap_TreasuryStockSharesAcquired" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TreasuryStockSharesAcquired-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury shares withheld (in shares)</link:label>
    <link:label xlink:label="us-gaap_TreasuryStockSharesAcquired-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Treasury Stock, Shares, Acquired (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockSharesAcquired" xlink:to="us-gaap_TreasuryStockSharesAcquired-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_GainLossOnSaleOfPropertyPlantEquipment</link:label>
    <link:label xlink:label="us-gaap_GainLossOnSaleOfPropertyPlantEquipment-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Loss on sale of equipment</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:to="us-gaap_GainLossOnSaleOfPropertyPlantEquipment-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharesOutstanding" xlink:label="us-gaap_SharesOutstanding" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_SharesOutstanding</link:label>
    <link:label xlink:label="us-gaap_SharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance (in shares)</link:label>
    <link:label xlink:label="us-gaap_SharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesOutstanding" xlink:to="us-gaap_SharesOutstanding-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="us-gaap_CommonStockSharesOutstanding" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockSharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock, shares outstanding (in shares)</link:label>
    <link:label xlink:label="us-gaap_CommonStockSharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Outstanding, Ending Balance (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesOutstanding" xlink:to="us-gaap_CommonStockSharesOutstanding-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_PercentageOfRevenue" xlink:label="ftek_PercentageOfRevenue" xlink:type="locator"/>
    <link:label xlink:label="ftek_PercentageOfRevenue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_PercentageOfRevenue</link:label>
    <link:label xlink:label="ftek_PercentageOfRevenue-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of Revenue</link:label>
    <link:label xlink:label="ftek_PercentageOfRevenue-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents percentage of revenue.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_PercentageOfRevenue" xlink:to="ftek_PercentageOfRevenue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock" xlink:label="us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Receivable, Allowance for Credit Loss [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock" xlink:to="us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_AccumulatedOtherComprehensiveIncomeLossPolicyPolicyTextBlock" xlink:label="ftek_AccumulatedOtherComprehensiveIncomeLossPolicyPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_AccumulatedOtherComprehensiveIncomeLossPolicyPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Other Comprehensive Income (Loss), Policy [Policy Text Block]</link:label>
    <link:label xlink:label="ftek_AccumulatedOtherComprehensiveIncomeLossPolicyPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of accounting policy for accumulated other comprehensive income (loss).</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_AccumulatedOtherComprehensiveIncomeLossPolicyPolicyTextBlock" xlink:to="ftek_AccumulatedOtherComprehensiveIncomeLossPolicyPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_IT" xlink:label="country_IT" xlink:type="locator"/>
    <link:label xlink:label="country_IT-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ITALY</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_IT" xlink:to="country_IT-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_CapitalizedThirdpartyCostsMember" xlink:label="ftek_CapitalizedThirdpartyCostsMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_CapitalizedThirdpartyCostsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capitalized Third-party Costs [Member]</link:label>
    <link:label xlink:label="ftek_CapitalizedThirdpartyCostsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents capitalized third-party costs.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_CapitalizedThirdpartyCostsMember" xlink:to="ftek_CapitalizedThirdpartyCostsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_APCTechnologyMember" xlink:label="ftek_APCTechnologyMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_APCTechnologyMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">APC Technology [Member]</link:label>
    <link:label xlink:label="ftek_APCTechnologyMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents information related to APC technology.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_APCTechnologyMember" xlink:to="ftek_APCTechnologyMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_CurrentFiscalYearEndDate" xlink:label="dei_CurrentFiscalYearEndDate" xlink:type="locator"/>
    <link:label xlink:label="dei_CurrentFiscalYearEndDate-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CurrentFiscalYearEndDate" xlink:to="dei_CurrentFiscalYearEndDate-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_NumberOfUnitsWithApcTechnology" xlink:label="ftek_NumberOfUnitsWithApcTechnology" xlink:type="locator"/>
    <link:label xlink:label="ftek_NumberOfUnitsWithApcTechnology-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_NumberOfUnitsWithApcTechnology</link:label>
    <link:label xlink:label="ftek_NumberOfUnitsWithApcTechnology-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Units with APC Technology</link:label>
    <link:label xlink:label="ftek_NumberOfUnitsWithApcTechnology-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of units with APC Technology</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_NumberOfUnitsWithApcTechnology" xlink:to="ftek_NumberOfUnitsWithApcTechnology-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_COVID19PandemicPolicyTextBlock" xlink:label="ftek_COVID19PandemicPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_COVID19PandemicPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">COVID-19 Pandemic [Policy Text Block]</link:label>
    <link:label xlink:label="ftek_COVID19PandemicPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of accounting policy for COVID-19 pandemic.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_COVID19PandemicPolicyTextBlock" xlink:to="ftek_COVID19PandemicPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DebtInstrumentInterestRateStatedPercentage</link:label>
    <link:label xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:to="us-gaap_DebtInstrumentInterestRateStatedPercentage-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_LiquidityPolicyPolicyTextBlock" xlink:label="ftek_LiquidityPolicyPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_LiquidityPolicyPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liquidity, Policy [Policy Text Block]</link:label>
    <link:label xlink:label="ftek_LiquidityPolicyPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of accounting policy for liquidity.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_LiquidityPolicyPolicyTextBlock" xlink:to="ftek_LiquidityPolicyPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeaseCost" xlink:label="us-gaap_LeaseCost" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LeaseCost-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LeaseCost</link:label>
    <link:label xlink:label="us-gaap_LeaseCost-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total lease cost</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCost" xlink:to="us-gaap_LeaseCost-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ForeignCurrencyRiskManagementPolicyTextBlock" xlink:label="ftek_ForeignCurrencyRiskManagementPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_ForeignCurrencyRiskManagementPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Currency Risk Management [Policy Text Block]</link:label>
    <link:label xlink:label="ftek_ForeignCurrencyRiskManagementPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of the entity's risk management policy for foreign currency exchange rate derivatives.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ForeignCurrencyRiskManagementPolicyTextBlock" xlink:to="ftek_ForeignCurrencyRiskManagementPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock" xlink:label="ftek_PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prepaid Expenses and Other Current Assets [Policy Text Block]</link:label>
    <link:label xlink:label="ftek_PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of accounting policy for prepaid expenses and other current assets.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock" xlink:to="ftek_PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets</link:label>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Prepaid expenses, other current assets and other non-current assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets" xlink:to="us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent</link:label>
    <link:label xlink:label="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Lease, Weighted Average Discount Rate, Percent</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent" xlink:to="us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="dei_DocumentFiscalPeriodFocus" xlink:type="locator"/>
    <link:label xlink:label="dei_DocumentFiscalPeriodFocus-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalPeriodFocus" xlink:to="dei_DocumentFiscalPeriodFocus-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseCost" xlink:label="us-gaap_OperatingLeaseCost" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeaseCost-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating lease cost</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseCost" xlink:to="us-gaap_OperatingLeaseCost-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentFiscalYearFocus" xlink:label="dei_DocumentFiscalYearFocus" xlink:type="locator"/>
    <link:label xlink:label="dei_DocumentFiscalYearFocus-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentFiscalYearFocus" xlink:to="dei_DocumentFiscalYearFocus-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_FuelChemTechnologySegmentMember" xlink:label="ftek_FuelChemTechnologySegmentMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_FuelChemTechnologySegmentMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">FUEL CHEM Technology Segment [Member]</link:label>
    <link:label xlink:label="ftek_FuelChemTechnologySegmentMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents FUEL CHEM technologies segment.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_FuelChemTechnologySegmentMember" xlink:to="ftek_FuelChemTechnologySegmentMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:label="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_IncreaseDecreaseInDeferredIncomeTaxes</link:label>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Deferred Income Taxes</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes" xlink:to="us-gaap_IncreaseDecreaseInDeferredIncomeTaxes-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShortTermLeaseCost" xlink:label="us-gaap_ShortTermLeaseCost" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShortTermLeaseCost-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term lease cost</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermLeaseCost" xlink:to="us-gaap_ShortTermLeaseCost-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LeaseCostTableTextBlock" xlink:label="us-gaap_LeaseCostTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LeaseCostTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease, Cost [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LeaseCostTableTextBlock" xlink:to="us-gaap_LeaseCostTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_AntidilutiveMember" xlink:label="ftek_AntidilutiveMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_AntidilutiveMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Antidilutive [Member]</link:label>
    <link:label xlink:label="ftek_AntidilutiveMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents antidilutive.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_AntidilutiveMember" xlink:to="ftek_AntidilutiveMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentPeriodEndDate" xlink:label="dei_DocumentPeriodEndDate" xlink:type="locator"/>
    <link:label xlink:label="dei_DocumentPeriodEndDate-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_NumberOfMajorCustomers" xlink:label="ftek_NumberOfMajorCustomers" xlink:type="locator"/>
    <link:label xlink:label="ftek_NumberOfMajorCustomers-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_NumberOfMajorCustomers</link:label>
    <link:label xlink:label="ftek_NumberOfMajorCustomers-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Major Customers</link:label>
    <link:label xlink:label="ftek_NumberOfMajorCustomers-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_NumberOfMajorCustomers" xlink:to="ftek_NumberOfMajorCustomers-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leased assets obtained in exchange for operating lease liabilities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability" xlink:to="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1</link:label>
    <link:label xlink:label="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Lease, Weighted Average Remaining Lease Term (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1" xlink:to="us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFileNumber" xlink:label="dei_EntityFileNumber" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityFileNumber-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity File Number</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_OneCustomerMember" xlink:label="ftek_OneCustomerMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_OneCustomerMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">One Customer [Member]</link:label>
    <link:label xlink:label="ftek_OneCustomerMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents one customer.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_OneCustomerMember" xlink:to="ftek_OneCustomerMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityEmergingGrowthCompany" xlink:label="dei_EntityEmergingGrowthCompany" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityEmergingGrowthCompany-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Emerging Growth Company</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="us-gaap_DebtInstrumentFaceAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtInstrumentFaceAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DebtInstrumentFaceAmount</link:label>
    <link:label xlink:label="us-gaap_DebtInstrumentFaceAmount-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Face Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentFaceAmount" xlink:to="us-gaap_DebtInstrumentFaceAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentType" xlink:label="dei_DocumentType" xlink:type="locator"/>
    <link:label xlink:label="dei_DocumentType-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentRepurchaseAmount" xlink:label="us-gaap_DebtInstrumentRepurchaseAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtInstrumentRepurchaseAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DebtInstrumentRepurchaseAmount</link:label>
    <link:label xlink:label="us-gaap_DebtInstrumentRepurchaseAmount-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Repurchase Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentRepurchaseAmount" xlink:to="us-gaap_DebtInstrumentRepurchaseAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_GainsLossesOnExtinguishmentOfDebt</link:label>
    <link:label xlink:label="us-gaap_GainsLossesOnExtinguishmentOfDebt-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Gain of forgiveness on Paycheck Protection Plan Loan</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GainsLossesOnExtinguishmentOfDebt" xlink:to="us-gaap_GainsLossesOnExtinguishmentOfDebt-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterimPeriodCostsNotAllocableDomain" xlink:label="us-gaap_InterimPeriodCostsNotAllocableDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterimPeriodCostsNotAllocableDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interim Period, Costs Not Allocable [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterimPeriodCostsNotAllocableDomain" xlink:to="us-gaap_InterimPeriodCostsNotAllocableDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntitySmallBusiness" xlink:label="dei_EntitySmallBusiness" xlink:type="locator"/>
    <link:label xlink:label="dei_EntitySmallBusiness-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Small Business</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntitySmallBusiness" xlink:to="dei_EntitySmallBusiness-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ThreeCustomersMember" xlink:label="ftek_ThreeCustomersMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_ThreeCustomersMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Three Customers [Member]</link:label>
    <link:label xlink:label="ftek_ThreeCustomersMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents three customers.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ThreeCustomersMember" xlink:to="ftek_ThreeCustomersMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityShellCompany" xlink:label="dei_EntityShellCompany" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityShellCompany-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Shell Company</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityShellCompany" xlink:to="dei_EntityShellCompany-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentInformationLineItems" xlink:label="dei_DocumentInformationLineItems" xlink:type="locator"/>
    <link:label xlink:label="dei_DocumentInformationLineItems-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Information [Line Items]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentInformationLineItems" xlink:to="dei_DocumentInformationLineItems-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentInformationTable" xlink:label="dei_DocumentInformationTable" xlink:type="locator"/>
    <link:label xlink:label="dei_DocumentInformationTable-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Information [Table]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentInformationTable" xlink:to="dei_DocumentInformationTable-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NatureOfExpenseAxis" xlink:label="us-gaap_NatureOfExpenseAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NatureOfExpenseAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nature of Expense [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NatureOfExpenseAxis" xlink:to="us-gaap_NatureOfExpenseAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AreaOfRealEstateProperty" xlink:label="us-gaap_AreaOfRealEstateProperty" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AreaOfRealEstateProperty-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AreaOfRealEstateProperty</link:label>
    <link:label xlink:label="us-gaap_AreaOfRealEstateProperty-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Area of Real Estate Property (Square Foot)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AreaOfRealEstateProperty" xlink:to="us-gaap_AreaOfRealEstateProperty-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityPublicFloat" xlink:label="dei_EntityPublicFloat" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityPublicFloat-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Public Float</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityPublicFloat" xlink:to="dei_EntityPublicFloat-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityFilerCategory" xlink:label="dei_EntityFilerCategory" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityFilerCategory-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFilerCategory" xlink:to="dei_EntityFilerCategory-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentAxis" xlink:label="us-gaap_DebtInstrumentAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtInstrumentAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentAxis" xlink:to="us-gaap_DebtInstrumentAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCurrentReportingStatus" xlink:label="dei_EntityCurrentReportingStatus" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityCurrentReportingStatus-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCurrentReportingStatus" xlink:to="dei_EntityCurrentReportingStatus-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="us-gaap_DebtInstrumentNameDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtInstrumentNameDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtInstrumentNameDomain" xlink:to="us-gaap_DebtInstrumentNameDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestructuringCharges" xlink:label="us-gaap_RestructuringCharges" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RestructuringCharges-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_RestructuringCharges</link:label>
    <link:label xlink:label="us-gaap_RestructuringCharges-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring Charges, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestructuringCharges" xlink:to="us-gaap_RestructuringCharges-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityVoluntaryFilers" xlink:label="dei_EntityVoluntaryFilers" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityVoluntaryFilers-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityVoluntaryFilers" xlink:to="dei_EntityVoluntaryFilers-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="dei_EntityWellKnownSeasonedIssuer" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityWellKnownSeasonedIssuer-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityWellKnownSeasonedIssuer" xlink:to="dei_EntityWellKnownSeasonedIssuer-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillImpairmentLoss" xlink:label="us-gaap_GoodwillImpairmentLoss" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_GoodwillImpairmentLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_GoodwillImpairmentLoss</link:label>
    <link:label xlink:label="us-gaap_GoodwillImpairmentLoss-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill, Impairment Loss</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillImpairmentLoss" xlink:to="us-gaap_GoodwillImpairmentLoss-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskPercentage1" xlink:label="us-gaap_ConcentrationRiskPercentage1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ConcentrationRiskPercentage1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ConcentrationRiskPercentage1</link:label>
    <link:label xlink:label="us-gaap_ConcentrationRiskPercentage1-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Concentration Risk, Percentage</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskPercentage1" xlink:to="us-gaap_ConcentrationRiskPercentage1-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_HeldToMaturitySecuritiesTextBlock" xlink:label="us-gaap_HeldToMaturitySecuritiesTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HeldToMaturitySecuritiesTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Securities, Held-to-Maturity [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HeldToMaturitySecuritiesTextBlock" xlink:to="us-gaap_HeldToMaturitySecuritiesTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_IncreaseDecreaseInAccountsReceivable</link:label>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock compensation expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue" xlink:to="us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:label="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Comprehensive Income [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract" xlink:to="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityTaxIdentificationNumber" xlink:label="dei_EntityTaxIdentificationNumber" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityTaxIdentificationNumber-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Tax Identification Number</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityTaxIdentificationNumber" xlink:to="dei_EntityTaxIdentificationNumber-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCentralIndexKey" xlink:label="dei_EntityCentralIndexKey" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityCentralIndexKey-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange" xlink:label="ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange" xlink:type="locator"/>
    <link:label xlink:label="ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange</link:label>
    <link:label xlink:label="ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Provision charged to expense</link:label>
    <link:label xlink:label="ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of provision for doubtful accounts including foreign impact of foreign exchange.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange" xlink:to="ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityRegistrantName" xlink:label="dei_EntityRegistrantName" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityRegistrantName-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries" xlink:label="ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries" xlink:type="locator"/>
    <link:label xlink:label="ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries</link:label>
    <link:label xlink:label="ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Write-offs / Recoveries</link:label>
    <link:label xlink:label="ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of direct write-downs or recoveries of receivables charged against the allowance for doubtful accounts.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries" xlink:to="ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ScheduleOfExcessAndObsoleteInventoryReserveTableTextBlock" xlink:label="ftek_ScheduleOfExcessAndObsoleteInventoryReserveTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_ScheduleOfExcessAndObsoleteInventoryReserveTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Excess and Obsolete Inventory Reserve [Table Text Block]</link:label>
    <link:label xlink:label="ftek_ScheduleOfExcessAndObsoleteInventoryReserveTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of the amounts of excess and obsolete inventory reserve.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ScheduleOfExcessAndObsoleteInventoryReserveTableTextBlock" xlink:to="ftek_ScheduleOfExcessAndObsoleteInventoryReserveTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_InventoryValuationReserveProvision" xlink:label="ftek_InventoryValuationReserveProvision" xlink:type="locator"/>
    <link:label xlink:label="ftek_InventoryValuationReserveProvision-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision charged to expense</link:label>
    <link:label xlink:label="ftek_InventoryValuationReserveProvision-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of provision charged to inventory valuation reserve.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_InventoryValuationReserveProvision" xlink:to="ftek_InventoryValuationReserveProvision-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityDomain" xlink:label="dei_EntityDomain" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityDomain" xlink:to="dei_EntityDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CustomerConcentrationRiskMember" xlink:label="us-gaap_CustomerConcentrationRiskMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CustomerConcentrationRiskMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer Concentration Risk [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CustomerConcentrationRiskMember" xlink:to="us-gaap_CustomerConcentrationRiskMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LegalEntityAxis" xlink:label="dei_LegalEntityAxis" xlink:type="locator"/>
    <link:label xlink:label="dei_LegalEntityAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LegalEntityAxis" xlink:to="dei_LegalEntityAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressAddressLine1" xlink:label="dei_EntityAddressAddressLine1" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityAddressAddressLine1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, Address Line One</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine1" xlink:to="dei_EntityAddressAddressLine1-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="us-gaap_AmortizationOfIntangibleAssets" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AmortizationOfIntangibleAssets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AmortizationOfIntangibleAssets</link:label>
    <link:label xlink:label="us-gaap_AmortizationOfIntangibleAssets-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of Intangible Assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AmortizationOfIntangibleAssets" xlink:to="us-gaap_AmortizationOfIntangibleAssets-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_TreasuryStockValueAcquiredCostMethod</link:label>
    <link:label xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Treasury Stock, Value, Acquired, Cost Method</link:label>
    <link:label xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Treasury shares withheld</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockValueAcquiredCostMethod" xlink:to="us-gaap_TreasuryStockValueAcquiredCostMethod-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment" xlink:label="ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment" xlink:type="locator"/>
    <link:label xlink:label="ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment</link:label>
    <link:label xlink:label="ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Federal Income Tax Expense (Benefit), Net of Adjustment</link:label>
    <link:label xlink:label="ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations, net of adjustments.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment" xlink:to="ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressCityOrTown" xlink:label="dei_EntityAddressCityOrTown" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityAddressCityOrTown-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, City or Town</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DeferredIncomeTaxExpenseValuationAllowance" xlink:label="ftek_DeferredIncomeTaxExpenseValuationAllowance" xlink:type="locator"/>
    <link:label xlink:label="ftek_DeferredIncomeTaxExpenseValuationAllowance-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_DeferredIncomeTaxExpenseValuationAllowance</link:label>
    <link:label xlink:label="ftek_DeferredIncomeTaxExpenseValuationAllowance-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Income Tax Expense, Valuation Allowance</link:label>
    <link:label xlink:label="ftek_DeferredIncomeTaxExpenseValuationAllowance-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of valuation allowance allocated to deferred income tax expense.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DeferredIncomeTaxExpenseValuationAllowance" xlink:to="ftek_DeferredIncomeTaxExpenseValuationAllowance-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_FuelTechSpAMember" xlink:label="ftek_FuelTechSpAMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_FuelTechSpAMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fuel Tech S.p.A [Member]</link:label>
    <link:label xlink:label="ftek_FuelTechSpAMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to Fuel Tech S.p.A.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_FuelTechSpAMember" xlink:to="ftek_FuelTechSpAMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressPostalZipCode" xlink:label="dei_EntityAddressPostalZipCode" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityAddressPostalZipCode-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, Postal Zip Code</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_BuildingAndLeaseholdImprovementsMember" xlink:label="ftek_BuildingAndLeaseholdImprovementsMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_BuildingAndLeaseholdImprovementsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Building and Leasehold Improvements [Member]</link:label>
    <link:label xlink:label="ftek_BuildingAndLeaseholdImprovementsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to building and leasehold improvements.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_BuildingAndLeaseholdImprovementsMember" xlink:to="ftek_BuildingAndLeaseholdImprovementsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_FieldEquipmentMember" xlink:label="ftek_FieldEquipmentMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_FieldEquipmentMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Field Equipment [Member]</link:label>
    <link:label xlink:label="ftek_FieldEquipmentMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to field equipment.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_FieldEquipmentMember" xlink:to="ftek_FieldEquipmentMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityAddressStateOrProvince" xlink:label="dei_EntityAddressStateOrProvince" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityAddressStateOrProvince-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Address, State or Province</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskByTypeAxis" xlink:label="us-gaap_ConcentrationRiskByTypeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ConcentrationRiskByTypeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskByTypeAxis" xlink:to="us-gaap_ConcentrationRiskByTypeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ComputerEquipmentAndSoftwareMember" xlink:label="ftek_ComputerEquipmentAndSoftwareMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_ComputerEquipmentAndSoftwareMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Computer Equipment and Software [Member]</link:label>
    <link:label xlink:label="ftek_ComputerEquipmentAndSoftwareMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to computer equipment and software.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ComputerEquipmentAndSoftwareMember" xlink:to="ftek_ComputerEquipmentAndSoftwareMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskTypeDomain" xlink:label="us-gaap_ConcentrationRiskTypeDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ConcentrationRiskTypeDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Type [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskTypeDomain" xlink:to="us-gaap_ConcentrationRiskTypeDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockValue" xlink:label="us-gaap_TreasuryStockValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TreasuryStockValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_TreasuryStockValue</link:label>
    <link:label xlink:label="us-gaap_TreasuryStockValue-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Treasury Stock, Value, Total</link:label>
    <link:label xlink:label="us-gaap_TreasuryStockValue-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Treasury stock, at cost (Note 5)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockValue" xlink:to="us-gaap_TreasuryStockValue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AllowanceForDoubtfulAccountsReceivable</link:label>
    <link:label xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Allowance for doubtful accounts</link:label>
    <link:label xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at January 1</link:label>
    <link:label xlink:label="us-gaap_AllowanceForDoubtfulAccountsReceivable-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at December 31</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllowanceForDoubtfulAccountsReceivable" xlink:to="us-gaap_AllowanceForDoubtfulAccountsReceivable-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent" xlink:label="ftek_EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent" xlink:type="locator"/>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">China enterprise tax</link:label>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to China Enterprise Tax.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent" xlink:to="ftek_EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DeferredTaxAssetsGoodwill" xlink:label="ftek_DeferredTaxAssetsGoodwill" xlink:type="locator"/>
    <link:label xlink:label="ftek_DeferredTaxAssetsGoodwill-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_DeferredTaxAssetsGoodwill</link:label>
    <link:label xlink:label="ftek_DeferredTaxAssetsGoodwill-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Goodwill</link:label>
    <link:label xlink:label="ftek_DeferredTaxAssetsGoodwill-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from goodwill.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DeferredTaxAssetsGoodwill" xlink:to="ftek_DeferredTaxAssetsGoodwill-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals" xlink:label="ftek_DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals" xlink:type="locator"/>
    <link:label xlink:label="ftek_DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Royalty accruals</link:label>
    <link:label xlink:label="ftek_DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from royalty accruals.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals" xlink:to="ftek_DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="dei_EntityCommonStockSharesOutstanding" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityCommonStockSharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCommonStockSharesOutstanding" xlink:to="dei_EntityCommonStockSharesOutstanding-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DueFromCustomerAcceptances" xlink:label="us-gaap_DueFromCustomerAcceptances" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DueFromCustomerAcceptances-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DueFromCustomerAcceptances</link:label>
    <link:label xlink:label="us-gaap_DueFromCustomerAcceptances-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due from Customer Acceptances</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DueFromCustomerAcceptances" xlink:to="us-gaap_DueFromCustomerAcceptances-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent" xlink:label="ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent" xlink:type="locator"/>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent</link:label>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Other true up</link:label>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other true up adjustments.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent" xlink:to="ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent" xlink:label="ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent" xlink:type="locator"/>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent</link:label>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Intangible assets impairment and other non-deductibles</link:label>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to impairment losses and other nondeductible expenses.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent" xlink:to="ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember" xlink:label="ftek_ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reserved For Issuance Upon Exercise Or Vesting Of Equity Awards [Member]</link:label>
    <link:label xlink:label="ftek_ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to stock reserved for issuance upon exercise or vesting of equity awards.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember" xlink:to="ftek_ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember" xlink:label="ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">NIL Coupon Non-redeemable Convertible Unsecured Loan Notes [Member]</link:label>
    <link:label xlink:label="ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to nil coupon non-redeemable convertible unsecured loan notes.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember" xlink:to="ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SalesRevenueNetMember" xlink:label="us-gaap_SalesRevenueNetMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SalesRevenueNetMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue Benchmark [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SalesRevenueNetMember" xlink:to="us-gaap_SalesRevenueNetMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DeferredTaxAssetsInventoryReserve" xlink:label="ftek_DeferredTaxAssetsInventoryReserve" xlink:type="locator"/>
    <link:label xlink:label="ftek_DeferredTaxAssetsInventoryReserve-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory reserve</link:label>
    <link:label xlink:label="ftek_DeferredTaxAssetsInventoryReserve-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory reserve.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DeferredTaxAssetsInventoryReserve" xlink:to="ftek_DeferredTaxAssetsInventoryReserve-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DeferredTaxAssetsDepreciation" xlink:label="ftek_DeferredTaxAssetsDepreciation" xlink:type="locator"/>
    <link:label xlink:label="ftek_DeferredTaxAssetsDepreciation-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_DeferredTaxAssetsDepreciation</link:label>
    <link:label xlink:label="ftek_DeferredTaxAssetsDepreciation-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation</link:label>
    <link:label xlink:label="ftek_DeferredTaxAssetsDepreciation-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from depreciation.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DeferredTaxAssetsDepreciation" xlink:to="ftek_DeferredTaxAssetsDepreciation-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_NetDeferredTaxAssetBeforeValuationAllowance" xlink:label="ftek_NetDeferredTaxAssetBeforeValuationAllowance" xlink:type="locator"/>
    <link:label xlink:label="ftek_NetDeferredTaxAssetBeforeValuationAllowance-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_NetDeferredTaxAssetBeforeValuationAllowance</link:label>
    <link:label xlink:label="ftek_NetDeferredTaxAssetBeforeValuationAllowance-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net deferred tax asset before valuation allowance</link:label>
    <link:label xlink:label="ftek_NetDeferredTaxAssetBeforeValuationAllowance-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Net deferred tax asset before valuation allowance.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_NetDeferredTaxAssetBeforeValuationAllowance" xlink:to="ftek_NetDeferredTaxAssetBeforeValuationAllowance-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses" xlink:label="ftek_ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses" xlink:type="locator"/>
    <link:label xlink:label="ftek_ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Charged to costs and expenses</link:label>
    <link:label xlink:label="ftek_ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The amount of change in valuation allowance deferred tax asset charged to costs and expenses.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses" xlink:to="ftek_ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="us-gaap_IncreaseDecreaseInInventories" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInInventories-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_IncreaseDecreaseInInventories</link:label>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInInventories-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Inventories</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInInventories" xlink:to="us-gaap_IncreaseDecreaseInInventories-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_TradingSymbol" xlink:label="dei_TradingSymbol" xlink:type="locator"/>
    <link:label xlink:label="dei_TradingSymbol-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trading Symbol</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_RangeOneMember" xlink:label="ftek_RangeOneMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_RangeOneMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range One [Member]</link:label>
    <link:label xlink:label="ftek_RangeOneMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents range one.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_RangeOneMember" xlink:to="ftek_RangeOneMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_RangeTwoMember" xlink:label="ftek_RangeTwoMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_RangeTwoMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range Two [Member]</link:label>
    <link:label xlink:label="ftek_RangeTwoMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents range two.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_RangeTwoMember" xlink:to="ftek_RangeTwoMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:label="us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ConcentrationRiskByBenchmarkAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskByBenchmarkAxis" xlink:to="us-gaap_ConcentrationRiskByBenchmarkAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskBenchmarkDomain" xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ConcentrationRiskBenchmarkDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk Benchmark [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskBenchmarkDomain" xlink:to="us-gaap_ConcentrationRiskBenchmarkDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_RangeThreeMember" xlink:label="ftek_RangeThreeMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_RangeThreeMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range Three [Member]</link:label>
    <link:label xlink:label="ftek_RangeThreeMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents range three.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_RangeThreeMember" xlink:to="ftek_RangeThreeMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_RangeFourMember" xlink:label="ftek_RangeFourMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_RangeFourMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range Four [Member]</link:label>
    <link:label xlink:label="ftek_RangeFourMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents range four.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_RangeFourMember" xlink:to="ftek_RangeFourMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_LocalPhoneNumber" xlink:label="dei_LocalPhoneNumber" xlink:type="locator"/>
    <link:label xlink:label="dei_LocalPhoneNumber-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Local Phone Number</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_CashCollateralSecurityAgreementMember" xlink:label="ftek_CashCollateralSecurityAgreementMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_CashCollateralSecurityAgreementMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash Collateral Security Agreement [Member]</link:label>
    <link:label xlink:label="ftek_CashCollateralSecurityAgreementMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents Cash Collateral Security Agreement.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_CashCollateralSecurityAgreementMember" xlink:to="ftek_CashCollateralSecurityAgreementMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock" xlink:to="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureAndSignificantAccountingPoliciesTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_AdditionalNumberOfLeases" xlink:label="ftek_AdditionalNumberOfLeases" xlink:type="locator"/>
    <link:label xlink:label="ftek_AdditionalNumberOfLeases-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_AdditionalNumberOfLeases</link:label>
    <link:label xlink:label="ftek_AdditionalNumberOfLeases-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional Number of Leases</link:label>
    <link:label xlink:label="ftek_AdditionalNumberOfLeases-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Additional Number Of Leases</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_AdditionalNumberOfLeases" xlink:to="ftek_AdditionalNumberOfLeases-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised</link:label>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Exercised, options (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:to="us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TableTextBlock" xlink:label="us-gaap_TableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_TableTextBlock</link:label>
    <link:label xlink:label="us-gaap_TableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes Tables</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TableTextBlock" xlink:to="us-gaap_TableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock issued upon vesting of restricted stock units (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross" xlink:to="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_GallarateItalyMember" xlink:label="ftek_GallarateItalyMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_GallarateItalyMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gallarate Italy [Member]</link:label>
    <link:label xlink:label="ftek_GallarateItalyMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents Gallarate Italy.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_GallarateItalyMember" xlink:to="ftek_GallarateItalyMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_FourCustomersMember" xlink:label="ftek_FourCustomersMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_FourCustomersMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Four Customers [Member]</link:label>
    <link:label xlink:label="ftek_FourCustomersMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to four customers.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_FourCustomersMember" xlink:to="ftek_FourCustomersMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised</link:label>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Stock Options Exercised</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised" xlink:to="us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_AuroraIllinoisMember" xlink:label="ftek_AuroraIllinoisMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_AuroraIllinoisMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aurora Illinois [Member]]</link:label>
    <link:label xlink:label="ftek_AuroraIllinoisMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents Aurora Illinois.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_AuroraIllinoisMember" xlink:to="ftek_AuroraIllinoisMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock issued upon vesting of restricted stock units</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross" xlink:to="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent" xlink:label="ftek_EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent" xlink:type="locator"/>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">PPP Loan Forgiveness</link:label>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to debt forgiveness.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent" xlink:to="ftek_EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SellingGeneralAndAdministrativeExpense" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Selling, general and administrative</link:label>
    <link:label xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Selling, general and administrative</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SellingGeneralAndAdministrativeExpense" xlink:to="us-gaap_SellingGeneralAndAdministrativeExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent" xlink:label="ftek_EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent" xlink:type="locator"/>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrual to return</link:label>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to accrual to return.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent" xlink:to="ftek_EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="us-gaap_ProvisionForDoubtfulAccounts" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProvisionForDoubtfulAccounts-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision for doubtful accounts, net of recoveries</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProvisionForDoubtfulAccounts" xlink:to="us-gaap_ProvisionForDoubtfulAccounts-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_PrivatePlacementOfferingPolicyTextBlock" xlink:label="ftek_PrivatePlacementOfferingPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_PrivatePlacementOfferingPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Private Placement Offering [Policy Text Block]</link:label>
    <link:label xlink:label="ftek_PrivatePlacementOfferingPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Disclosure of accounting policy for private placement offering.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_PrivatePlacementOfferingPolicyTextBlock" xlink:to="ftek_PrivatePlacementOfferingPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Granted, options (in shares)</link:label>
    <link:label xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross" xlink:to="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WarrantsAndRightsOutstandingMeasurementInput" xlink:label="us-gaap_WarrantsAndRightsOutstandingMeasurementInput" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_WarrantsAndRightsOutstandingMeasurementInput-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_WarrantsAndRightsOutstandingMeasurementInput</link:label>
    <link:label xlink:label="us-gaap_WarrantsAndRightsOutstandingMeasurementInput-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warrants and Rights Outstanding, Measurement Input</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantsAndRightsOutstandingMeasurementInput" xlink:to="us-gaap_WarrantsAndRightsOutstandingMeasurementInput-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WarrantsAndRightsOutstandingTerm" xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_WarrantsAndRightsOutstandingTerm</link:label>
    <link:label xlink:label="us-gaap_WarrantsAndRightsOutstandingTerm-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Warrants and Rights Outstanding, Term (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WarrantsAndRightsOutstandingTerm" xlink:to="us-gaap_WarrantsAndRightsOutstandingTerm-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_EquipmentContstructedForResaleMember" xlink:label="ftek_EquipmentContstructedForResaleMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_EquipmentContstructedForResaleMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equipment Contstructed for Resale [Member]</link:label>
    <link:label xlink:label="ftek_EquipmentContstructedForResaleMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to equipment constructed for resale.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_EquipmentContstructedForResaleMember" xlink:to="ftek_EquipmentContstructedForResaleMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent" xlink:label="ftek_EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent" xlink:type="locator"/>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Chile outside basis differential</link:label>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to outside basis differential.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent" xlink:to="ftek_EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock issued in connection with private placement, net (in shares)</link:label>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, New Issues (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodSharesNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodSharesNewIssues-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent" xlink:label="ftek_EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent" xlink:type="locator"/>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">China deferred adjustment</link:label>
    <link:label xlink:label="ftek_EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign deferred adjustment.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent" xlink:to="ftek_EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestrictedCashAndInvestments" xlink:label="us-gaap_RestrictedCashAndInvestments" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RestrictedCashAndInvestments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_RestrictedCashAndInvestments</link:label>
    <link:label xlink:label="us-gaap_RestrictedCashAndInvestments-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted Cash and Investments, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestrictedCashAndInvestments" xlink:to="us-gaap_RestrictedCashAndInvestments-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_HeldToMaturitySecuritiesFairValue" xlink:label="us-gaap_HeldToMaturitySecuritiesFairValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_HeldToMaturitySecuritiesFairValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair value</link:label>
    <link:label xlink:label="us-gaap_HeldToMaturitySecuritiesFairValue-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Fair value</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_HeldToMaturitySecuritiesFairValue" xlink:to="us-gaap_HeldToMaturitySecuritiesFairValue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LiabilitiesAndStockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LiabilitiesAndStockholdersEquity</link:label>
    <link:label xlink:label="us-gaap_LiabilitiesAndStockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities and stockholders&#8217; equity</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesAndStockholdersEquity-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock issued in connection with private placement, net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockIssuedDuringPeriodValueNewIssues" xlink:to="us-gaap_StockIssuedDuringPeriodValueNewIssues-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/country/2022/country-2022.xsd#country_US" xlink:label="country_US" xlink:type="locator"/>
    <link:label xlink:label="country_US-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">UNITED STATES</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="country_US" xlink:to="country_US-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetPledgedAsCollateralMember" xlink:label="us-gaap_AssetPledgedAsCollateralMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AssetPledgedAsCollateralMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Pledged as Collateral [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetPledgedAsCollateralMember" xlink:to="us-gaap_AssetPledgedAsCollateralMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ResearchAndDevelopmentExpense" xlink:label="us-gaap_ResearchAndDevelopmentExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ResearchAndDevelopmentExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Research and development</link:label>
    <link:label xlink:label="us-gaap_ResearchAndDevelopmentExpense-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Research and development</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpense" xlink:to="us-gaap_ResearchAndDevelopmentExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated deficit</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsAccumulatedDeficit" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated other comprehensive loss</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="us-gaap_DebtDisclosureTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DebtDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Disclosure [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DebtDisclosureTextBlock" xlink:to="us-gaap_DebtDisclosureTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestExpense" xlink:label="us-gaap_InterestExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestExpense</link:label>
    <link:label xlink:label="us-gaap_InterestExpense-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Interest expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestExpense" xlink:to="us-gaap_InterestExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputPriceVolatilityMember" xlink:label="us-gaap_MeasurementInputPriceVolatilityMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MeasurementInputPriceVolatilityMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Price Volatility [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputPriceVolatilityMember" xlink:to="us-gaap_MeasurementInputPriceVolatilityMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Changes in operating assets and liabilities:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:to="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputRiskFreeInterestRateMember" xlink:label="us-gaap_MeasurementInputRiskFreeInterestRateMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MeasurementInputRiskFreeInterestRateMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Risk Free Interest Rate [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputRiskFreeInterestRateMember" xlink:to="us-gaap_MeasurementInputRiskFreeInterestRateMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisclosureTextBlockAbstract" xlink:label="us-gaap_DisclosureTextBlockAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DisclosureTextBlockAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DisclosureTextBlockAbstract</link:label>
    <link:label xlink:label="us-gaap_DisclosureTextBlockAbstract-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes to Financial Statements</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisclosureTextBlockAbstract" xlink:to="us-gaap_DisclosureTextBlockAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock" xlink:label="us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Cash and Cash Equivalents [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock" xlink:to="us-gaap_ScheduleOfCashAndCashEquivalentsTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeaseLiabilityNoncurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating lease liabilities - non-current</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityNoncurrent" xlink:to="us-gaap_OperatingLeaseLiabilityNoncurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputExpectedTermMember" xlink:label="us-gaap_MeasurementInputExpectedTermMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MeasurementInputExpectedTermMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input, Expected Term [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputExpectedTermMember" xlink:to="us-gaap_MeasurementInputExpectedTermMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiability" xlink:label="us-gaap_OperatingLeaseLiability" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeaseLiability-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label xlink:label="us-gaap_OperatingLeaseLiability-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total operating lease liabilities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiability" xlink:to="us-gaap_OperatingLeaseLiability-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:label="us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredIncomeTaxesAndTaxCredits-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Deferred income taxes</link:label>
    <link:label xlink:label="us-gaap_DeferredIncomeTaxesAndTaxCredits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredIncomeTaxesAndTaxCredits</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxesAndTaxCredits" xlink:to="us-gaap_DeferredIncomeTaxesAndTaxCredits-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseLiabilityCurrent" xlink:label="us-gaap_OperatingLeaseLiabilityCurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeaseLiabilityCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating lease liabilities - current</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseLiabilityCurrent" xlink:to="us-gaap_OperatingLeaseLiabilityCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeaseRightOfUseAsset" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeaseRightOfUseAsset-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Right-of-use operating lease assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeaseRightOfUseAsset" xlink:to="us-gaap_OperatingLeaseRightOfUseAsset-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total lease payments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less imputed interest</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredIncomeTaxExpenseBenefit</link:label>
    <link:label xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Total deferred</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputTypeAxis" xlink:label="us-gaap_MeasurementInputTypeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MeasurementInputTypeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input Type [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputTypeAxis" xlink:to="us-gaap_MeasurementInputTypeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive</link:label>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2025</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MeasurementInputTypeDomain" xlink:label="us-gaap_MeasurementInputTypeDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MeasurementInputTypeDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Measurement Input Type [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MeasurementInputTypeDomain" xlink:to="us-gaap_MeasurementInputTypeDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense</link:label>
    <link:label xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Compensation Arrangement with Individual, Compensation Expense</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FairValueMeasurementPolicyPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair Value Measurement, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FairValueMeasurementPolicyPolicyTextBlock" xlink:to="us-gaap_FairValueMeasurementPolicyPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo</link:label>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2024</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree</link:label>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2025</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour</link:label>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2026</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive</link:label>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2027</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2024</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock" xlink:to="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths</link:label>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:to="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_StandardProductWarrantyPeriod" xlink:label="ftek_StandardProductWarrantyPeriod" xlink:type="locator"/>
    <link:label xlink:label="ftek_StandardProductWarrantyPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_StandardProductWarrantyPeriod</link:label>
    <link:label xlink:label="ftek_StandardProductWarrantyPeriod-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Standard Product Warranty Period (Year)</link:label>
    <link:label xlink:label="ftek_StandardProductWarrantyPeriod-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents standard product warranty period.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_StandardProductWarrantyPeriod" xlink:to="ftek_StandardProductWarrantyPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_OverlandParkMember" xlink:label="ftek_OverlandParkMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_OverlandParkMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Overland Park [Member]</link:label>
    <link:label xlink:label="ftek_OverlandParkMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents Overland Park.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_OverlandParkMember" xlink:to="ftek_OverlandParkMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Currency Transactions and Translations Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock" xlink:to="us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Liability, Maturity [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock" xlink:to="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensation-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock-based compensation, net of forfeitures</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensation" xlink:to="us-gaap_ShareBasedCompensation-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherAssetsNoncurrent" xlink:label="us-gaap_OtherAssetsNoncurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherAssetsNoncurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherAssetsNoncurrent" xlink:to="us-gaap_OtherAssetsNoncurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeLeasesPolicyTextBlock" xlink:label="us-gaap_LesseeLeasesPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeLeasesPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Leases [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeLeasesPolicyTextBlock" xlink:to="us-gaap_LesseeLeasesPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:label="us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_FiniteLivedIntangibleAssetUsefulLife-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization Period (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_FiniteLivedIntangibleAssetUsefulLife" xlink:to="us-gaap_FiniteLivedIntangibleAssetUsefulLife-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerSharePolicyTextBlock" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EarningsPerSharePolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerSharePolicyTextBlock" xlink:to="us-gaap_EarningsPerSharePolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_Revenues-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_Revenues</link:label>
    <link:label xlink:label="us-gaap_Revenues-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenues, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Revenues" xlink:to="us-gaap_Revenues-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentForAmortization" xlink:label="us-gaap_AdjustmentForAmortization" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AdjustmentForAmortization-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentForAmortization" xlink:to="us-gaap_AdjustmentForAmortization-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="us-gaap_IncomeTaxPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxPolicyTextBlock" xlink:to="us-gaap_IncomeTaxPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:to="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis" xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Bonus and Profit Sharing Arrangements, Individual Contracts, Type of Deferred Compensation [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis" xlink:to="us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain" xlink:label="us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Bonus and Profit Sharing Arrangement, Individual Contract, Type of Deferred Compensation [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain" xlink:to="us-gaap_DeferredBonusAndProfitSharingArrangementIndividualContractTypeOfDeferredCompensationDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ResearchAndDevelopmentExpensePolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Research and Development Expense, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResearchAndDevelopmentExpensePolicy" xlink:to="us-gaap_ResearchAndDevelopmentExpensePolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LongTermInvestments" xlink:label="us-gaap_LongTermInvestments" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LongTermInvestments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term investments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LongTermInvestments" xlink:to="us-gaap_LongTermInvestments-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Depreciation" xlink:label="us-gaap_Depreciation" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_Depreciation-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation</link:label>
    <link:label xlink:label="us-gaap_Depreciation-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Depreciation" xlink:to="us-gaap_Depreciation-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharesIssuedPricePerShare" xlink:label="us-gaap_SharesIssuedPricePerShare" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SharesIssuedPricePerShare-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_SharesIssuedPricePerShare</link:label>
    <link:label xlink:label="us-gaap_SharesIssuedPricePerShare-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Shares Issued, Price Per Share (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharesIssuedPricePerShare" xlink:to="us-gaap_SharesIssuedPricePerShare-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AssetsCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AssetsCurrent</link:label>
    <link:label xlink:label="us-gaap_AssetsCurrent-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total current assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsCurrent" xlink:to="us-gaap_AssetsCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-Based Payment Arrangement [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy" xlink:to="us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Note Disclosure [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:to="us-gaap_StockholdersEquityNoteDisclosureTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy" xlink:label="us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pension and Other Postretirement Plans, Nonpension Benefits, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy" xlink:to="us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InterestAndDividendIncomeSecuritiesHeldToMaturity" xlink:label="us-gaap_InterestAndDividendIncomeSecuritiesHeldToMaturity" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InterestAndDividendIncomeSecuritiesHeldToMaturity-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InterestAndDividendIncomeSecuritiesHeldToMaturity</link:label>
    <link:label xlink:label="us-gaap_InterestAndDividendIncomeSecuritiesHeldToMaturity-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Non-cash interest income on held-to-maturity securities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InterestAndDividendIncomeSecuritiesHeldToMaturity" xlink:to="us-gaap_InterestAndDividendIncomeSecuritiesHeldToMaturity-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockShares" xlink:label="us-gaap_TreasuryStockShares" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TreasuryStockShares-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_TreasuryStockShares</link:label>
    <link:label xlink:label="us-gaap_TreasuryStockShares-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Treasury Stock, Shares, Total (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockShares" xlink:to="us-gaap_TreasuryStockShares-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AssetsNet" xlink:label="us-gaap_AssetsNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AssetsNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AssetsNet</link:label>
    <link:label xlink:label="us-gaap_AssetsNet-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total net assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AssetsNet" xlink:to="us-gaap_AssetsNet-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Selling, General and Administrative Expenses, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock" xlink:to="us-gaap_SellingGeneralAndAdministrativeExpensesPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockValue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock, $.01 par value, 40,000,000 shares authorized, 31,272,303 and 31,227,300 shares issued, and 30,296,297 and 30,263,791 shares outstanding in 2022 and 2021, respectively</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockValue" xlink:to="us-gaap_CommonStockValue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="us-gaap_CommonStockSharesAuthorized" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockSharesAuthorized-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock, shares authorized (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesAuthorized" xlink:to="us-gaap_CommonStockSharesAuthorized-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_AmericasMember" xlink:label="srt_AmericasMember" xlink:type="locator"/>
    <link:label xlink:label="srt_AmericasMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Americas [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_AmericasMember" xlink:to="srt_AmericasMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockSharesIssued" xlink:label="us-gaap_CommonStockSharesIssued" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockSharesIssued-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock, shares issued (in shares)</link:label>
    <link:label xlink:label="us-gaap_CommonStockSharesIssued-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Issued (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockSharesIssued" xlink:to="us-gaap_CommonStockSharesIssued-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockParOrStatedValuePerShare-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common stock, par value (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockParOrStatedValuePerShare" xlink:to="us-gaap_CommonStockParOrStatedValuePerShare-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquityPolicyTextBlock" xlink:label="us-gaap_StockholdersEquityPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockholdersEquityPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquityPolicyTextBlock" xlink:to="us-gaap_StockholdersEquityPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">(Deductions)/Other</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount" xlink:to="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_AsiaMember" xlink:label="srt_AsiaMember" xlink:type="locator"/>
    <link:label xlink:label="srt_AsiaMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asia [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_AsiaMember" xlink:to="srt_AsiaMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StandardProductWarrantyPolicy" xlink:label="us-gaap_StandardProductWarrantyPolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StandardProductWarrantyPolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Standard Product Warranty, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StandardProductWarrantyPolicy" xlink:to="us-gaap_StandardProductWarrantyPolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CommonStockCapitalSharesReservedForFutureIssuance</link:label>
    <link:label xlink:label="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common Stock, Capital Shares Reserved for Future Issuance (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance" xlink:to="us-gaap_CommonStockCapitalSharesReservedForFutureIssuance-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredTaxAssetsValuationAllowance</link:label>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Valuation allowances for deferred tax assets</link:label>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance at January 1</link:label>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance at December 31</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_DeferredTaxAssetsValuationAllowance-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeMember" xlink:label="srt_RangeMember" xlink:type="locator"/>
    <link:label xlink:label="srt_RangeMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statistical Measurement [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeMember" xlink:to="srt_RangeMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLeasePayments" xlink:label="us-gaap_OperatingLeasePayments" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLeasePayments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash paid for amounts included in the measurement of lease liabilities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLeasePayments" xlink:to="us-gaap_OperatingLeasePayments-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MaximumMember" xlink:label="srt_MaximumMember" xlink:type="locator"/>
    <link:label xlink:label="srt_MaximumMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MaximumMember" xlink:to="srt_MaximumMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SummaryOfValuationAllowanceTextBlock" xlink:label="us-gaap_SummaryOfValuationAllowanceTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SummaryOfValuationAllowanceTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Summary of Valuation Allowance [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SummaryOfValuationAllowanceTextBlock" xlink:to="us-gaap_SummaryOfValuationAllowanceTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MinimumMember" xlink:label="srt_MinimumMember" xlink:type="locator"/>
    <link:label xlink:label="srt_MinimumMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Minimum [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MinimumMember" xlink:to="srt_MinimumMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductOrServiceAxis" xlink:label="srt_ProductOrServiceAxis" xlink:type="locator"/>
    <link:label xlink:label="srt_ProductOrServiceAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ProductOrServiceAxis" xlink:to="srt_ProductOrServiceAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_ProductsAndServicesDomain" xlink:label="srt_ProductsAndServicesDomain" xlink:type="locator"/>
    <link:label xlink:label="srt_ProductsAndServicesDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_ProductsAndServicesDomain" xlink:to="srt_ProductsAndServicesDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RangeAxis" xlink:label="srt_RangeAxis" xlink:type="locator"/>
    <link:label xlink:label="srt_RangeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statistical Measurement [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RangeAxis" xlink:to="srt_RangeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NumberOfReportingUnits" xlink:label="us-gaap_NumberOfReportingUnits" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NumberOfReportingUnits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NumberOfReportingUnits</link:label>
    <link:label xlink:label="us-gaap_NumberOfReportingUnits-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Reporting Units</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NumberOfReportingUnits" xlink:to="us-gaap_NumberOfReportingUnits-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsOther" xlink:label="us-gaap_DeferredTaxAssetsOther" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsOther-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredTaxAssetsOther</link:label>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsOther-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsOther" xlink:to="us-gaap_DeferredTaxAssetsOther-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NoncurrentAssets" xlink:label="us-gaap_NoncurrentAssets" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NoncurrentAssets-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:label xlink:label="us-gaap_NoncurrentAssets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NoncurrentAssets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NoncurrentAssets" xlink:to="us-gaap_NoncurrentAssets-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_StatementGeographicalAxis" xlink:label="srt_StatementGeographicalAxis" xlink:type="locator"/>
    <link:label xlink:label="srt_StatementGeographicalAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_StatementGeographicalAxis" xlink:to="srt_StatementGeographicalAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_SegmentGeographicalDomain" xlink:label="srt_SegmentGeographicalDomain" xlink:type="locator"/>
    <link:label xlink:label="srt_SegmentGeographicalDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_SegmentGeographicalDomain" xlink:to="srt_SegmentGeographicalDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:label="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Goodwill and Intangible Assets, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock" xlink:to="us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTextBlock" xlink:to="us-gaap_PropertyPlantAndEquipmentTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxAssetsGross" xlink:label="us-gaap_DeferredTaxAssetsGross" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsGross-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredTaxAssetsGross</link:label>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsGross-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total deferred tax assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxAssetsGross" xlink:to="us-gaap_DeferredTaxAssetsGross-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_InvestmentPlanMaximumAmountApproved" xlink:label="ftek_InvestmentPlanMaximumAmountApproved" xlink:type="locator"/>
    <link:label xlink:label="ftek_InvestmentPlanMaximumAmountApproved-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_InvestmentPlanMaximumAmountApproved</link:label>
    <link:label xlink:label="ftek_InvestmentPlanMaximumAmountApproved-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment Plan, Maximum Amount. Approved</link:label>
    <link:label xlink:label="ftek_InvestmentPlanMaximumAmountApproved-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maximum amount approved for investment plan.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_InvestmentPlanMaximumAmountApproved" xlink:to="ftek_InvestmentPlanMaximumAmountApproved-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxLiabilities" xlink:label="us-gaap_DeferredIncomeTaxLiabilities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredIncomeTaxLiabilities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredIncomeTaxLiabilities</link:label>
    <link:label xlink:label="us-gaap_DeferredIncomeTaxLiabilities-label" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Total deferred tax liabilities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxLiabilities" xlink:to="us-gaap_DeferredIncomeTaxLiabilities-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_EuropeMember" xlink:label="srt_EuropeMember" xlink:type="locator"/>
    <link:label xlink:label="srt_EuropeMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Europe [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_EuropeMember" xlink:to="srt_EuropeMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryNet" xlink:label="us-gaap_InventoryNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InventoryNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventories, net</link:label>
    <link:label xlink:label="us-gaap_InventoryNet-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Inventory, Net, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryNet" xlink:to="us-gaap_InventoryNet-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock" xlink:label="us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock" xlink:to="us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral" xlink:label="ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral" xlink:type="locator"/>
    <link:label xlink:label="ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral</link:label>
    <link:label xlink:label="ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of Face Amount of Letters of Credit As Collateral</link:label>
    <link:label xlink:label="ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of face amount of letters of credit as collateral.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral" xlink:to="ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit" xlink:label="ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit" xlink:type="locator"/>
    <link:label xlink:label="ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit</link:label>
    <link:label xlink:label="ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payment, Basis Points on Face Value of Letters of Credit</link:label>
    <link:label xlink:label="ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payment as basis points on face value of letters of credit.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit" xlink:to="ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryValuationReserves" xlink:label="us-gaap_InventoryValuationReserves" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InventoryValuationReserves-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_InventoryValuationReserves</link:label>
    <link:label xlink:label="us-gaap_InventoryValuationReserves-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Excess and obsolete inventory reserve, beginning balance</link:label>
    <link:label xlink:label="us-gaap_InventoryValuationReserves-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Excess and obsolete inventory reserve, ending balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryValuationReserves" xlink:to="us-gaap_InventoryValuationReserves-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DebtSecuritiesHeldtomaturityMaturityTerm" xlink:label="ftek_DebtSecuritiesHeldtomaturityMaturityTerm" xlink:type="locator"/>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityMaturityTerm-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_DebtSecuritiesHeldtomaturityMaturityTerm</link:label>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityMaturityTerm-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Securities, Held-to-maturity, Maturity Term (Month)</link:label>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityMaturityTerm-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maturity term of debt security, held-to-maturity securities.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DebtSecuritiesHeldtomaturityMaturityTerm" xlink:to="ftek_DebtSecuritiesHeldtomaturityMaturityTerm-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MajorCustomersAxis" xlink:label="srt_MajorCustomersAxis" xlink:type="locator"/>
    <link:label xlink:label="srt_MajorCustomersAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MajorCustomersAxis" xlink:to="srt_MajorCustomersAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_NameOfMajorCustomerDomain" xlink:label="srt_NameOfMajorCustomerDomain" xlink:type="locator"/>
    <link:label xlink:label="srt_NameOfMajorCustomerDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_NameOfMajorCustomerDomain" xlink:to="srt_NameOfMajorCustomerDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciable Life (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:to="us-gaap_PropertyPlantAndEquipmentUsefulLife-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConstructionInProgressMember" xlink:label="us-gaap_ConstructionInProgressMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ConstructionInProgressMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Construction in Progress [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConstructionInProgressMember" xlink:to="us-gaap_ConstructionInProgressMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnbilledReceivablesCurrent" xlink:label="us-gaap_UnbilledReceivablesCurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_UnbilledReceivablesCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unbilled receivables</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnbilledReceivablesCurrent" xlink:to="us-gaap_UnbilledReceivablesCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">OPERATING ACTIVITIES</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_AccountsAndOtherReceivablesNetCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other short-term receivables</link:label>
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    <link:label xlink:label="us-gaap_AccountsReceivableGrossCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trade receivables</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_FurnitureAndFixturesMember" xlink:label="us-gaap_FurnitureAndFixturesMember" xlink:type="locator"/>
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    <link:label xlink:label="us-gaap_AccountsReceivableNetCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts receivable, net</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StandardProductWarrantyAccrual" xlink:label="us-gaap_StandardProductWarrantyAccrual" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StandardProductWarrantyAccrual-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_StandardProductWarrantyAccrual</link:label>
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    <link:label xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost</link:label>
    <link:label xlink:label="us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock compensation expense</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease" xlink:label="us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease</link:label>
    <link:label xlink:label="us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Standard Product Warranty Accrual, Period Increase (Decrease), Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease" xlink:to="us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccumulatedTranslationAdjustmentMember" xlink:label="us-gaap_AccumulatedTranslationAdjustmentMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccumulatedTranslationAdjustmentMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Foreign Currency Adjustment Attributable to Parent [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedTranslationAdjustmentMember" xlink:to="us-gaap_AccumulatedTranslationAdjustmentMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BuildingMember" xlink:label="us-gaap_BuildingMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_BuildingMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Building [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BuildingMember" xlink:to="us-gaap_BuildingMember-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">AOCI Attributable to Parent [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccumulatedOtherComprehensiveIncomeMember" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeMember-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_ShortTermInvestments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term investments</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShortTermInvestments" xlink:to="us-gaap_ShortTermInvestments-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AdditionalPaidInCapitalCommonStock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional paid-in capital</link:label>
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    <link:label xlink:label="us-gaap_LandMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LandMember" xlink:to="us-gaap_LandMember-label" xlink:type="arc"/>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:to="us-gaap_PropertyPlantAndEquipmentTypeDomain-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations</link:label>
    <link:label xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Cash, cash equivalents and restricted cash at beginning of period</link:label>
    <link:label xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Cash, cash equivalents and restricted cash at end of period</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryPolicyTextBlock" xlink:label="us-gaap_InventoryPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InventoryPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryPolicyTextBlock" xlink:to="us-gaap_InventoryPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PrivatePlacementMember" xlink:label="us-gaap_PrivatePlacementMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PrivatePlacementMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Private Placement [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrivatePlacementMember" xlink:to="us-gaap_PrivatePlacementMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="us-gaap_InvestmentIncomeInterest" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InvestmentIncomeInterest-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest income</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentIncomeInterest" xlink:to="us-gaap_InvestmentIncomeInterest-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect</link:label>
    <link:label xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net (decrease) increase in cash, cash equivalents and restricted cash</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_Liabilities" xlink:label="us-gaap_Liabilities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_Liabilities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_Liabilities</link:label>
    <link:label xlink:label="us-gaap_Liabilities-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total liabilities</link:label>
    <link:label xlink:label="us-gaap_Liabilities-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_Liabilities" xlink:to="us-gaap_Liabilities-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NetCashProvidedByUsedInFinancingActivities</link:label>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash (used in) provided by financing activities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="us-gaap_CommitmentsAndContingencies" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CommitmentsAndContingencies-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and contingencies (Note 9)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CommitmentsAndContingencies" xlink:to="us-gaap_CommitmentsAndContingencies-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:label="us-gaap_SubsidiarySaleOfStockAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SubsidiarySaleOfStockAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sale of Stock [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SubsidiarySaleOfStockAxis" xlink:to="us-gaap_SubsidiarySaleOfStockAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sale of Stock [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SaleOfStockNameOfTransactionDomain" xlink:to="us-gaap_SaleOfStockNameOfTransactionDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effect of exchange rate fluctuations on cash</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingIncomeLoss-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OperatingIncomeLoss</link:label>
    <link:label xlink:label="us-gaap_OperatingIncomeLoss-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating income (loss) from continuing operations</link:label>
    <link:label xlink:label="us-gaap_OperatingIncomeLoss-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Operating loss</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingIncomeLoss" xlink:to="us-gaap_OperatingIncomeLoss-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ContractWithCustomerLiabilityRevenueRecognized</link:label>
    <link:label xlink:label="us-gaap_ContractWithCustomerLiabilityRevenueRecognized-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract with Customer, Liability, Revenue Recognized</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ContractWithCustomerLiabilityRevenueRecognized" xlink:to="us-gaap_ContractWithCustomerLiabilityRevenueRecognized-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NetCashProvidedByUsedInOperatingActivities</link:label>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash (used in) provided by operating activities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilities" xlink:label="us-gaap_DeferredTaxLiabilities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredTaxLiabilities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredTaxLiabilities</link:label>
    <link:label xlink:label="us-gaap_DeferredTaxLiabilities-label" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Net deferred tax liability</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilities" xlink:to="us-gaap_DeferredTaxLiabilities-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_NetCashProvidedByUsedInInvestingActivities</link:label>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used in investing activities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PrepaidExpenseAndOtherAssetsCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prepaid expenses and other current assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PrepaidExpenseAndOtherAssetsCurrent" xlink:to="us-gaap_PrepaidExpenseAndOtherAssetsCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets" xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets</link:label>
    <link:label xlink:label="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Intangible assets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets" xlink:to="us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostOfRevenue" xlink:label="us-gaap_CostOfRevenue" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CostOfRevenue-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of sales</link:label>
    <link:label xlink:label="us-gaap_CostOfRevenue-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Cost of sales</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostOfRevenue" xlink:to="us-gaap_CostOfRevenue-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_GrossProfit" xlink:label="us-gaap_GrossProfit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_GrossProfit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_GrossProfit</link:label>
    <link:label xlink:label="us-gaap_GrossProfit-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Gross margin</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_GrossProfit" xlink:to="us-gaap_GrossProfit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock" xlink:to="us-gaap_ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredIncomeTaxLiabilitiesNet-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred income taxes</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxLiabilitiesNet" xlink:to="us-gaap_DeferredIncomeTaxLiabilitiesNet-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InventoryWriteDown" xlink:label="us-gaap_InventoryWriteDown" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InventoryWriteDown-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Write-offs / Recoveries</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InventoryWriteDown" xlink:to="us-gaap_InventoryWriteDown-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued</link:label>
    <link:label xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued" xlink:to="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_InvestmentPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment, Policy [Policy Text Block]</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConcentrationRiskCreditRisk" xlink:label="us-gaap_ConcentrationRiskCreditRisk" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ConcentrationRiskCreditRisk-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Concentration Risk, Credit Risk, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConcentrationRiskCreditRisk" xlink:to="us-gaap_ConcentrationRiskCreditRisk-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LettersOfCreditOutstandingAmount" xlink:label="us-gaap_LettersOfCreditOutstandingAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LettersOfCreditOutstandingAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LettersOfCreditOutstandingAmount</link:label>
    <link:label xlink:label="us-gaap_LettersOfCreditOutstandingAmount-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letters of Credit Outstanding, Amount</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredTaxLiabilitiesAbstract" xlink:label="us-gaap_DeferredTaxLiabilitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredTaxLiabilitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred tax liabilities:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredTaxLiabilitiesAbstract" xlink:to="us-gaap_DeferredTaxLiabilitiesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PaymentsForRepurchaseOfEquity" xlink:label="us-gaap_PaymentsForRepurchaseOfEquity" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PaymentsForRepurchaseOfEquity-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_PaymentsForRepurchaseOfEquity</link:label>
    <link:label xlink:label="us-gaap_PaymentsForRepurchaseOfEquity-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Taxes paid on behalf of equity award participants</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PaymentsForRepurchaseOfEquity" xlink:to="us-gaap_PaymentsForRepurchaseOfEquity-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostsAndExpenses" xlink:label="us-gaap_CostsAndExpenses" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CostsAndExpenses-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CostsAndExpenses</link:label>
    <link:label xlink:label="us-gaap_CostsAndExpenses-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total costs and expenses</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpenses" xlink:to="us-gaap_CostsAndExpenses-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostsAndExpensesAbstract" xlink:label="us-gaap_CostsAndExpensesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CostsAndExpensesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Costs and expenses:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostsAndExpensesAbstract" xlink:to="us-gaap_CostsAndExpensesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CostOfSalesPolicyTextBlock" xlink:label="us-gaap_CostOfSalesPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CostOfSalesPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Goods and Service [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CostOfSalesPolicyTextBlock" xlink:to="us-gaap_CostOfSalesPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfPrivatePlacement" xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from sale of common stock issued in connection with private placement</link:label>
    <link:label xlink:label="us-gaap_ProceedsFromIssuanceOfPrivatePlacement-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Private Placement</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfPrivatePlacement" xlink:to="us-gaap_ProceedsFromIssuanceOfPrivatePlacement-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RetainedEarningsMember" xlink:label="us-gaap_RetainedEarningsMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RetainedEarningsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Retained Earnings [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RetainedEarningsMember" xlink:to="us-gaap_RetainedEarningsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="us-gaap_ProceedsFromStockOptionsExercised" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProceedsFromStockOptionsExercised-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ProceedsFromStockOptionsExercised</link:label>
    <link:label xlink:label="us-gaap_ProceedsFromStockOptionsExercised-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from Stock Options Exercised</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromStockOptionsExercised" xlink:to="us-gaap_ProceedsFromStockOptionsExercised-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
    <link:label xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
    <link:label xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenues from external customers</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax" xlink:to="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CurrentStateAndLocalTaxExpenseBenefit</link:label>
    <link:label xlink:label="us-gaap_CurrentStateAndLocalTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">State</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentStateAndLocalTaxExpenseBenefit" xlink:to="us-gaap_CurrentStateAndLocalTaxExpenseBenefit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit</link:label>
    <link:label xlink:label="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">State</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TreasuryStockMember" xlink:label="us-gaap_TreasuryStockMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TreasuryStockMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Treasury Stock [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TreasuryStockMember" xlink:to="us-gaap_TreasuryStockMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CurrentForeignTaxExpenseBenefit" xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CurrentForeignTaxExpenseBenefit</link:label>
    <link:label xlink:label="us-gaap_CurrentForeignTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Foreign</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentForeignTaxExpenseBenefit" xlink:to="us-gaap_CurrentForeignTaxExpenseBenefit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="us-gaap_AdditionalPaidInCapitalMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AdditionalPaidInCapitalMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional Paid-in Capital [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AdditionalPaidInCapitalMember" xlink:to="us-gaap_AdditionalPaidInCapitalMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CurrentFederalTaxExpenseBenefit" xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CurrentFederalTaxExpenseBenefit</link:label>
    <link:label xlink:label="us-gaap_CurrentFederalTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Federal</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentFederalTaxExpenseBenefit" xlink:to="us-gaap_CurrentFederalTaxExpenseBenefit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_DeferredFederalIncomeTaxExpenseBenefit</link:label>
    <link:label xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Federal Income Tax Expense (Benefit)</link:label>
    <link:label xlink:label="us-gaap_DeferredFederalIncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Federal</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredFederalIncomeTaxExpenseBenefit" xlink:to="us-gaap_DeferredFederalIncomeTaxExpenseBenefit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract-label" xlink:type="arc"/>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementEquityComponentsAxis" xlink:to="us-gaap_StatementEquityComponentsAxis-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_EquityComponentDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Component [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EquityComponentDomain" xlink:to="us-gaap_EquityComponentDomain-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_CurrentIncomeTaxExpenseBenefit</link:label>
    <link:label xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit-label" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Total current</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CurrentIncomeTaxExpenseBenefit" xlink:to="us-gaap_CurrentIncomeTaxExpenseBenefit-label" xlink:type="arc"/>
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    <link:label xlink:label="us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)</link:label>
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    <link:label xlink:label="us-gaap_ClassOfWarrantOrRightAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Warrant or Right [Axis]</link:label>
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    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligation" xlink:label="us-gaap_RevenueRemainingPerformanceObligation" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RevenueRemainingPerformanceObligation-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_RevenueRemainingPerformanceObligation</link:label>
    <link:label xlink:label="us-gaap_RevenueRemainingPerformanceObligation-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Amount</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRemainingPerformanceObligation" xlink:to="us-gaap_RevenueRemainingPerformanceObligation-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightDomain" xlink:label="us-gaap_ClassOfWarrantOrRightDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ClassOfWarrantOrRightDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Warrant or Right [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightDomain" xlink:to="us-gaap_ClassOfWarrantOrRightDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis" xlink:to="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign</link:label>
    <link:label xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Foreign</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightOutstanding" xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number outstanding/ exercisable (in shares)</link:label>
    <link:label xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Warrant or Right, Outstanding (in shares)</link:label>
    <link:label xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance (in shares)</link:label>
    <link:label xlink:label="us-gaap_ClassOfWarrantOrRightOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightOutstanding" xlink:to="us-gaap_ClassOfWarrantOrRightOutstanding-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest</link:label>
    <link:label xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">(Loss) income before income taxes</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StateAdministrationOfTaxationChinaMember" xlink:label="us-gaap_StateAdministrationOfTaxationChinaMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StateAdministrationOfTaxationChinaMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">State Administration of Taxation, China [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StateAdministrationOfTaxationChinaMember" xlink:to="us-gaap_StateAdministrationOfTaxationChinaMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights</link:label>
    <link:label xlink:label="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights" xlink:to="us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">United States</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic" xlink:to="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo" xlink:label="ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo" xlink:type="locator"/>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">After one year through two years, fair value</link:label>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo" xlink:to="ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree" xlink:label="ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree" xlink:type="locator"/>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">After two years through three years, fair value</link:label>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree" xlink:to="ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_IcfrAuditorAttestationFlag" xlink:label="dei_IcfrAuditorAttestationFlag" xlink:type="locator"/>
    <link:label xlink:label="dei_IcfrAuditorAttestationFlag-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ICFR Auditor Attestation Flag</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_IcfrAuditorAttestationFlag" xlink:to="dei_IcfrAuditorAttestationFlag-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_MinistryOfEconomicAffairsAndFinanceItalyMember" xlink:label="us-gaap_MinistryOfEconomicAffairsAndFinanceItalyMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_MinistryOfEconomicAffairsAndFinanceItalyMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ministry of Economic Affairs and Finance, Italy [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_MinistryOfEconomicAffairsAndFinanceItalyMember" xlink:to="us-gaap_MinistryOfEconomicAffairsAndFinanceItalyMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock" xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock" xlink:to="us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo" xlink:label="ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo" xlink:type="locator"/>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">After one year through two years, amortized cost</link:label>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo" xlink:to="ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other comprehensive loss:</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock" xlink:to="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ConvertibleDebt" xlink:label="us-gaap_ConvertibleDebt" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ConvertibleDebt-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nil coupon perpetual loan notes</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ConvertibleDebt" xlink:to="us-gaap_ConvertibleDebt-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree" xlink:label="ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree" xlink:type="locator"/>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">After two years through three years, amortized cost</link:label>
    <link:label xlink:label="ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree" xlink:to="ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TimingOfTransferOfGoodOrServiceDomain" xlink:label="us-gaap_TimingOfTransferOfGoodOrServiceDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TimingOfTransferOfGoodOrServiceDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Timing of Transfer of Good or Service [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TimingOfTransferOfGoodOrServiceDomain" xlink:to="us-gaap_TimingOfTransferOfGoodOrServiceDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxAuthorityNameAxis" xlink:label="us-gaap_IncomeTaxAuthorityNameAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxAuthorityNameAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Authority, Name [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityNameAxis" xlink:to="us-gaap_IncomeTaxAuthorityNameAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_VehiclesMember" xlink:label="us-gaap_VehiclesMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_VehiclesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Vehicles [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_VehiclesMember" xlink:to="us-gaap_VehiclesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TransferredAtPointInTimeMember" xlink:label="us-gaap_TransferredAtPointInTimeMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TransferredAtPointInTimeMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transferred at Point in Time [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TransferredAtPointInTimeMember" xlink:to="us-gaap_TransferredAtPointInTimeMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxAuthorityNameDomain" xlink:label="us-gaap_IncomeTaxAuthorityNameDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxAuthorityNameDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Authority, Name [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityNameDomain" xlink:to="us-gaap_IncomeTaxAuthorityNameDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TransferredOverTimeMember" xlink:label="us-gaap_TransferredOverTimeMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TransferredOverTimeMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Transferred over Time [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TransferredOverTimeMember" xlink:to="us-gaap_TransferredOverTimeMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxAuthorityAxis" xlink:label="us-gaap_IncomeTaxAuthorityAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxAuthorityAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Authority [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityAxis" xlink:to="us-gaap_IncomeTaxAuthorityAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeTaxAuthorityDomain" xlink:label="us-gaap_IncomeTaxAuthorityDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeTaxAuthorityDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax Authority [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeTaxAuthorityDomain" xlink:to="us-gaap_IncomeTaxAuthorityDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DisaggregationOfRevenueTableTextBlock" xlink:label="us-gaap_DisaggregationOfRevenueTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DisaggregationOfRevenueTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Disaggregation of Revenue [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DisaggregationOfRevenueTableTextBlock" xlink:to="us-gaap_DisaggregationOfRevenueTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_DomesticCountryMember" xlink:label="us-gaap_DomesticCountryMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_DomesticCountryMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Domestic Tax Authority [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_DomesticCountryMember" xlink:to="us-gaap_DomesticCountryMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ForeignCountryMember" xlink:label="us-gaap_ForeignCountryMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ForeignCountryMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign Tax Authority [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ForeignCountryMember" xlink:to="us-gaap_ForeignCountryMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TimingOfTransferOfGoodOrServiceAxis" xlink:label="us-gaap_TimingOfTransferOfGoodOrServiceAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TimingOfTransferOfGoodOrServiceAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Timing of Transfer of Good or Service [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TimingOfTransferOfGoodOrServiceAxis" xlink:to="us-gaap_TimingOfTransferOfGoodOrServiceAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes" xlink:label="us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes</link:label>
    <link:label xlink:label="us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Income (loss) before income taxes</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes" xlink:to="us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:label="us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RevenueFromContractWithCustomerTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from Contract with Customer [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromContractWithCustomerTextBlock" xlink:to="us-gaap_RevenueFromContractWithCustomerTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentAnnualReport" xlink:label="dei_DocumentAnnualReport" xlink:type="locator"/>
    <link:label xlink:label="dei_DocumentAnnualReport-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Annual Report</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentAnnualReport" xlink:to="dei_DocumentAnnualReport-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TradeAndOtherAccountsReceivablePolicy" xlink:label="us-gaap_TradeAndOtherAccountsReceivablePolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TradeAndOtherAccountsReceivablePolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TradeAndOtherAccountsReceivablePolicy" xlink:to="us-gaap_TradeAndOtherAccountsReceivablePolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy" xlink:label="us-gaap_ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy" xlink:to="us-gaap_ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BalanceSheetLocationAxis" xlink:label="us-gaap_BalanceSheetLocationAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_BalanceSheetLocationAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Balance Sheet Location [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationAxis" xlink:to="us-gaap_BalanceSheetLocationAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_InvestmentPlanMaximumAdditionalAmountApproved" xlink:label="ftek_InvestmentPlanMaximumAdditionalAmountApproved" xlink:type="locator"/>
    <link:label xlink:label="ftek_InvestmentPlanMaximumAdditionalAmountApproved-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_InvestmentPlanMaximumAdditionalAmountApproved</link:label>
    <link:label xlink:label="ftek_InvestmentPlanMaximumAdditionalAmountApproved-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment Plan, Maximum Additional Amount, Approved</link:label>
    <link:label xlink:label="ftek_InvestmentPlanMaximumAdditionalAmountApproved-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The additional amount approved under investment plan.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_InvestmentPlanMaximumAdditionalAmountApproved" xlink:to="ftek_InvestmentPlanMaximumAdditionalAmountApproved-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BalanceSheetLocationDomain" xlink:label="us-gaap_BalanceSheetLocationDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_BalanceSheetLocationDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Balance Sheet Location [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BalanceSheetLocationDomain" xlink:to="us-gaap_BalanceSheetLocationDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:label="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy" xlink:to="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_InProcessEquipmentMember" xlink:label="ftek_InProcessEquipmentMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_InProcessEquipmentMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">In Process Equipment [Member]</link:label>
    <link:label xlink:label="ftek_InProcessEquipmentMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to in process equipment.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_InProcessEquipmentMember" xlink:to="ftek_InProcessEquipmentMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityIncorporationStateCountryCode" xlink:label="dei_EntityIncorporationStateCountryCode" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityIncorporationStateCountryCode-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Incorporation, State or Country Code</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnrecognizedTaxBenefits" xlink:label="us-gaap_UnrecognizedTaxBenefits" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_UnrecognizedTaxBenefits-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_UnrecognizedTaxBenefits</link:label>
    <link:label xlink:label="us-gaap_UnrecognizedTaxBenefits-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unrecognized Tax Benefits, Ending Balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnrecognizedTaxBenefits" xlink:to="us-gaap_UnrecognizedTaxBenefits-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AccountingPoliciesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting Policies [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AccountingPoliciesAbstract" xlink:to="us-gaap_AccountingPoliciesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_DocumentTransitionReport" xlink:label="dei_DocumentTransitionReport" xlink:type="locator"/>
    <link:label xlink:label="dei_DocumentTransitionReport-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Transition Report</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentTransitionReport" xlink:to="dei_DocumentTransitionReport-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_BasisOfAccountingPolicyPolicyTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basis of Accounting, Policy [Policy Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_BasisOfAccountingPolicyPolicyTextBlock" xlink:to="us-gaap_BasisOfAccountingPolicyPolicyTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SellingGeneralAndAdministrativeExpensesMember" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpensesMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SellingGeneralAndAdministrativeExpensesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Selling, General and Administrative Expenses [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SellingGeneralAndAdministrativeExpensesMember" xlink:to="us-gaap_SellingGeneralAndAdministrativeExpensesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_EntityInteractiveDataCurrent" xlink:label="dei_EntityInteractiveDataCurrent" xlink:type="locator"/>
    <link:label xlink:label="dei_EntityInteractiveDataCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Interactive Data Current</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityInteractiveDataCurrent" xlink:to="dei_EntityInteractiveDataCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_SecurityExchangeName" xlink:label="dei_SecurityExchangeName" xlink:type="locator"/>
    <link:label xlink:label="dei_SecurityExchangeName-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Security Exchange Name</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_Security12bTitle" xlink:label="dei_Security12bTitle" xlink:type="locator"/>
    <link:label xlink:label="dei_Security12bTitle-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Title of 12(b) Security</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_ProceedsFromIssuanceOfLongTermDebt</link:label>
    <link:label xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Long-term Debt, Total</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ProceedsFromIssuanceOfLongTermDebt" xlink:to="us-gaap_ProceedsFromIssuanceOfLongTermDebt-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_NilCouponPerpetualLoanNotesMember" xlink:label="ftek_NilCouponPerpetualLoanNotesMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_NilCouponPerpetualLoanNotesMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nil Coupon Perpetual Loan Notes [Member]</link:label>
    <link:label xlink:label="ftek_NilCouponPerpetualLoanNotesMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Refers to perpetual loan notes with a nil coupon.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_NilCouponPerpetualLoanNotesMember" xlink:to="ftek_NilCouponPerpetualLoanNotesMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementLocationAxis" xlink:label="us-gaap_IncomeStatementLocationAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeStatementLocationAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement Location [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationAxis" xlink:to="us-gaap_IncomeStatementLocationAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementLocationDomain" xlink:label="us-gaap_IncomeStatementLocationDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeStatementLocationDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement Location [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementLocationDomain" xlink:to="us-gaap_IncomeStatementLocationDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_OfficeBuildingMember" xlink:label="srt_OfficeBuildingMember" xlink:type="locator"/>
    <link:label xlink:label="srt_OfficeBuildingMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Office Building [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_OfficeBuildingMember" xlink:to="srt_OfficeBuildingMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:label="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:type="locator"/>
    <link:label xlink:label="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate, Type of Property [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:to="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock" xlink:to="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:label="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:type="locator"/>
    <link:label xlink:label="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:to="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AuditorName" xlink:label="dei_AuditorName" xlink:type="locator"/>
    <link:label xlink:label="dei_AuditorName-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Auditor Name</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorName" xlink:to="dei_AuditorName-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AuditorFirmId" xlink:label="dei_AuditorFirmId" xlink:type="locator"/>
    <link:label xlink:label="dei_AuditorFirmId-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Auditor Firm ID</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorFirmId" xlink:to="dei_AuditorFirmId-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2022/dei-2022.xsd#dei_AuditorLocation" xlink:label="dei_AuditorLocation" xlink:type="locator"/>
    <link:label xlink:label="dei_AuditorLocation-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Auditor Location</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AuditorLocation" xlink:to="dei_AuditorLocation-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementBusinessSegmentsAxis" xlink:label="us-gaap_StatementBusinessSegmentsAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementBusinessSegmentsAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementBusinessSegmentsAxis" xlink:to="us-gaap_StatementBusinessSegmentsAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:label="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:type="locator"/>
    <link:label xlink:label="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Name of Property [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:to="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SegmentDomain" xlink:label="us-gaap_SegmentDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SegmentDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segments [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SegmentDomain" xlink:to="us-gaap_SegmentDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/srt/2022/elts/srt-2022.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:label="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:type="locator"/>
    <link:label xlink:label="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Name of Property [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:to="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AllOtherSegmentsMember" xlink:label="us-gaap_AllOtherSegmentsMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AllOtherSegmentsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Segments [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AllOtherSegmentsMember" xlink:to="us-gaap_AllOtherSegmentsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_AirPollutionControlMember" xlink:label="ftek_AirPollutionControlMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_AirPollutionControlMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Air Pollution Control [Member]</link:label>
    <link:label xlink:label="ftek_AirPollutionControlMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Refers to the Air Pollution Control segment.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_AirPollutionControlMember" xlink:to="ftek_AirPollutionControlMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PledgingPurposeDomain" xlink:label="us-gaap_PledgingPurposeDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PledgingPurposeDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pledging Purpose [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PledgingPurposeDomain" xlink:to="us-gaap_PledgingPurposeDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharePrice" xlink:label="us-gaap_SharePrice" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SharePrice-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_SharePrice</link:label>
    <link:label xlink:label="us-gaap_SharePrice-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share Price (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharePrice" xlink:to="us-gaap_SharePrice-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount</link:label>
    <link:label xlink:label="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount" xlink:to="us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Diluted (in shares)</link:label>
    <link:label xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Diluted weighted-average shares (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding" xlink:to="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_OtherAccruedLiabilitiesMiscellaneousCurrent" xlink:label="ftek_OtherAccruedLiabilitiesMiscellaneousCurrent" xlink:type="locator"/>
    <link:label xlink:label="ftek_OtherAccruedLiabilitiesMiscellaneousCurrent-label" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other accrued liabilities</link:label>
    <link:label xlink:label="ftek_OtherAccruedLiabilitiesMiscellaneousCurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_OtherAccruedLiabilitiesMiscellaneousCurrent</link:label>
    <link:label xlink:label="ftek_OtherAccruedLiabilitiesMiscellaneousCurrent-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of miscellaneous expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_OtherAccruedLiabilitiesMiscellaneousCurrent" xlink:to="ftek_OtherAccruedLiabilitiesMiscellaneousCurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_FUELCHEMMember" xlink:label="ftek_FUELCHEMMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_FUELCHEMMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">FUEL CHEM [Member]</link:label>
    <link:label xlink:label="ftek_FUELCHEMMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Refers to the FUEL CHEM technology segment.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_FUELCHEMMember" xlink:to="ftek_FUELCHEMMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NonUsMember" xlink:label="us-gaap_NonUsMember" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NonUsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Non-US [Member]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NonUsMember" xlink:to="us-gaap_NonUsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PledgingPurposeAxis" xlink:label="us-gaap_PledgingPurposeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PledgingPurposeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pledging Purpose [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PledgingPurposeAxis" xlink:to="us-gaap_PledgingPurposeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OperatingLossCarryforwards" xlink:label="us-gaap_OperatingLossCarryforwards" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OperatingLossCarryforwards-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_OperatingLossCarryforwards</link:label>
    <link:label xlink:label="us-gaap_OperatingLossCarryforwards-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Loss Carryforwards</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OperatingLossCarryforwards" xlink:to="us-gaap_OperatingLossCarryforwards-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_UnbilledContractsReceivable" xlink:label="us-gaap_UnbilledContractsReceivable" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_UnbilledContractsReceivable-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_UnbilledContractsReceivable</link:label>
    <link:label xlink:label="us-gaap_UnbilledContractsReceivable-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unbilled Contracts Receivable</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_UnbilledContractsReceivable" xlink:to="us-gaap_UnbilledContractsReceivable-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementTable" xlink:label="us-gaap_StatementTable" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementTable-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementTable" xlink:to="us-gaap_StatementTable-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="us-gaap_StatementOfFinancialPositionAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementOfFinancialPositionAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfFinancialPositionAbstract" xlink:to="us-gaap_StatementOfFinancialPositionAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareDiluted" xlink:label="us-gaap_EarningsPerShareDiluted" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EarningsPerShareDiluted-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Diluted net (loss) income per common share (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareDiluted" xlink:to="us-gaap_EarningsPerShareDiluted-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basic weighted-average shares (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic" xlink:to="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share based compensation</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments</link:label>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments-label" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Other</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EffectiveIncomeTaxRateContinuingOperations</link:label>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateContinuingOperations-label" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:type="resource" xml:lang="en-US">Income tax (expense) benefit effective rate</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateContinuingOperations" xlink:to="us-gaap_EffectiveIncomeTaxRateContinuingOperations-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate</link:label>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">State rate change</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EarningsPerShareBasic" xlink:label="us-gaap_EarningsPerShareBasic" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EarningsPerShareBasic-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Basic net (loss) income per common share (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EarningsPerShareBasic" xlink:to="us-gaap_EarningsPerShareBasic-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance</link:label>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Valuation allowance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_AncillaryRevenueMember" xlink:label="ftek_AncillaryRevenueMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_AncillaryRevenueMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ancillary Revenue [Member]</link:label>
    <link:label xlink:label="ftek_AncillaryRevenueMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Refers to revenue from ancillary sources.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_AncillaryRevenueMember" xlink:to="ftek_AncillaryRevenueMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="us-gaap_StatementOfCashFlowsAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementOfCashFlowsAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfCashFlowsAbstract" xlink:to="us-gaap_StatementOfCashFlowsAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts" xlink:label="ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts" xlink:type="locator"/>
    <link:label xlink:label="ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts</link:label>
    <link:label xlink:label="ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Contract with Customer, Contracts in Progress, Number of Contracts Identified as Loss Contracts</link:label>
    <link:label xlink:label="ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of contracts in progress identified as loss contracts.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts" xlink:to="ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementOfStockholdersEquityAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Stockholders' Equity [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementOfStockholdersEquityAbstract" xlink:to="us-gaap_StatementOfStockholdersEquityAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_TechnologySolutionsMember" xlink:label="ftek_TechnologySolutionsMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_TechnologySolutionsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Technology Solutions [Member]</link:label>
    <link:label xlink:label="ftek_TechnologySolutionsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Refers to the technology solutions product and services segment.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_TechnologySolutionsMember" xlink:to="ftek_TechnologySolutionsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_SparePartsMember" xlink:label="ftek_SparePartsMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_SparePartsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Spare Parts [Member]</link:label>
    <link:label xlink:label="ftek_SparePartsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Refers to the spare parts product or services segment.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_SparePartsMember" xlink:to="ftek_SparePartsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_IncomeStatementAbstract" xlink:label="us-gaap_IncomeStatementAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_IncomeStatementAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_IncomeStatementAbstract" xlink:to="us-gaap_IncomeStatementAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Foreign currency translation adjustments (1)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent" xlink:to="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_LesseeOperatingLeasesSupplementalCashFlowInformationTableTextBlock" xlink:label="ftek_LesseeOperatingLeasesSupplementalCashFlowInformationTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_LesseeOperatingLeasesSupplementalCashFlowInformationTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Leases, Supplemental Cash Flow Information [Table Text Block]</link:label>
    <link:label xlink:label="ftek_LesseeOperatingLeasesSupplementalCashFlowInformationTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure of supplemental cash flow information related to operating leases of lessee.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_LesseeOperatingLeasesSupplementalCashFlowInformationTableTextBlock" xlink:to="ftek_LesseeOperatingLeasesSupplementalCashFlowInformationTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock" xlink:label="us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue from External Customers by Geographic Areas [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock" xlink:to="us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_LesseeOperatingLeaseRemainingLeaseTerm" xlink:label="us-gaap_LesseeOperatingLeaseRemainingLeaseTerm" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseRemainingLeaseTerm-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_LesseeOperatingLeaseRemainingLeaseTerm</link:label>
    <link:label xlink:label="us-gaap_LesseeOperatingLeaseRemainingLeaseTerm-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Remaining Lease Term (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_LesseeOperatingLeaseRemainingLeaseTerm" xlink:to="us-gaap_LesseeOperatingLeaseRemainingLeaseTerm-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree" xlink:label="ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree" xlink:type="locator"/>
    <link:label xlink:label="ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree</link:label>
    <link:label xlink:label="ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label xlink:label="ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount of lessee's undiscounted obligation for lease payment for operating lease due after third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree" xlink:to="ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_RangeFiveMember" xlink:label="ftek_RangeFiveMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_RangeFiveMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range Five [Member]</link:label>
    <link:label xlink:label="ftek_RangeFiveMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to range five.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_RangeFiveMember" xlink:to="ftek_RangeFiveMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_BacklogMember" xlink:label="ftek_BacklogMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_BacklogMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Backlog [Member]</link:label>
    <link:label xlink:label="ftek_BacklogMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related to backlog.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_BacklogMember" xlink:to="ftek_BacklogMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_OperatingLeaseLiabilitiesTableTextBlock" xlink:label="ftek_OperatingLeaseLiabilitiesTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_OperatingLeaseLiabilitiesTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease Liabilities [Table Text Block]</link:label>
    <link:label xlink:label="ftek_OperatingLeaseLiabilitiesTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tabular disclosure for lessee's operating leases.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_OperatingLeaseLiabilitiesTableTextBlock" xlink:to="ftek_OperatingLeaseLiabilitiesTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherCurrentLiabilitiesTableTextBlock" xlink:label="us-gaap_OtherCurrentLiabilitiesTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherCurrentLiabilitiesTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Current Liabilities [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherCurrentLiabilitiesTableTextBlock" xlink:to="us-gaap_OtherCurrentLiabilitiesTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" xlink:label="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock" xlink:to="us-gaap_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1" xlink:label="us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1</link:label>
    <link:label xlink:label="us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1-label" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restructuring and Related Cost, Expected Cost Remaining</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1" xlink:to="us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:label="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments Classified by Contractual Maturity Date [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock" xlink:to="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock" xlink:to="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Deferred Tax Assets and Liabilities [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock" xlink:to="us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:label="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock" xlink:to="us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_TypeOfRestructuringDomain" xlink:label="us-gaap_TypeOfRestructuringDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_TypeOfRestructuringDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Type of Restructuring [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_TypeOfRestructuringDomain" xlink:to="us-gaap_TypeOfRestructuringDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:label="us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring and Related Activities Disclosure [Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock" xlink:to="us-gaap_RestructuringAndRelatedActivitiesDisclosureTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes</link:label>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">State taxes, net of federal benefit</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock" xlink:label="us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring and Related Costs [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock" xlink:to="us-gaap_ScheduleOfRestructuringAndRelatedCostsTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential</link:label>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Foreign tax rate differential</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_RestructuringCostAndReserveAxis" xlink:label="us-gaap_RestructuringCostAndReserveAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_RestructuringCostAndReserveAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restructuring Type [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_RestructuringCostAndReserveAxis" xlink:to="us-gaap_RestructuringCostAndReserveAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch</link:label>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch-label" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Research and development credit</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">FINANCING ACTIVITIES</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision at the U.S. federal statutory rate</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate" xlink:to="us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_OtherLiabilitiesNoncurrent" xlink:label="us-gaap_OtherLiabilitiesNoncurrent" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_OtherLiabilitiesNoncurrent-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other liabilities</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_OtherLiabilitiesNoncurrent" xlink:to="us-gaap_OtherLiabilitiesNoncurrent-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ThePlacementAgentWarrantsMember" xlink:label="ftek_ThePlacementAgentWarrantsMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_ThePlacementAgentWarrantsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">The Placement Agent Warrants [Member]</link:label>
    <link:label xlink:label="ftek_ThePlacementAgentWarrantsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the placement agent warrants.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ThePlacementAgentWarrantsMember" xlink:to="ftek_ThePlacementAgentWarrantsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PledgedStatusDomain" xlink:label="us-gaap_PledgedStatusDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PledgedStatusDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pledged Status [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PledgedStatusDomain" xlink:to="us-gaap_PledgedStatusDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_PledgedStatusAxis" xlink:label="us-gaap_PledgedStatusAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_PledgedStatusAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pledged Status [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_PledgedStatusAxis" xlink:to="us-gaap_PledgedStatusAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">us-gaap_StockholdersEquity</link:label>
    <link:label xlink:label="us-gaap_StockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total stockholders&#8217; equity</link:label>
    <link:label xlink:label="us-gaap_StockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance</link:label>
    <link:label xlink:label="us-gaap_StockholdersEquity-label" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StockholdersEquity" xlink:to="us-gaap_StockholdersEquity-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ClassOfWarrantOrRightWeightedAverageRemainingLife" xlink:label="ftek_ClassOfWarrantOrRightWeightedAverageRemainingLife" xlink:type="locator"/>
    <link:label xlink:label="ftek_ClassOfWarrantOrRightWeightedAverageRemainingLife-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted average remaining life (Year)</link:label>
    <link:label xlink:label="ftek_ClassOfWarrantOrRightWeightedAverageRemainingLife-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The weighted average remaining life of warrants or rights.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ClassOfWarrantOrRightWeightedAverageRemainingLife" xlink:to="ftek_ClassOfWarrantOrRightWeightedAverageRemainingLife-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ScheduleOfWarrantActivityTableTextBlock" xlink:label="ftek_ScheduleOfWarrantActivityTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_ScheduleOfWarrantActivityTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Warrant Activity [Table Text Block]</link:label>
    <link:label xlink:label="ftek_ScheduleOfWarrantActivityTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The tabular disclosure of activity in warrants outstanding.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ScheduleOfWarrantActivityTableTextBlock" xlink:to="ftek_ScheduleOfWarrantActivityTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="us-gaap_StatementClassOfStockAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_StatementClassOfStockAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_StatementClassOfStockAxis" xlink:to="us-gaap_StatementClassOfStockAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ClassOfStockDomain" xlink:label="us-gaap_ClassOfStockDomain" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ClassOfStockDomain-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Domain]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ClassOfStockDomain" xlink:to="us-gaap_ClassOfStockDomain-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_WarrantsDisclosureTextBlock" xlink:label="ftek_WarrantsDisclosureTextBlock" xlink:type="locator"/>
    <link:label xlink:label="ftek_WarrantsDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Warrants Disclosure [Text Block]</link:label>
    <link:label xlink:label="ftek_WarrantsDisclosureTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The entire disclosure of warrants.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_WarrantsDisclosureTextBlock" xlink:to="ftek_WarrantsDisclosureTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_ClassOfWarrantOrRightExercisedDuringPeriod" xlink:label="ftek_ClassOfWarrantOrRightExercisedDuringPeriod" xlink:type="locator"/>
    <link:label xlink:label="ftek_ClassOfWarrantOrRightExercisedDuringPeriod-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercised (in shares)</link:label>
    <link:label xlink:label="ftek_ClassOfWarrantOrRightExercisedDuringPeriod-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The number of warrants or rights exercised during period.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_ClassOfWarrantOrRightExercisedDuringPeriod" xlink:to="ftek_ClassOfWarrantOrRightExercisedDuringPeriod-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_The2014LongTermIncentivePlanMember" xlink:label="ftek_The2014LongTermIncentivePlanMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_The2014LongTermIncentivePlanMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">The 2014 Long-term Incentive Plan [Member]</link:label>
    <link:label xlink:label="ftek_The2014LongTermIncentivePlanMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the 2014 long-term incentive plan.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_The2014LongTermIncentivePlanMember" xlink:to="ftek_The2014LongTermIncentivePlanMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:to="us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_DeferredCompensationPlanForDirectorsMember" xlink:label="ftek_DeferredCompensationPlanForDirectorsMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_DeferredCompensationPlanForDirectorsMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Compensation Plan for Directors [Member]</link:label>
    <link:label xlink:label="ftek_DeferredCompensationPlanForDirectorsMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents the deferred compensation plan for directors.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_DeferredCompensationPlanForDirectorsMember" xlink:to="ftek_DeferredCompensationPlanForDirectorsMember-label" xlink:type="arc"/>
    <link:loc xlink:href="ftek-20221231.xsd#ftek_PaycheckProtectionProgramCaresActMember" xlink:label="ftek_PaycheckProtectionProgramCaresActMember" xlink:type="locator"/>
    <link:label xlink:label="ftek_PaycheckProtectionProgramCaresActMember-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Paycheck Protection Program CARES Act [Member]</link:label>
    <link:label xlink:label="ftek_PaycheckProtectionProgramCaresActMember-label" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Represents loan designed to provide funds for small businesses to keep their employees on the payroll.</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ftek_PaycheckProtectionProgramCaresActMember" xlink:to="ftek_PaycheckProtectionProgramCaresActMember-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted-Average Exercise Price (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1" xlink:to="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted- Average Remaining Contractual Life (Year)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2" xlink:to="us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Upper Range Limit (in dollars per share)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit" xlink:to="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Options (in shares)</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions" xlink:to="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:type="locator"/>
    <link:label xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-label" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Exercise Price Range [Axis]</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis" xlink:to="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis-label" xlink:type="arc"/>
    <link:loc xlink:href="https://xbrl.fasb.org/us-gaap/2022/elts/us-gaap-2022.xsd#us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:label="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:type="locator"/>
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    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain" xlink:to="us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeDomain-label" xlink:type="arc"/>
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</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>10
<FILENAME>ftek-20221231_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
<TEXT>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298733792">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Document And Entity Information - USD ($)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Feb. 28, 2023</div></th>
<th class="th"><div>Jun. 30, 2022</div></th>
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<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentInformationLineItems', window );"><strong>Document Information [Line Items]</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0000846913<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">FUEL TECH, INC.<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_CurrentFiscalYearEndDate', window );">Current Fiscal Year End Date</a></td>
<td class="text">--12-31<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentFiscalPeriodFocus', window );">Document Fiscal Period Focus</a></td>
<td class="text">FY<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentFiscalYearFocus', window );">Document Fiscal Year Focus</a></td>
<td class="text">2022<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentType', window );">Document Type</a></td>
<td class="text">10-K<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentAnnualReport', window );">Document Annual Report</a></td>
<td class="text">true<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentPeriodEndDate', window );">Document Period End Date</a></td>
<td class="text">Dec. 31,  2022<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_DocumentTransitionReport', window );">Document Transition Report</a></td>
<td class="text">false<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">001-33059<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityIncorporationStateCountryCode', window );">Entity Incorporation, State or Country Code</a></td>
<td class="text">DE<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">20-5657551<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressAddressLine1', window );">Entity Address, Address Line One</a></td>
<td class="text">27601 Bella Vista Parkway<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressCityOrTown', window );">Entity Address, City or Town</a></td>
<td class="text">Warrenville<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressStateOrProvince', window );">Entity Address, State or Province</a></td>
<td class="text">IL<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityAddressPostalZipCode', window );">Entity Address, Postal Zip Code</a></td>
<td class="text">60555-1617<span></span>
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<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_CityAreaCode', window );">City Area Code</a></td>
<td class="text">630<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">845-4500<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_Security12bTitle', window );">Title of 12(b) Security</a></td>
<td class="text">Common Stock<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_TradingSymbol', window );">Trading Symbol</a></td>
<td class="text">FTEK<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_SecurityExchangeName', window );">Security Exchange Name</a></td>
<td class="text">NASDAQ<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
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<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityWellKnownSeasonedIssuer', window );">Entity Well-known Seasoned Issuer</a></td>
<td class="text">No<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityVoluntaryFilers', window );">Entity Voluntary Filers</a></td>
<td class="text">No<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityCurrentReportingStatus', window );">Entity Current Reporting Status</a></td>
<td class="text">Yes<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityInteractiveDataCurrent', window );">Entity Interactive Data Current</a></td>
<td class="text">Yes<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityFilerCategory', window );">Entity Filer Category</a></td>
<td class="text">Non-accelerated Filer<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntitySmallBusiness', window );">Entity Small Business</a></td>
<td class="text">true<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
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<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
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<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_IcfrAuditorAttestationFlag', window );">ICFR Auditor Attestation Flag</a></td>
<td class="text">false<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityShellCompany', window );">Entity Shell Company</a></td>
<td class="text">false<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityPublicFloat', window );">Entity Public Float</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 32,215,406<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_EntityCommonStockSharesOutstanding', window );">Entity Common Stock, Shares Outstanding</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">30,296,297<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_AuditorName', window );">Auditor Name</a></td>
<td class="text">RSM US LLP<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_AuditorFirmId', window );">Auditor Firm ID</a></td>
<td class="text">49<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_dei_AuditorLocation', window );">Auditor Location</a></td>
<td class="text">Chicago, Illinois<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the XBRL content amends previously-filed or accepted submission.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AmendmentFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AuditorFirmId">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>PCAOB issued Audit Firm Identifier</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 10-K<br> -Number 249<br> -Section 310<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 20-F<br> -Number 249<br> -Section 220<br> -Subsection f<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 40-F<br> -Number 249<br> -Section 240<br> -Subsection f<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AuditorFirmId</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:nonemptySequenceNumberItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AuditorLocation">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 10-K<br> -Number 249<br> -Section 310<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 20-F<br> -Number 249<br> -Section 220<br> -Subsection f<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 40-F<br> -Number 249<br> -Section 240<br> -Subsection f<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AuditorLocation</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:internationalNameItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
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</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AuditorName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 10-K<br> -Number 249<br> -Section 310<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 20-F<br> -Number 249<br> -Section 220<br> -Subsection f<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 40-F<br> -Number 249<br> -Section 240<br> -Subsection f<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_AuditorName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:internationalNameItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CityAreaCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Area code of city</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CityAreaCode</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
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</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_CurrentFiscalYearEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>End date of current fiscal year in the format --MM-DD.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_CurrentFiscalYearEndDate</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td>xbrli:gMonthDayItemType</td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentAnnualReport">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true only for a form used as an annual report.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 10-K<br> -Number 249<br> -Section 310<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 20-F<br> -Number 249<br> -Section 220<br> -Subsection f<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 40-F<br> -Number 249<br> -Section 240<br> -Subsection f<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentAnnualReport</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
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</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentFiscalPeriodFocus">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Fiscal period values are FY, Q1, Q2, and Q3.  1st, 2nd and 3rd quarter 10-Q or 10-QT statements have value Q1, Q2, and Q3 respectively, with 10-K, 10-KT or other fiscal year statements having FY.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentFiscalPeriodFocus</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fiscalPeriodItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentFiscalYearFocus">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>This is focus fiscal year of the document report in YYYY format. For a 2006 annual report, which may also provide financial information from prior periods, fiscal 2006 should be given as the fiscal year focus. Example: 2006.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentFiscalYearFocus</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
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<tr>
<td><strong> Data Type:</strong></td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentInformationLineItems">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentInformationLineItems</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentPeriodEndDate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>For the EDGAR submission types of Form 8-K: the date of the report, the date of the earliest event reported; for the EDGAR submission types of Form N-1A: the filing date; for all other submission types: the end of the reporting or transition period.  The format of the date is YYYY-MM-DD.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentPeriodEndDate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:dateItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentTransitionReport">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true only for a form used as a transition report.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Forms 10-K, 10-Q, 20-F<br> -Number 240<br> -Section 13<br> -Subsection a-1<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentTransitionReport</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_DocumentType">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_DocumentType</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:submissionTypeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressAddressLine1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Address Line 1 such as Attn, Building Name, Street Name</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressAddressLine1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressCityOrTown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Name of the City or Town</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressCityOrTown</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressPostalZipCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Code for the postal or zip code</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressPostalZipCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityAddressStateOrProvince">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Name of the state or province.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityAddressStateOrProvince</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:stateOrProvinceItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCentralIndexKey">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCentralIndexKey</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:centralIndexKeyItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCommonStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Indicate number of shares or other units outstanding of each of registrant's classes of capital or common stock or other ownership interests, if and as stated on cover of related periodic report. Where multiple classes or units exist define each class/interest by adding class of stock items such as Common Class A [Member], Common Class B [Member] or Partnership Interest [Member] onto the Instrument [Domain] of the Entity Listings, Instrument.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCommonStockSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityCurrentReportingStatus">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Indicate 'Yes' or 'No' whether registrants (1) have filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that registrants were required to file such reports), and (2) have been subject to such filing requirements for the past 90 days. This information should be based on the registrant's current or most recent filing containing the related disclosure.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityCurrentReportingStatus</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:yesNoItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityEmergingGrowthCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Indicate if registrant meets the emerging growth company criteria.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityEmergingGrowthCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFileNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFileNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:fileNumberItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityFilerCategory">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Indicate whether the registrant is one of the following: Large Accelerated Filer, Accelerated Filer, Non-accelerated Filer. Definitions of these categories are stated in Rule 12b-2 of the Exchange Act. This information should be based on the registrant's current or most recent filing containing the related disclosure.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityFilerCategory</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:filerCategoryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityIncorporationStateCountryCode">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Two-character EDGAR code representing the state or country of incorporation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityIncorporationStateCountryCode</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarStateCountryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityInteractiveDataCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Regulation S-T<br> -Number 232<br> -Section 405<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityInteractiveDataCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:yesNoItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityPublicFloat">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The aggregate market value of the voting and non-voting common equity held by non-affiliates computed by reference to the price at which the common equity was last sold, or the average bid and asked price of such common equity, as of the last business day of the registrant's most recently completed second fiscal quarter.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityPublicFloat</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityRegistrantName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityRegistrantName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityShellCompany">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Boolean flag that is true when the registrant is a shell company as defined in Rule 12b-2 of the Exchange Act.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityShellCompany</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntitySmallBusiness">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Indicates that the company is a Smaller Reporting Company (SRC).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntitySmallBusiness</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityTaxIdentificationNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b-2<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityTaxIdentificationNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:employerIdItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityVoluntaryFilers">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Indicate 'Yes' or 'No' if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityVoluntaryFilers</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:yesNoItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_EntityWellKnownSeasonedIssuer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Securities Act<br> -Number 230<br> -Section 405<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_EntityWellKnownSeasonedIssuer</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:yesNoItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_IcfrAuditorAttestationFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 10-K<br> -Number 249<br> -Section 310<br><br>Reference 2: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 20-F<br> -Number 249<br> -Section 220<br> -Subsection f<br><br>Reference 3: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Form 40-F<br> -Number 249<br> -Section 240<br> -Subsection f<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_IcfrAuditorAttestationFlag</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:booleanItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_LocalPhoneNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Local phone number for entity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_LocalPhoneNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:normalizedStringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_Security12bTitle">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Title of a 12(b) registered security.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection b<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_Security12bTitle</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:securityTitleItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_SecurityExchangeName">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Name of the Exchange on which a security is registered.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/presentationRef<br> -Publisher SEC<br> -Name Exchange Act<br> -Number 240<br> -Section 12<br> -Subsection d1-1<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_SecurityExchangeName</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:edgarExchangeCodeItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_TradingSymbol">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Trading symbol of an instrument as listed on an exchange.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">dei_TradingSymbol</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>dei_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dei:tradingSymbolItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
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<SEQUENCE>13
<FILENAME>R2.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296090928">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Consolidated Balance Sheets - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AssetsCurrentAbstract', window );"><strong>Current assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsAtCarryingValue', window );">Cash and cash equivalents</a></td>
<td class="nump">$ 23,328<span></span>
</td>
<td class="nump">$ 35,893<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue', window );">Restricted cash</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">891<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShortTermInvestments', window );">Short-term investments</a></td>
<td class="nump">2,981<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AccountsReceivableNetCurrent', window );">Accounts receivable, net</a></td>
<td class="nump">7,729<span></span>
</td>
<td class="nump">3,259<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InventoryNet', window );">Inventories, net</a></td>
<td class="nump">392<span></span>
</td>
<td class="nump">348<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PrepaidExpenseAndOtherAssetsCurrent', window );">Prepaid expenses and other current assets</a></td>
<td class="nump">1,395<span></span>
</td>
<td class="nump">1,074<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AssetsCurrent', window );">Total current assets</a></td>
<td class="nump">35,825<span></span>
</td>
<td class="nump">41,465<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentNet', window );">Property and equipment, net</a></td>
<td class="nump">4,435<span></span>
</td>
<td class="nump">4,609<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Goodwill', window );">Goodwill</a></td>
<td class="nump">2,116<span></span>
</td>
<td class="nump">2,116<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IntangibleAssetsNetExcludingGoodwill', window );">Other intangible assets, net</a></td>
<td class="nump">397<span></span>
</td>
<td class="nump">448<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent', window );">Restricted cash included in long-term assets</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">270<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeaseRightOfUseAsset', window );">Right-of-use operating lease assets</a></td>
<td class="nump">197<span></span>
</td>
<td class="nump">242<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LongTermInvestments', window );">Long-term investments</a></td>
<td class="nump">6,360<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherAssetsNoncurrent', window );">Other assets</a></td>
<td class="nump">794<span></span>
</td>
<td class="nump">824<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Assets', window );">Total assets</a></td>
<td class="nump">50,124<span></span>
</td>
<td class="nump">49,974<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LiabilitiesCurrentAbstract', window );"><strong>Current liabilities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AccountsPayableCurrent', window );">Accounts payable</a></td>
<td class="nump">2,710<span></span>
</td>
<td class="nump">1,561<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AccruedLiabilitiesCurrentAbstract', window );"><strong>Accrued liabilities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeaseLiabilityCurrent', window );">Operating lease liabilities - current</a></td>
<td class="nump">125<span></span>
</td>
<td class="nump">113<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EmployeeRelatedLiabilitiesCurrent', window );">Employee compensation</a></td>
<td class="nump">1,105<span></span>
</td>
<td class="nump">688<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherAccruedLiabilitiesCurrent', window );">Other accrued liabilities</a></td>
<td class="nump">826<span></span>
</td>
<td class="nump">861<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LiabilitiesCurrent', window );">Total current liabilities</a></td>
<td class="nump">4,766<span></span>
</td>
<td class="nump">3,223<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeaseLiabilityNoncurrent', window );">Operating lease liabilities - non-current</a></td>
<td class="nump">66<span></span>
</td>
<td class="nump">122<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredIncomeTaxLiabilitiesNet', window );">Deferred income taxes</a></td>
<td class="nump">177<span></span>
</td>
<td class="nump">139<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherLiabilitiesNoncurrent', window );">Other liabilities</a></td>
<td class="nump">274<span></span>
</td>
<td class="nump">290<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Liabilities', window );">Total liabilities</a></td>
<td class="nump">5,283<span></span>
</td>
<td class="nump">3,774<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommitmentsAndContingencies', window );">Commitments and contingencies (Note 9)</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract', window );"><strong>Stockholders&#8217; equity:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommonStockValue', window );">Common stock, $.01 par value, 40,000,000 shares authorized, 31,272,303 and 31,227,300 shares issued, and 30,296,297 and 30,263,791 shares outstanding in 2022 and 2021, respectively</a></td>
<td class="nump">313<span></span>
</td>
<td class="nump">312<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AdditionalPaidInCapitalCommonStock', window );">Additional paid-in capital</a></td>
<td class="nump">164,422<span></span>
</td>
<td class="nump">164,199<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RetainedEarningsAccumulatedDeficit', window );">Accumulated deficit</a></td>
<td class="num">(115,991)<span></span>
</td>
<td class="num">(114,549)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax', window );">Accumulated other comprehensive loss</a></td>
<td class="num">(1,728)<span></span>
</td>
<td class="num">(1,604)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ConvertibleDebt', window );">Nil coupon perpetual loan notes</a></td>
<td class="nump">76<span></span>
</td>
<td class="nump">76<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TreasuryStockValue', window );">Treasury stock, at cost (Note 5)</a></td>
<td class="num">(2,251)<span></span>
</td>
<td class="num">(2,234)<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Total stockholders&#8217; equity</a></td>
<td class="nump">44,841<span></span>
</td>
<td class="nump">46,200<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LiabilitiesAndStockholdersEquity', window );">Total liabilities and stockholders&#8217; equity</a></td>
<td class="nump">$ 50,124<span></span>
</td>
<td class="nump">$ 49,974<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsPayableCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19(a))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsPayableCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsReceivableNetCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=124259787&amp;loc=d3e4428-111522<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 45<br> -Paragraph 9<br> -URI https://asc.fasb.org/extlink&amp;oid=124259787&amp;loc=d3e4531-111522<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsReceivableNetCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccruedLiabilitiesCurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccruedLiabilitiesCurrentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30)(a)(4))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 11<br> -URI https://asc.fasb.org/extlink&amp;oid=126968391&amp;loc=d3e637-108580<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(23)(a)(3))<br> -URI https://asc.fasb.org/extlink&amp;oid=126734703&amp;loc=d3e572229-122910<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14A<br> -URI https://asc.fasb.org/extlink&amp;oid=126968391&amp;loc=SL7669686-108580<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 40<br> -Section 65<br> -Paragraph 2<br> -Subparagraph (h)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=124501264&amp;loc=SL117420844-207641<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 40<br> -Section 65<br> -Paragraph 2<br> -Subparagraph (g)(2)(ii)<br> -URI https://asc.fasb.org/extlink&amp;oid=124501264&amp;loc=SL117420844-207641<br><br>Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -URI https://asc.fasb.org/extlink&amp;oid=126968391&amp;loc=d3e681-108580<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdditionalPaidInCapitalCommonStock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30)(a)(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdditionalPaidInCapitalCommonStock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Assets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(11))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iii)(A))<br> -URI 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-Subparagraph (d)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 20: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=116870748&amp;loc=SL6758485-165988<br><br>Reference 21: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iv))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 22: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(18))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 23: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br><br>Reference 24: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Assets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all assets that are expected to be realized in cash, sold, or consumed within one year (or the normal operating cycle, if longer). Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=124098289&amp;loc=d3e6676-107765<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 50<br> -Paragraph 7<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124433192&amp;loc=SL2890621-112765<br><br>Reference 4: 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-Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br><br>Reference 14: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(ii))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 15: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(5))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 16: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (bb)<br> -URI https://asc.fasb.org/extlink&amp;oid=123419778&amp;loc=d3e5710-111685<br><br>Reference 17: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(iv))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 18: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(9))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 19: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI 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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsCurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsCurrentAbstract</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3044-108585<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124098289&amp;loc=d3e6676-107765<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsAtCarryingValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommitmentsAndContingencies">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Represents the caption on the face of the balance sheet to indicate that the entity has entered into (1) purchase or supply arrangements that will require expending a portion of its resources to meet the terms thereof, and (2) is exposed to potential losses or, less frequently, gains, arising from (a) possible claims against a company's resources due to future performance under contract terms, and (b) possible losses or likely gains from uncertainties that will ultimately be resolved when one or more future events that are deemed likely to occur do occur or fail to occur.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.25)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03.(a),19)<br> -URI https://asc.fasb.org/extlink&amp;oid=126734703&amp;loc=d3e572229-122910<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03.17)<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommitmentsAndContingencies</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ConvertibleDebt">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Including the current and noncurrent portions, carrying amount of debt identified as being convertible into another form of financial instrument (typically the entity's common stock) as of the balance sheet date, which originally required full repayment more than twelve months after issuance or greater than the normal operating cycle of the company.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(16))<br> -URI https://asc.fasb.org/extlink&amp;oid=126734703&amp;loc=d3e572229-122910<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(22))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(16))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ConvertibleDebt</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredIncomeTaxLiabilitiesNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=123427490&amp;loc=d3e31931-109318<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=123427490&amp;loc=d3e31917-109318<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredIncomeTaxLiabilitiesNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EmployeeRelatedLiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EmployeeRelatedLiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Goodwill">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121556970&amp;loc=d3e13816-109267<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(10)(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (h)<br> -URI https://asc.fasb.org/extlink&amp;oid=121556970&amp;loc=d3e13816-109267<br><br>Reference 4: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 55<br> -Paragraph 24<br> -URI https://asc.fasb.org/extlink&amp;oid=122137925&amp;loc=d3e14258-109268<br><br>Reference 5: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=99380562&amp;loc=d3e13770-109266<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(15))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Goodwill</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IntangibleAssetsNetExcludingGoodwill">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph ((a)(1),(b))<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6388964&amp;loc=d3e16212-109274<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IntangibleAssetsNetExcludingGoodwill</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InventoryNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(6))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=124098289&amp;loc=d3e6676-107765<br><br>Reference 3: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InventoryNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Liabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19-26)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 50<br> -Paragraph 7<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124433192&amp;loc=SL2890621-112765<br><br>Reference 3: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (d)<br> -URI 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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Liabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesAndStockholdersEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of liabilities and equity items, including the portion of equity attributable to noncontrolling interests, if any.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(23))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(25))<br> -URI https://asc.fasb.org/extlink&amp;oid=126734703&amp;loc=d3e572229-122910<br><br>Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(32))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=123596393&amp;loc=d3e14064-108612<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesAndStockholdersEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 50<br> -Paragraph 7<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124433192&amp;loc=SL2890621-112765<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iii)(A))<br> -URI 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https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 19: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=123596393&amp;loc=d3e14064-108612<br><br>Reference 20: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=124098289&amp;loc=d3e6904-107765<br><br>Reference 21: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.21)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LiabilitiesCurrentAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LiabilitiesCurrentAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongTermInvestments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(12))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongTermInvestments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseLiabilityCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=123391704&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseLiabilityCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseLiabilityNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=123391704&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseLiabilityNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseRightOfUseAsset">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of lessee's right to use underlying asset under operating lease.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=123391704&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseRightOfUseAsset</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherAccruedLiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherAccruedLiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherAssetsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of noncurrent assets classified as other.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(17))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherAssetsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherLiabilitiesNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.24)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherLiabilitiesNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PrepaidExpenseAndOtherAssetsCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(9))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PrepaidExpenseAndOtherAssetsCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(8))<br> -URI https://asc.fasb.org/extlink&amp;oid=126734703&amp;loc=d3e572229-122910<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 360<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=124429447&amp;loc=SL124453093-239630<br><br>Reference 4: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3044-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=126999549&amp;loc=SL98516268-108586<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=126999549&amp;loc=SL98516268-108586<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3044-108585<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 954<br> -SubTopic 210<br> -Section 45<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=120413173&amp;loc=SL116631458-115580<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RestrictedCashAndCashEquivalentsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RetainedEarningsAccumulatedDeficit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The cumulative amount of the reporting entity's undistributed earnings or deficit.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30)(a)(3))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(23)(a)(4))<br> -URI https://asc.fasb.org/extlink&amp;oid=126734703&amp;loc=d3e572229-122910<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 40<br> -Section 65<br> -Paragraph 2<br> -Subparagraph (h)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=124501264&amp;loc=SL117420844-207641<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 40<br> -Section 65<br> -Paragraph 2<br> -Subparagraph (g)(2)(i)<br> -URI https://asc.fasb.org/extlink&amp;oid=124501264&amp;loc=SL117420844-207641<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RetainedEarningsAccumulatedDeficit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShortTermInvestments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of investments including trading securities, available-for-sale securities, held-to-maturity securities, and short-term investments classified as other and current.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(4))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(5))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(8))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(1)(g))<br> -URI https://asc.fasb.org/extlink&amp;oid=126734703&amp;loc=d3e572229-122910<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShortTermInvestments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SAB Topic 4.E)<br> -URI https://asc.fasb.org/extlink&amp;oid=122038336&amp;loc=d3e74512-122707<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(31))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=123596393&amp;loc=d3e14064-108612<br><br>Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockholdersEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TreasuryStockValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 30<br> -Section 50<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=6405834&amp;loc=d3e23315-112656<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.29,30)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 30<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6405813&amp;loc=d3e23239-112655<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TreasuryStockValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>14
<FILENAME>R3.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296081024">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Consolidated Balance Sheets (Parentheticals) - $ / shares<br></strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommonStockParOrStatedValuePerShare', window );">Common stock, par value (in dollars per share)</a></td>
<td class="nump">$ 0.01<span></span>
</td>
<td class="nump">$ 0.01<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommonStockSharesAuthorized', window );">Common stock, shares authorized (in shares)</a></td>
<td class="nump">40,000,000<span></span>
</td>
<td class="nump">40,000,000<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Common stock, shares issued (in shares)</a></td>
<td class="nump">31,272,303<span></span>
</td>
<td class="nump">31,227,300<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommonStockSharesOutstanding', window );">Common stock, shares outstanding (in shares)</a></td>
<td class="nump">30,296,297<span></span>
</td>
<td class="nump">30,263,791<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockParOrStatedValuePerShare">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Face amount or stated value per share of common stock.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockParOrStatedValuePerShare</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesAuthorized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The maximum number of common shares permitted to be issued by an entity's charter and bylaws.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesAuthorized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesIssued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesIssued</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>15
<FILENAME>R4.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298602032">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Consolidated Statements of Operations - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">$ 26,941<span></span>
</td>
<td class="nump">$ 24,261<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CostsAndExpensesAbstract', window );"><strong>Costs and expenses:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CostOfRevenue', window );">Cost of sales</a></td>
<td class="nump">15,298<span></span>
</td>
<td class="nump">12,363<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SellingGeneralAndAdministrativeExpense', window );">Selling, general and administrative</a></td>
<td class="nump">12,275<span></span>
</td>
<td class="nump">12,055<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ResearchAndDevelopmentExpense', window );">Research and development</a></td>
<td class="nump">895<span></span>
</td>
<td class="nump">1,332<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CostsAndExpenses', window );">Total costs and expenses</a></td>
<td class="nump">28,468<span></span>
</td>
<td class="nump">25,750<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating loss</a></td>
<td class="num">(1,527)<span></span>
</td>
<td class="num">(1,489)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InterestExpense', window );">Interest expense</a></td>
<td class="num">(17)<span></span>
</td>
<td class="num">(19)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InvestmentIncomeInterest', window );">Interest income</a></td>
<td class="nump">202<span></span>
</td>
<td class="nump">6<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherNonoperatingIncomeExpense', window );">Other (expense) income, net</a></td>
<td class="num">(46)<span></span>
</td>
<td class="nump">1,570<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest', window );">(Loss) income before income taxes</a></td>
<td class="num">(1,388)<span></span>
</td>
<td class="nump">68<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncomeTaxExpenseBenefit', window );">Income tax expense</a></td>
<td class="num">(54)<span></span>
</td>
<td class="num">(14)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net (loss) income</a></td>
<td class="num">$ (1,442)<span></span>
</td>
<td class="nump">$ 54<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EarningsPerShareAbstract', window );"><strong>Net (loss) income per common share:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EarningsPerShareBasic', window );">Basic net (loss) income per common share (in dollars per share)</a></td>
<td class="num">$ (0.05)<span></span>
</td>
<td class="nump">$ 0.00<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EarningsPerShareDiluted', window );">Diluted net (loss) income per common share (in dollars per share)</a></td>
<td class="num">$ (0.05)<span></span>
</td>
<td class="nump">$ 0.00<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract', window );"><strong>Weighted-average number of common shares outstanding:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic', window );">Basic weighted-average shares (in shares)</a></td>
<td class="nump">30,289,000<span></span>
</td>
<td class="nump">29,585,000<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding', window );">Diluted (in shares)</a></td>
<td class="nump">30,289,000<span></span>
</td>
<td class="nump">29,694,000<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CostOfRevenue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The aggregate cost of goods produced and sold and services rendered during the reporting period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(5))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=123596393&amp;loc=d3e14064-108612<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(iv))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2)<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(5))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(i))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iii)(B))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iii)(A))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(i))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 12: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(iii)(A))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 13: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(ii))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 14: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iv))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CostOfRevenue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CostsAndExpenses">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Total costs of sales and operating expenses for the period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03)<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CostsAndExpenses</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CostsAndExpensesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CostsAndExpensesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EarningsPerShareAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareBasic">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 40<br> -Section 65<br> -Paragraph 1<br> -Subparagraph (e)(4)<br> -URI https://asc.fasb.org/extlink&amp;oid=126732423&amp;loc=SL123482106-238011<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22583-107794<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 11<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22694-107794<br><br>Reference 4: 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-SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(25))<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br><br>Reference 15: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1252-109256<br><br>Reference 16: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 60B<br> -Subparagraph (d)<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=SL5780133-109256<br><br>Reference 17: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(27))<br> -URI https://asc.fasb.org/extlink&amp;oid=120399700&amp;loc=SL114874048-224260<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EarningsPerShareBasic</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerShareDiluted">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 55<br> -Paragraph 52<br> -URI https://asc.fasb.org/extlink&amp;oid=128363288&amp;loc=d3e4984-109258<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 7<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22644-107794<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 55<br> -Paragraph 15<br> -URI https://asc.fasb.org/extlink&amp;oid=128363288&amp;loc=d3e3842-109258<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1252-109256<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 11<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22694-107794<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22595-107794<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22583-107794<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 60B<br> -Subparagraph (d)<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=SL5780133-109256<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 40<br> -Section 65<br> -Paragraph 1<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126732423&amp;loc=SL123482106-238011<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(27))<br> -URI https://asc.fasb.org/extlink&amp;oid=120399700&amp;loc=SL114874048-224260<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124432515&amp;loc=d3e3550-109257<br><br>Reference 12: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(23))<br> -URI https://asc.fasb.org/extlink&amp;oid=120400993&amp;loc=SL114874131-224263<br><br>Reference 13: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 11<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22694-107794<br><br>Reference 14: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 7<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1337-109256<br><br>Reference 15: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 815<br> -SubTopic 40<br> -Section 65<br> -Paragraph 1<br> -Subparagraph (e)(4)<br> -URI https://asc.fasb.org/extlink&amp;oid=126732423&amp;loc=SL123482106-238011<br><br>Reference 16: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(25))<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EarningsPerShareDiluted</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 940<br> -SubTopic 20<br> -Section 25<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=126941158&amp;loc=d3e41242-110953<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(10))<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br><br>Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(8))<br> -URI https://asc.fasb.org/extlink&amp;oid=120400993&amp;loc=SL114874131-224263<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 235<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-05(b)(2))<br> -URI https://asc.fasb.org/extlink&amp;oid=120399901&amp;loc=d3e537907-122884<br><br>Reference 9: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 31<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8924-108599<br><br>Reference 10: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(15))<br> -URI https://asc.fasb.org/extlink&amp;oid=120399700&amp;loc=SL114874048-224260<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB TOPIC 6.I.7)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32672-109319<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (h)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22663-107794<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 20<br> -Section 45<br> -Paragraph 2<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=123586238&amp;loc=d3e38679-109324<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(9))<br> -URI https://asc.fasb.org/extlink&amp;oid=120400993&amp;loc=SL114874131-224263<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22658-107794<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxExpenseBenefit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InterestExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of the cost of borrowed funds accounted for as interest expense.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=6450988&amp;loc=d3e26243-108391<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 45<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=124435984&amp;loc=d3e28555-108399<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (d)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (210.5-03(11))<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04.9)<br> -URI https://asc.fasb.org/extlink&amp;oid=120399700&amp;loc=SL114874048-224260<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InterestExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InvestmentIncomeInterest">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before accretion (amortization) of purchase discount (premium) of interest income on nonoperating securities.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.7(b))<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentIncomeInterest</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(22))<br> -URI https://asc.fasb.org/extlink&amp;oid=120399700&amp;loc=SL114874048-224260<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI 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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The net result for the period of deducting operating expenses from operating revenues.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 31<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8924-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherNonoperatingIncomeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of income (expense) related to nonoperating activities, classified as other.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.9)<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherNonoperatingIncomeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
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</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ResearchAndDevelopmentExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 912<br> -SubTopic 730<br> -Section 25<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6472174&amp;loc=d3e58812-109433<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 985<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6501960&amp;loc=d3e128462-111756<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 730<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6420194&amp;loc=d3e21568-108373<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ResearchAndDevelopmentExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 40<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9031-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 41<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9038-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130543-203045<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 42<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9054-108599<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130545-203045<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 924<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 11.L)<br> -URI https://asc.fasb.org/extlink&amp;oid=6472922&amp;loc=d3e499488-122856<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SellingGeneralAndAdministrativeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.4)<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SellingGeneralAndAdministrativeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124432515&amp;loc=d3e3550-109257<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 16<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1505-109256<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124432515&amp;loc=d3e3550-109257<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1448-109256<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageNumberOfSharesOutstandingBasic</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298635344">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Consolidated Statements of Comprehensive Loss - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
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<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="num">$ (1,442)<span></span>
</td>
<td class="nump">$ 54<span></span>
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</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract', window );"><strong>Other comprehensive loss:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax', window );">Foreign currency translation adjustments</a></td>
<td class="num">(124)<span></span>
</td>
<td class="num">(234)<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossNetOfTax', window );">Total other comprehensive loss</a></td>
<td class="num">(124)<span></span>
</td>
<td class="num">(234)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ComprehensiveIncomeNetOfTax', window );">Comprehensive loss</a></td>
<td class="num">$ (1,566)<span></span>
</td>
<td class="num">$ (180)<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ComprehensiveIncomeNetOfTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(22))<br> -URI https://asc.fasb.org/extlink&amp;oid=120400993&amp;loc=SL114874131-224263<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(24))<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=126968391&amp;loc=d3e557-108580<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(26))<br> -URI https://asc.fasb.org/extlink&amp;oid=120399700&amp;loc=SL114874048-224260<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1B<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126968391&amp;loc=SL7669625-108580<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1A<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126968391&amp;loc=SL7669619-108580<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ComprehensiveIncomeNetOfTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(22))<br> -URI https://asc.fasb.org/extlink&amp;oid=120399700&amp;loc=SL114874048-224260<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI 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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 10A<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126968391&amp;loc=SL7669646-108580<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after tax and reclassification adjustments of other comprehensive income (loss).</p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherComprehensiveIncomeLossNetOfTax</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecreaseAbstract</td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298384832">
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<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Consolidated Statements of Stockholders' Equity - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Common Stock Outstanding [Member]</div></th>
<th class="th"><div>Additional Paid-in Capital [Member]</div></th>
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<td class="num">$ (1,370)<span></span>
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<td class="nump">$ 76<span></span>
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<td class="num">$ (2,182)<span></span>
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</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net income (loss)</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="nump">54<span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="nump">54<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax', window );">Foreign currency translation adjustments</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="num">(234)<span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="num">(234)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue', window );">Stock compensation expense</a></td>
<td class="text"> <span></span>
</td>
<td class="nump">82<span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="nump">82<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues', window );">Common stock issued in connection with private placement, net (in shares)</a></td>
<td class="nump">5,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueNewIssues', window );">Common stock issued in connection with private placement, net</a></td>
<td class="nump">$ 50<span></span>
</td>
<td class="nump">23,979<span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="nump">24,029<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross', window );">Common stock issued upon vesting of restricted stock units (in shares)</a></td>
<td class="nump">50,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross', window );">Common stock issued upon vesting of restricted stock units</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TreasuryStockSharesAcquired', window );">Treasury shares withheld (in shares)</a></td>
<td class="num">(15,000)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">15,162<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TreasuryStockValueAcquiredCostMethod', window );">Treasury shares withheld</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="num">(52)<span></span>
</td>
<td class="num">$ (52)<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharesOutstanding', window );">Balance (in shares) at Dec. 31, 2021</a></td>
<td class="nump">30,264,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance at Dec. 31, 2021</a></td>
<td class="nump">$ 312<span></span>
</td>
<td class="nump">164,199<span></span>
</td>
<td class="num">(114,549)<span></span>
</td>
<td class="num">(1,604)<span></span>
</td>
<td class="nump">76<span></span>
</td>
<td class="num">(2,234)<span></span>
</td>
<td class="nump">46,200<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net income (loss)</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="num">(1,442)<span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="num">(1,442)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax', window );">Foreign currency translation adjustments</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="num">(124)<span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="num">(124)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue', window );">Stock compensation expense</a></td>
<td class="text"> <span></span>
</td>
<td class="nump">224<span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="nump">224<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross', window );">Common stock issued upon vesting of restricted stock units (in shares)</a></td>
<td class="nump">45,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross', window );">Common stock issued upon vesting of restricted stock units</a></td>
<td class="nump">$ 1<span></span>
</td>
<td class="num">(1)<span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TreasuryStockSharesAcquired', window );">Treasury shares withheld (in shares)</a></td>
<td class="num">(13,000)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">12,497<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TreasuryStockValueAcquiredCostMethod', window );">Treasury shares withheld</a></td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="text"> <span></span>
</td>
<td class="num">(17)<span></span>
</td>
<td class="num">$ (17)<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharesOutstanding', window );">Balance (in shares) at Dec. 31, 2022</a></td>
<td class="nump">30,296,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rc">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance at Dec. 31, 2022</a></td>
<td class="nump">$ 313<span></span>
</td>
<td class="nump">$ 164,422<span></span>
</td>
<td class="num">$ (115,991)<span></span>
</td>
<td class="num">$ (1,728)<span></span>
</td>
<td class="nump">$ 76<span></span>
</td>
<td class="num">$ (2,251)<span></span>
</td>
<td class="nump">$ 44,841<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of increase to additional paid-in capital (APIC) for recognition of cost for award under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 20<br> -Section 55<br> -Paragraph 12<br> -URI https://asc.fasb.org/extlink&amp;oid=126964447&amp;loc=d3e11149-113907<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 20<br> -Section 55<br> -Paragraph 13<br> -URI https://asc.fasb.org/extlink&amp;oid=126964447&amp;loc=d3e11178-113907<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 35<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126961718&amp;loc=d3e4534-113899<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
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Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iii)(A))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 34: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 35: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 10A<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126968391&amp;loc=SL7669646-108580<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of shares issued which are neither cancelled nor held in the treasury.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of new stock issued during the period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodSharesNewIssues</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Total number of shares issued during the period, including shares forfeited, as a result of Restricted Stock Awards.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodValueNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Equity impact of the value of new stock issued during the period. Includes shares issued in an initial public offering or a secondary public offering.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodValueNewIssues</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Aggregate value of stock related to Restricted Stock Awards issued during the period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SAB Topic 4.E)<br> -URI https://asc.fasb.org/extlink&amp;oid=122038336&amp;loc=d3e74512-122707<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(31))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=123596393&amp;loc=d3e14064-108612<br><br>Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockholdersEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TreasuryStockSharesAcquired">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of shares that have been repurchased during the period and are being held in treasury.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TreasuryStockSharesAcquired</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TreasuryStockValueAcquiredCostMethod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 30<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6405813&amp;loc=d3e23239-112655<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TreasuryStockValueAcquiredCostMethod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296142464">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Consolidated Statements of Cash Flows - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract', window );"><strong>OPERATING ACTIVITIES</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="num">$ (1,442)<span></span>
</td>
<td class="nump">$ 54<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract', window );"><strong>Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Depreciation', window );">Depreciation</a></td>
<td class="nump">352<span></span>
</td>
<td class="nump">584<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AdjustmentForAmortization', window );">Amortization</a></td>
<td class="nump">88<span></span>
</td>
<td class="nump">157<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_GainLossOnSaleOfPropertyPlantEquipment', window );">Loss on sale of equipment</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">54<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InterestAndDividendIncomeSecuritiesHeldToMaturity', window );">Non-cash interest income on held-to-maturity securities</a></td>
<td class="num">(5)<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ProvisionForDoubtfulAccounts', window );">Provision for doubtful accounts, net of recoveries</a></td>
<td class="num">(106)<span></span>
</td>
<td class="num">(619)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredIncomeTaxesAndTaxCredits', window );">Deferred income taxes</a></td>
<td class="nump">38<span></span>
</td>
<td class="nump">5<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensation', window );">Stock-based compensation, net of forfeitures</a></td>
<td class="nump">224<span></span>
</td>
<td class="nump">82<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract', window );"><strong>Changes in operating assets and liabilities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccountsReceivable', window );">Accounts receivable</a></td>
<td class="num">(4,448)<span></span>
</td>
<td class="nump">3,794<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInInventories', window );">Inventories</a></td>
<td class="num">(45)<span></span>
</td>
<td class="num">(252)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets', window );">Prepaid expenses, other current assets and other non-current assets</a></td>
<td class="num">(314)<span></span>
</td>
<td class="nump">634<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccountsPayable', window );">Accounts payable</a></td>
<td class="nump">1,159<span></span>
</td>
<td class="num">(772)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInAccruedLiabilities', window );">Accrued liabilities and other non-current liabilities</a></td>
<td class="nump">360<span></span>
</td>
<td class="num">(1,404)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInOperatingActivities', window );">Net cash (used in) provided by operating activities</a></td>
<td class="num">(4,139)<span></span>
</td>
<td class="nump">761<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract', window );"><strong>INVESTING ACTIVITIES</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PaymentsToAcquireProductiveAssets', window );">Purchases of equipment and patents</a></td>
<td class="num">(206)<span></span>
</td>
<td class="num">(84)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PaymentsToAcquireHeldToMaturitySecurities', window );">Purchases of debt securities</a></td>
<td class="num">(9,777)<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities', window );">Maturities of debt securities</a></td>
<td class="nump">500<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInInvestingActivities', window );">Net cash used in investing activities</a></td>
<td class="num">(9,483)<span></span>
</td>
<td class="num">(84)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract', window );"><strong>FINANCING ACTIVITIES</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement', window );">Proceeds from sale of common stock issued in connection with private placement</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">25,812<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PaymentsOfStockIssuanceCosts', window );">Costs related to sale of common stock issued in connection with private placement</a></td>
<td class="nump">0<span></span>
</td>
<td class="num">(1,783)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PaymentsForRepurchaseOfEquity', window );">Taxes paid on behalf of equity award participants</a></td>
<td class="num">(17)<span></span>
</td>
<td class="num">(52)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetCashProvidedByUsedInFinancingActivities', window );">Net cash (used in) provided by financing activities</a></td>
<td class="num">(17)<span></span>
</td>
<td class="nump">23,977<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents', window );">Effect of exchange rate fluctuations on cash</a></td>
<td class="num">(87)<span></span>
</td>
<td class="num">(206)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect', window );">Net (decrease) increase in cash, cash equivalents and restricted cash</a></td>
<td class="num">(13,726)<span></span>
</td>
<td class="nump">24,448<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations', window );">Cash, cash equivalents and restricted cash at beginning of period</a></td>
<td class="nump">37,054<span></span>
</td>
<td class="nump">12,606<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations', window );">Cash, cash equivalents and restricted cash at end of period</a></td>
<td class="nump">23,328<span></span>
</td>
<td class="nump">37,054<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SupplementalCashFlowInformationAbstract', window );"><strong>Supplemental Cash Flow Information:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncomeTaxesPaidNet', window );">Cash income taxes paid (received), net</a></td>
<td class="nump">14<span></span>
</td>
<td class="num">(51)<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=ftek_PaycheckProtectionProgramCaresActMember', window );">Paycheck Protection Program CARES Act [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract', window );"><strong>Adjustments to reconcile net (loss) income to net cash (used in) provided by operating activities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_GainsLossesOnExtinguishmentOfDebt', window );">Gain of forgiveness on Paycheck Protection Plan Loan</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="num">$ (1,556)<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentForAmortization">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentForAmortization</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including, but not limited to, disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=126999549&amp;loc=SL98516268-108586<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3521-108585<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3044-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in cash, cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; including effect from exchange rate change. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 830<br> -SubTopic 230<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=123444420&amp;loc=d3e33268-110906<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredIncomeTaxesAndTaxCredits">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred income tax expense (benefit) and income tax credits.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredIncomeTaxesAndTaxCredits</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Depreciation">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Depreciation</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) from effect of exchange rate changes on cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage; held in foreign currencies. Excludes amounts for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 830<br> -SubTopic 230<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=123444420&amp;loc=d3e33268-110906<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GainLossOnSaleOfPropertyPlantEquipment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_GainLossOnSaleOfPropertyPlantEquipment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GainsLossesOnExtinguishmentOfDebt">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 50<br> -Section 40<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=126972273&amp;loc=d3e12355-112629<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 50<br> -Section 40<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126972273&amp;loc=d3e12317-112629<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_GainsLossesOnExtinguishmentOfDebt</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxesPaidNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount of cash paid during the current period to foreign, federal, state, and local authorities as taxes on income, net of any cash received during the current period as refunds for the overpayment of taxes.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126999549&amp;loc=d3e4297-108586<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxesPaidNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccountsPayable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the aggregate amount of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInAccountsPayable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
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</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccountsReceivable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInAccountsReceivable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
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</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInAccruedLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInAccruedLiabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
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<tr>
<td><strong> Balance Type:</strong></td>
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<tr>
<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the aggregate value of all inventory held by the reporting entity, associated with underlying transactions that are classified as operating activities.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInInventories</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInOperatingCapitalAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in prepaid expenses, and assets classified as other.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InterestAndDividendIncomeSecuritiesHeldToMaturity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of operating interest income, including amortization and accretion of premiums and discounts, on held-to-maturity securities.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InterestAndDividendIncomeSecuritiesHeldToMaturity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInFinancingActivities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInFinancingActivities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInInvestingActivities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3521-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInInvestingActivities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInOperatingActivities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow (outflow) from operating activities, including discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3536-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3521-108585<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInOperatingActivities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(22))<br> -URI https://asc.fasb.org/extlink&amp;oid=120399700&amp;loc=SL114874048-224260<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI 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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsForRepurchaseOfEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The cash outflow to reacquire common and preferred stock.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3291-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsForRepurchaseOfEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsOfStockIssuanceCosts">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The cash outflow for cost incurred directly with the issuance of an equity security.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3291-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsOfStockIssuanceCosts</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsToAcquireHeldToMaturitySecurities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash outflow through purchase of long-term held-to-maturity securities.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 13<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3213-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 45<br> -Paragraph 11<br> -URI https://asc.fasb.org/extlink&amp;oid=124260329&amp;loc=d3e26853-111562<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsToAcquireHeldToMaturitySecurities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsToAcquireProductiveAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 13<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3213-108585<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 805<br> -SubTopic 50<br> -Section 30<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=126928898&amp;loc=d3e9212-128498<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 805<br> -SubTopic 50<br> -Section 30<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126928898&amp;loc=d3e9215-128498<br><br>Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 805<br> -SubTopic 50<br> -Section 25<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=127000608&amp;loc=d3e9135-128495<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsToAcquireProductiveAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceOfPrivatePlacement</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfHeldToMaturitySecurities">
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050380089392">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
</tr>
<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DisclosureTextBlockAbstract', window );"><strong>Notes to Financial Statements</strong></a></td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">1.</em></b>&#160;&#160;&#160;&#160;&#160;<b>ORGANIZATION AND SIGNIFICANT ACCOUNTING POLICIES&#160;&#160;&#160;&#160;&#160;</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Organization</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech, Inc. and subsidiaries ("Fuel Tech", the "Company", "we", "us" or "our") develops and provides proprietary technologies for air pollution control, process optimization, water treatment, and advanced engineering services. Our primary focus is on the worldwide marketing and sale of Air Pollution Control (APC) technologies and our FUEL CHEM program.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The Company&#8217;s nitrogen oxide (NOx) reduction technologies reduce nitrogen oxide emissions from boilers, furnaces and other stationary combustion sources. To reduce NOx emissions, our technologies utilize advanced combustion modification techniques and post-combustion NOx control approaches including non-catalytic, catalytic and combined systems.&#160; The Company also provides solutions for the mitigation of particulate matter, including particulate control with electrostatic precipitator products and services, and using Flue Gas Conditioning (FGC) systems which modify the ash properties of particulate for improved collection efficiency. Our FUEL CHEM program is based on proprietary TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#174;</sup> Targeted In-Furnace&#8482; Injection technology, in combination with advanced Computational Fluid Dynamics (CFD) and Chemical Kinetics Modeling (CKM) boiler modeling, in the unique application of specialty chemicals to improve the efficiency, reliability, fuel flexibility, boiler heat rate, and environmental status of combustion units by controlling slagging, fouling, corrosion, and opacity. Water treatment technologies include DGI&#8482; Dissolved Gas Infusion Systems which utilize a patent-pending channel injector to deliver supersaturated oxygen solutions and other gas-water combinations to target process applications or environmental issues. This infusion process has a variety of applications in the water and wastewater segments, including irrigation, treatment of natural waters, supply of oxygen for biological remediation, and wastewater odor management.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our business is materially dependent on the continued existence and enforcement of air quality regulations, particularly in the U.S. We have expended significant resources in the research and development of new technologies in building our proprietary portfolio of air pollution control, fuel and boiler treatment chemicals, computer modeling and advanced visualization technologies.&#160;Many of Fuel Tech's products and services rely heavily on the Company's CFD modeling capabilities, which are enhanced by internally developed, high-end visualization software.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">International revenues were $6,630&#160;and&#160;$4,746&#160;for the years ended <em style="font: inherit;"> December 31, 2022</em>&#160;and&#160;<em style="font: inherit;">2021</em>, respectively. These amounts represented 25%&#160;and 20%&#160;of Fuel Tech&#8217;s total revenues for the respective periods of time. Foreign currency changes did <em style="font: inherit;">not</em> have a material impact on the calculation of these percentages. We have foreign offices in Beijing, China and Gallarate, Italy.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Basis of Presentation</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The consolidated financial statements include the accounts of Fuel Tech and its wholly owned subsidiaries.&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (GAAP). The books and records of subsidiaries located in foreign countries are maintained according to generally accepted accounting principles in those countries. Upon consolidation, the Company evaluates the differences in accounting principles and determines whether adjustments are necessary to convert the foreign financial statements to the accounting principles upon which the consolidated financial statements are based. All intercompany transactions have been eliminated.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">On the Consolidated Statements of Operations of this Annual Report on Form <em style="font: inherit;">10</em>-K, the presentation of interest income has been updated for <em style="font: inherit;">2021</em> to conform to the current year's presentation. The amount for interest income was previously presented with interest expense under the caption Interest expense, net on the Consolidated Statements of Operations.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"/>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>COVID-<em style="font: inherit;">19</em> Pandemic and Geopolitical Events</b></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The effects of the coronavirus (COVID-<em style="font: inherit;">19</em>) global pandemic have presented&#160;significant risks to the Company that have had direct and indirect impacts on our results of operations&#160;during the <em style="font: inherit;">twelve</em> months ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>.&#160;Although the impact of the pandemic is difficult to isolate and quantify, the Company has experienced, and <em style="font: inherit;"> may </em>continue to experience, supply chain issues, travel restrictions, and reductions in demand for certain of products&#160;due to the delay or abandonment of ongoing or anticipated projects&#160;due to our customers', suppliers' and other <em style="font: inherit;">third</em> parties' financial distress or concern regarding the volatility of global markets.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Geopolitical events and global economic sanctions resulting from the ongoing conflict between Russia and Ukraine <em style="font: inherit;"> may </em>impact new or existing projects and the prices and availability of raw materials, energy and other materials. These events <em style="font: inherit;"> may </em>also impact energy and regulatory policy nationally or regionally for the impacted regions. In addition, we have experienced and are experiencing varying levels of inflation resulting in part from increased shipping and transportation costs, raw material costs, and labor costs.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Management cannot&#160;predict the full impact of the COVID-<em style="font: inherit;">19</em> pandemic and geopolitical events on the Company's sales and marketing channels and supply chains, and, as a result, the ultimate extent of the effects on the Company are highly uncertain and will depend on future developments. Such effects could exist for an extended period of time. The Company continues to monitor the potential impacts on the business.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>



   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Private Placement Offering</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> February 11, 2021, </em>Fuel Tech entered into a securities purchase agreement (the &#8220;Purchase Agreement&#8221;) with certain institutional investors pursuant to which the Company agreed to issue and sell, in a private placement (the &#8220;Private Placement&#8221;), (i) 5,000,000 shares (the &#8220;Shares&#8221;) of common stock, (ii) and 2,500,000 warrants (the &#8220;Warrants&#8221;) exercisable for a total of 2,500,000 shares of common stock (the &#8220;Warrant Shares&#8221;) with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were $25,812, before deducting placement agent fees and offering expenses of $1,783. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the <span style="-sec-ix-hidden:c94230277">five</span>&#160;and <em style="font: inherit;">one</em>-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale. In addition, the Company issued to the placement agent Warrants to purchase up to 350,000 shares of common stock.&#160; The Placement Agent Warrants are exercisable at an exercise price of $6.45 per share of common stock and expire on the <span style="-sec-ix-hidden:c94230285">five</span>&#160;and <em style="font: inherit;">one</em>-half year anniversary of the effective date of the registration statement registering the Shares and Warrant Shares for resale.&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"/>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Liquidity</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We&#160;have experienced&#160;net losses in recent years.&#160;We continue to monitor our liquidity needs and have taken measures to reduce expenses and restructure operations, which we feel are necessary to ensure we maintain sufficient working capital and liquidity to operate the business and invest in our future. As a result, we have evaluated our ongoing business needs, and considered the cash requirements of our APC&#160;and FUEL CHEM businesses. This evaluation included consideration of the following: a) customer and revenue trends in our APC and FUEL CHEM business segments, b) current operating structure and expenditure levels, c) current availability of working capital, and d) support for our research and development initiatives.&#160;We believe our current cash position and net cash flows expected to be generated from operations are adequate to fund planned operations of the Company for the next <em style="font: inherit;">12</em> months.&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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</tbody></table> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Transfers between levels of the fair value hierarchy are recognized based on the actual date of the event or change in circumstances that caused the transfer. We had <em style="font: inherit;">no</em> assets or liabilities that were valued using level <em style="font: inherit;">2</em> or level <em style="font: inherit;">3</em> inputs and therefore there were <em style="font: inherit;">no</em> transfers between levels of the fair value hierarchy during the periods ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
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     <p style="margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">Investments</b></p>
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     <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#160;</p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"/>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b/></p>


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     <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"/>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"/>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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     <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"/>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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</tbody></table>
     <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
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</tbody></table> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"/>


   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"/>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"/>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Goodwill</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Goodwill is evaluated for impairment at the reporting unit level, which is defined as an operating segment or <em style="font: inherit;">one</em> level below an operating segment. Goodwill of our reporting units is assigned upon acquisition after considering the nature of the net assets giving rise to the goodwill and how each reporting unit would enjoy the benefits and synergies of the net assets acquired. We have <span style="-sec-ix-hidden:c94230351">two</span> reporting units for goodwill evaluation purposes: the FUEL CHEM technology segment and the APC technology reporting unit. 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</tbody></table>
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     <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"/>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b/></p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"/>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050302102656">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 2 - Revenue Recognition<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DisclosureTextBlockAbstract', window );"><strong>Notes to Financial Statements</strong></a></td>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerTextBlock', window );">Revenue from Contract with Customer [Text Block]</a></td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">2.</em>&#160;&#160;&#160;&#160;&#160;REVENUE RECOGNITION</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Disaggregated Revenue by Product Technology</i></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents our revenues disaggregated by product technology:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Disaggregated Revenue by Geography</i></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents our revenues disaggregated by geography, based on the location of the end-user:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

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</tbody></table>

   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><i>Timing of Revenue Recognition</i></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents the timing of our revenue recognition:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

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</tbody></table>

   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Contract Balances</i></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>Remaining Performance Obligations</i></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><i>Practical Expedients and Exemptions</i></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>&#160;</i></p>


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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>&#160;</i></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>

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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050300938512">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 3 - Income Taxes<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DisclosureTextBlockAbstract', window );"><strong>Notes to Financial Statements</strong></a></td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">3.</em>&#160;&#160;&#160;&#160;&#160;<span style="background-color:#ffffff;">INCOME TAXES</span></b></p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Within the calculation of the Company&#8217;s annual effective tax rate, the Company has used assumptions and estimates that <em style="font: inherit;"> may </em>change as a result of future guidance, interpretation, and rule-making from the Internal Revenue Service, the SEC, and the FASB and/or various other taxing jurisdictions.&#160; For example, the Company anticipates that the state jurisdictions will continue to determine and announce their conformity to the U.S. Tax Act which could have an impact on the annual effective tax rate.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> March 27, 2020 </em>the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) was enacted which enacted the following relief among others;</p>
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   <table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"><tbody><tr><td style="width:39pt;">&#160;</td><td style="width:10pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">&#9679;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;">Eliminated the <em style="font: inherit;">80%</em> of taxable income limitations by allowing corporate entities to fully utilize Net Operating Losses (NOL) carryforwards to offset taxable income in <em style="font: inherit;">2018,</em> <em style="font: inherit;">2019</em> or <em style="font: inherit;">2020.</em> The <em style="font: inherit;">80%</em> limitation is reinstated for tax years after <em style="font: inherit;">2020.</em></p> </td></tr>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>

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<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Income (loss) before income taxes</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(1,388</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">68</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#160;</td></tr>
</tbody></table>

   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>


   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Significant components of income tax benefit (expense) for the years ended <em style="font: inherit;"> December&#160;</em><em style="font: inherit;">31</em> are as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>

    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Current:</p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Federal</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">State</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(6</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(9</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Foreign</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(10</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Deferred:</p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Federal</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(19</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">State</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(19</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;">(5</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td></tr>
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</tbody></table>

   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">A reconciliation between the provision for income taxes calculated at the U.S. federal statutory income tax rate and the consolidated income tax expense in the consolidated statements of operations for the years ended <em style="font: inherit;"> December&#160;</em><em style="font: inherit;">31</em> is as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">State taxes, net of federal benefit</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">3.1</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(15.5</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)%</td></tr>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

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</tbody></table>

   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>


   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The change in the valuation allowance for deferred tax assets for the years ended <em style="font: inherit;"> December&#160;</em><em style="font: inherit;">31</em> is as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">For the years ended </span><em style="font: inherit;"> December 31, 2022</em><span style="background-color:#ffffff;">&#160;and </span><em style="font: inherit;">2021</em><span style="background-color:#ffffff;">, there were no exercises of stock options.</span></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">As required by ASC <em style="font: inherit;">740,</em> we recognize the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than <em style="font: inherit;">not</em> sustain the position following an audit. For tax positions meeting the more-likely-than-<em style="font: inherit;">not</em> threshold, the amount recognized in the financial statements is the largest benefit that has a greater than <em style="font: inherit;">50%</em> likelihood of being realized upon ultimate settlement with the relevant tax authority.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We recognize interest and penalties related to unrecognized tax benefits in income tax expense for all periods presented. There were no interest and penalties recognized in income tax expense during the years ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>. There were no unrecognized tax benefits as of <em style="font: inherit;"> December 31, 2022</em>&#160;and <em style="font: inherit;">2021</em>.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">We are subject to taxation in the U.S., various states, and in non-U.S. jurisdictions. Our U.S. income tax returns are primarily subject to examination from <em style="font: inherit;">2020</em>&#160;through <em style="font: inherit;">2022;</em> however, U.S. tax authorities also have the ability to review prior tax years to the extent loss carryforwards and tax credit carryforwards are utilized. The open years for the non-U.S. tax returns range from&#160;<em style="font: inherit;">2015</em>&#160;through&#160;<em style="font: inherit;">2022</em>&#160;based on local statutes.</p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Management periodically estimates our probable tax obligations using historical experience in tax jurisdictions and informed judgments. There are inherent uncertainties related to the interpretation of tax regulations in the jurisdictions in which we transact business. The judgments and estimates made at a point in time <em style="font: inherit;"> may </em>change based on the outcome of tax audits, as well as changes to or further interpretations of regulations. If such changes take place, there is a risk that the tax rate <em style="font: inherit;"> may </em>increase or decrease in any period. Tax accruals for tax liabilities related to potential changes in judgments and estimates for both federal and state tax issues are included in current liabilities on the consolidated balance sheet.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The investment in foreign subsidiaries other than Fuel Tech S.p.A (Chile) and Beijing Fuel Tech is considered to be indefinite in duration and therefore we have <em style="font: inherit;">not</em> provided a provision for deferred U.S.&#160;income taxes on the unremitted earnings from those subsidiaries. A provision has <em style="font: inherit;">not</em> been established because it is <em style="font: inherit;">not</em> practicable to determine the amount of unrecognized deferred tax liability for such unremitted foreign earnings and because it is our present intention to reinvest the undistributed earnings indefinitely.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">



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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">As of <em style="font: inherit;"> December 31, 2019, </em>the investment in Fuel Tech S.p.A (Chile) was <em style="font: inherit;">no</em> longer considered to be indefinite and a provision for deferred U.S. income taxes was recorded. As of <em style="font: inherit;"> December 31, 2021, </em>the provision for deferred U.S. income taxes related to the&#160;Fuel Tech S.p.A (Chile) investment was $136. As of <em style="font: inherit;"> December 31, 2022, </em>Fuel Tech S.p.A (Chile) was still included in continuing operations.&#160;As a result an additional ($15) was recorded, adjusting the total consideration to $151. The deferred income taxes associated with this investment are offset by a valuation allowance of ($151).</p>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295630528">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 4 - Common Stock<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DisclosureTextBlockAbstract', window );"><strong>Notes to Financial Statements</strong></a></td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">4.</em>&#160;&#160;&#160;&#160;&#160;COMMON STOCK</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">At <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, respectively, we had 31,272,303&#160;and 31,227,300&#160;shares of common stock issued and 30,296,297&#160;and 30,263,791&#160;outstanding, with an additional 6,715&#160;shares reserved for issuance upon conversion of the <em style="font: inherit;">nil</em> coupon non-redeemable convertible unsecured loan notes (see Note <em style="font: inherit;">6</em>). As of <em style="font: inherit;"> December 31, 2022</em>, we had 5,600,676&#160;shares reserved for issuance upon the exercise or vesting of equity awards, of which 384,500&#160;are stock options that are currently exercisable (see Note <em style="font: inherit;">8</em>).</p>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050297080896">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 5 - Treasury Stock<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 30<br> -URI https://asc.fasb.org/subtopic&amp;trid=2208821<br></p></div>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050382419632">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 6 - Nil Coupon Non-redeemable Convertible Unsecured Loan Notes<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">11.</em>&#160;&#160;&#160;&#160;&#160;DEBT FINANCING</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">On <em style="font: inherit;"> June 30, 2022, </em>the Company entered into an Investment Collateral Security agreement&#160;to use for the sole purpose of issuing standby letters of credit that replaces the former Cash Collateral agreement with BMO Harris. The Investment Collateral Security agreement requires us to pledge our investments as collateral for 150% of the aggregate face amount of outstanding standby letters of credit. The Company pays 250 basis points on the face values of outstanding letters of credit. There are <em style="font: inherit;">no</em> financial covenants set forth in the Investment Collateral Security agreement. At <em style="font: inherit;"> December 31, 2022</em>, the Company had outstanding standby letters of credit totaling approximately $689&#160;under the Investment Collateral Security agreement. At <em style="font: inherit;"> December 31, 2022</em>, the investments held as collateral totaled $1,034. Fuel Tech is committed to reimbursing the issuing bank for any payments made by the bank under these instruments.</p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> April 17, 2020, </em>the Company received $1,556 in loan proceeds from the Paycheck Protection Program (PPP), established pursuant to the Coronavirus Aid, Relief, and Economic Security Act&#160;and administered by the U.S. Small Business Administration (SBA). The unsecured loan is evidenced by a promissory note of the Company dated <em style="font: inherit;"> April 15, 2020&#160;</em>in the principal amount of $1,556, issued to BMO Harris Bank N.A., the lender.&#160;</p>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> January 8, 2021, </em>the Company received full forgiveness from the SBA for the entire balance of loan proceeds used to&#160;fund its qualified payroll&#160;expenses. The Company accounted for the PPP Loan as debt in accordance with ASC&#160;<em style="font: inherit;">470,</em> Debt and accrued&#160;interest in accordance with the interest method under ASC <em style="font: inherit;">835</em>-<em style="font: inherit;">30.</em>&#160; When the loan was forgiven,&#160;the Company reduced the non-current liability by the amount forgiven&#160;and recorded other income&#160;in the Consolidated Statements of Operations. The SBA has the right to audit the loan forgiveness for <em style="font: inherit;">6</em> years after the date the loan was forgiven.&#160;&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"><b>&#160;&#160;&#160;</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">6.</em></b>&#160;&#160;&#160;&#160;&#160;<b><em style="font: inherit;">NIL</em> COUPON NON-REDEEMABLE CONVERTIBLE UNSECURED LOAN NOTES</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">At <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, we had a principal amount of $76 of <span style="-sec-ix-hidden:c94230932">nil</span> coupon non-redeemable convertible unsecured perpetual loan notes (Loan Notes) outstanding. The Loan Notes are convertible at any time into common stock at rates of $6.50 and $11.43 per share, depending on the note. As of <em style="font: inherit;"> December 31, 2022</em>, the <em style="font: inherit;">nil</em> coupon loan notes were convertible into 6,715 shares of common stock. Based on our closing stock price of $1.27&#160;at <em style="font: inherit;"> December 31, 2022</em>, the aggregate fair value of the common stock that the holders would receive if all the loan notes were converted would be approximately $9, which is less than the principal amount of the loans outstanding as of that date. The Loan Notes bear no interest and have <em style="font: inherit;">no</em> maturity date. They are repayable in the event of our dissolution and the holders do <em style="font: inherit;">not</em> have the option to cash-settle the notes. Accordingly, they have been classified within stockholders&#8217; equity in the accompanying balance sheets. The notes do <em style="font: inherit;">not</em> hold distribution or voting rights unless and until converted into common stock.</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">For the years ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, there were no Loan Notes repurchased by the Company.</p>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050297081712">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 7 - Warrants<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DisclosureTextBlockAbstract', window );"><strong>Notes to Financial Statements</strong></a></td>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"><b><em style="font: inherit;">7.</em> WARRANTS</b></p>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> February 11, 2021, </em>Fuel Tech entered into a securities purchase agreement&#160;to issue and sell, in a private placement, 5,000,000 shares of common stock&#160;and 2,500,000 warrants exercisable for a total of 2,500,000 shares of common stock with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were&#160;$25,812, before deducting placement agent fees and offering expenses of $1,783. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the <span style="-sec-ix-hidden:c94230954">five</span>&#160;and <em style="font: inherit;">one</em>-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale.&#160; In addition, the Company issued to the placement agent Warrants to purchase up to 350,000 shares of common stock.&#160; The Placement Agent Warrants are exercisable at an exercise price of $6.45&#160;per share of common stock and expire on the <span style="-sec-ix-hidden:c94230958">five</span>&#160;and <em style="font: inherit;">one</em>-half year anniversary of the effective date of the registration statement registering the Shares and the Warrant Shares for resale.</p>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">Fuel Tech uses the Black-Scholes option pricing model to estimate the grant date fair value of the warrants. The principal variable assumptions utilized in valuing warrants and the methodology for estimating such model inputs are: (<em style="font: inherit;">1</em>)&#160;risk-free interest rate of 0.59%, an estimate based on the yield of zero&#8211;coupon treasury securities with a maturity equal to the expected life of the warrant; (<em style="font: inherit;">2</em>)&#160;expected volatility of 94.66% &#8211; an estimate based on the historical volatility of Fuel Tech&#8217;s common stock for a period equal to the expected life of the warrant; and (<em style="font: inherit;">3</em>)&#160;expected life of the warrant of <span style="-sec-ix-hidden:c94230965">five</span> and <em style="font: inherit;">one</em>-half years based on the term of the warrant.&#160;</p>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">The calculated fair value allocated to the warrants is $7,337.&#160; This amount has been recorded as Additional paid in capital - warrants and is shown net in the Additional paid in capital line of the consolidated balance sheets.&#160;&#160;</p>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">The issuance of warrants to purchase shares of the Company's common stock are summarized as follows:</p>
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       <td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;">2,850,000</td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Outstanding as of December 31, 2022</p> </td>
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       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">2,850,000</td>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">The following table summarizes information about warrants outstanding and exercisable at <em style="font: inherit;"> December 31, 2022</em>:</p>
   <p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;">&#160;</p>

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       <td style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#160;</em></td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Outstanding/</em></p> </td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">6.45</td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px;">&#160;</td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050297027216">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 8 - Stock-based Compensation<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DisclosureTextBlockAbstract', window );"><strong>Notes to Financial Statements</strong></a></td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b><em style="font: inherit;">8.</em>&#160;&#160;&#160;&#160;&#160;STOCK-BASED COMPENSATION</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Under our stock-based employee compensation plan, referred to as the Fuel Tech, Inc. <em style="font: inherit;">2014</em> Long-Term Incentive Plan (Incentive Plan), awards <em style="font: inherit;"> may </em>be granted to participants in the form of Non-Qualified Stock Options, Incentive Stock Options, Stock Appreciation Rights, Restricted Stock, RSUs, Performance Awards, Bonuses or other forms of share-based or non-share-based awards or combinations thereof. Participants in the Incentive Plan <em style="font: inherit;"> may </em>be our directors, officers, employees, consultants or advisors (except consultants or advisors in capital-raising transactions) as the directors determine are key to the success of our business. There are a maximum of 5,600,676&#160;shares that <em style="font: inherit;"> may </em>be issued or reserved for awards to participants under the Incentive Plan. At <em style="font: inherit;"> December 31, 2022</em>, we had 1,899,250&#160;equity awards available for issuance under the Incentive Plan.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We did <span style="-sec-ix-hidden:c94231001"><span style="-sec-ix-hidden:c94232765">not</span></span> record any excess tax benefits within income tax expense for the years ended <em style="font: inherit;"> December 31, 2022</em>&#160;and&#160;<em style="font: inherit;">2021</em>. Given the Company has a full valuation allowance on its deferred tax assets, there were <em style="font: inherit;">no</em> excess tax benefits to record. In addition, we account for forfeitures of awards based on an estimate of the number of awards expected to be forfeited and adjusting the estimate when it is <em style="font: inherit;">no</em> longer probable that the employee will fulfill the service condition.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>


   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Stock-based compensation is included in selling, general and administrative costs in our consolidated statements of operations. The components of stock-based compensation from continuing operations for the years ended <em style="font: inherit;"> December 31, 2022</em> and&#160;<em style="font: inherit;">2021</em>&#160;were as follows:</p>
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Stock Options</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The stock options granted to employees under the Incentive Plan have a 10-year life and they vest as follows: 50% after the <em style="font: inherit;">second</em> anniversary of the award date, 25% after the <em style="font: inherit;">third</em> anniversary, and the final 25% after the <em style="font: inherit;">fourth</em> anniversary of the award date. Fuel Tech calculates stock compensation expense for employee option awards based on the grant date fair value of the award, less expected annual forfeitures, and recognizes expense on a straight-line basis over the <em style="font: inherit;">four</em>-year service period of the award. Stock options granted to members of our Board of Directors vest immediately. Stock compensation for these awards is based on the grant date fair value of the award and is recognized in expense immediately.&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech uses the Black-Scholes option pricing model to estimate the grant date fair value of employee stock options. The principal variable assumptions utilized in valuing options and the methodology for estimating such model inputs include: (<em style="font: inherit;">1</em>)&#160;risk-free interest rate &#8211; an estimate based on the yield of zero&#8211;coupon treasury securities with a maturity equal to the expected life of the option; (<em style="font: inherit;">2</em>)&#160;expected volatility &#8211; an estimate based on the historical volatility of Fuel Tech&#8217;s common stock for a period equal to the expected life of the option; and (<em style="font: inherit;">3</em>)&#160;expected life of the option &#8211; an estimate based on historical experience including the effect of employee terminations.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">There were no stock options granted during the years ended <em style="font: inherit;"> December 31, 2022</em>&#160;and&#160;<em style="font: inherit;">2021</em>.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents a summary of our stock option activity and related information for the years ended <em style="font: inherit;"> December&#160;</em><em style="font: inherit;">31:</em></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The aggregate intrinsic value in the preceding table represents the total pretax intrinsic value, based on our closing stock price of $1.27&#160;as of <em style="font: inherit;"> December 31, 2022</em>, which would have been received by the option holders had those options holders exercised their stock options as of that date.&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table summarizes information about stock options outstanding at <em style="font: inherit;"> December 31, 2022</em>:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Restricted Stock Units</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>


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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>

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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Unvested restricted stock units at December 31, 2022</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">767,048</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">1.32</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Deferred Directors Fees</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">In addition to the Incentive Plan, Fuel Tech has a Deferred Compensation Plan for Directors (Deferred Plan). Under the terms of the Deferred Plan, Directors can elect to defer Directors&#8217; fees for shares of Fuel Tech common stock that are issuable at a future date as defined in the agreement. In accordance with ASC <em style="font: inherit;">718,</em> Fuel Tech accounts for these awards as equity awards as opposed to liability awards. In <em style="font: inherit;">2022</em>&#160;and&#160;<em style="font: inherit;">2021</em>, there was no stock-based compensation expense under the Deferred Plan.</p>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296966528">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 9 - Commitments and Contingencies<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DisclosureTextBlockAbstract', window );"><strong>Notes to Financial Statements</strong></a></td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">9.</em>&#160;&#160;&#160;&#160;&#160;COMMITMENTS AND CONTINGENCIES</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>&#160;</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech is subject to various claims and contingencies related to, among other things, workers compensation, general liability (including product liability), and lawsuits. The Company records liabilities where a contingent loss is probable and can be reasonably estimated. If the reasonable estimate of a probable loss is a range, the Company records the most probable estimate of the loss or the minimum amount when <em style="font: inherit;">no</em> amount within the range is a better estimate than any other amount. The Company discloses a contingent liability even if the liability is <em style="font: inherit;">not</em> probable or the amount is <em style="font: inherit;">not</em> estimable, or both, if there is a reasonable possibility that a material loss <em style="font: inherit;"> may </em>have been incurred.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">From time to time we are involved in litigation with respect to matters arising from the ordinary conduct of our business.&#160;In the opinion of management, based upon presently available information, either adequate provision for anticipated costs have been accrued or the ultimate anticipated costs will <em style="font: inherit;">not</em> materially affect our consolidated financial position, results of operations, or cash flows.&#160;We do <em style="font: inherit;">not</em> believe we have any pending loss contingencies that are probable or reasonably possible of having a material impact on our consolidated financial position, results of operations or cash flows.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">During the <em style="font: inherit;">third</em> quarter of <em style="font: inherit;">2020,</em> the Company was notified of an equipment component failure at a foreign customer location.&#160;The failure&#160;was remedied under the warranty provision of&#160;the contracts&#160;that was in place with the customer and supplier and was completed in the <em style="font: inherit;">third</em> quarter of <em style="font: inherit;">2021.</em>&#160;As of <em style="font: inherit;"> December 31, 2022 </em>and <em style="font: inherit;">2021</em> no charges were recorded in the other accrued liabilities line of the Consolidated Balance Sheets. </span></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>


   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Performance Guarantees</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The majority of Fuel Tech&#8217;s long-term equipment construction contracts contain language guaranteeing that the performance of the system that is being sold to the customer will meet specific criteria. On occasion, performance surety bonds and bank performance guarantees/letters of credit are issued to the customer in support of the construction contracts as follows:</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"><tbody><tr><td style="width:18pt;">&#160;</td><td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">&#8226;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">in support of the warranty period defined in the contract; or</p> </td></tr>
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   <table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"><tbody><tr><td style="width:18pt;">&#160;</td><td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">&#8226;</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;">in support of the system performance criteria that are defined in the contract.</p> </td></tr>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">As of <em style="font: inherit;"> December 31, 2022</em>, we had outstanding bank performance guarantees and letters of credit in the amount of $689&#160;in support of equipment construction contracts that have <em style="font: inherit;">not</em> completed their final acceptance test or that are still operating under a warranty period. The performance guarantees and letters of credit expire in dates ranging from <em style="font: inherit;"> June 2023 </em>through <em style="font: inherit;"> December 2024. </em>The expiration dates <em style="font: inherit;"> may </em>be extended if the project completion dates are extended. Our management believes it is probable that these projects will be successfully completed and that there will <em style="font: inherit;">not</em> be a material adverse impact on our operations from these bank performance guarantees and letters of credit. As a result, no liability has been recorded for these performance guarantees.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Product Warranties</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Fuel Tech&#160;issues a standard product warranty with the sale of our products to customers. Our recognition of warranty liability is based primarily on analyses of warranty claims experience in the preceding years as the nature of our historical product sales for which we offer a warranty are substantially unchanged. This approach provides an aggregate warranty accrual that is historically aligned with actual warranty claims experienced. There was no change&#160;in the warranty liability included in the Other accrued liabilities line of the Consolidated Balance Sheet in <em style="font: inherit;">2022</em>&#160;and&#160;<em style="font: inherit;">2021</em>. The warranty liability balance was $159 at <em style="font: inherit;"> December 31, 2022</em>&#160;and&#160;<em style="font: inherit;">2021</em>.</p>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for commitments and contingencies.</p></div>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050300884144">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 10 - Leases<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DisclosureTextBlockAbstract', window );"><strong>Notes to Financial Statements</strong></a></td>
<td class="text">&#160;<span></span>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">10.</em>&#160;&#160;&#160;&#160;&#160;LEASES</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">The terms of the Company&#8217;s <em style="font: inherit;">three</em>&#160;primary office space lease arrangements are as follows:</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
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      <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Gallarate, Italy building lease, for approximately 1,335&#160;square feet, runs through <em style="font: inherit;"> April&#160;</em><em style="font: inherit;">30,</em> <em style="font: inherit;">2025.</em> This facility serves as the operating headquarters for our European operations.</p> </td>
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      <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Aurora, IL warehouse lease, for approximately 11,000 square feet, runs through <em style="font: inherit;"> December 31, 2023. </em>This facility serves as an outside warehouse facility.&#160;</p> </td>
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      <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Overland Park, KS lease, for approximately 600 square feet, runs through <em style="font: inherit;"> October 15, 2024. </em>This facility serves primarily as a sales office.</p> </td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The Company also has <span style="-sec-ix-hidden:c94231185">three</span> additional operating leases related to certain office equipment and company leased vehicles and <em style="font: inherit;">one</em> short-term lease. Our leases have remaining lease terms of 1.0&#160;years to 2.4&#160;years. Our leases do <em style="font: inherit;">not</em> contain any material residual value guarantees or material restricted covenants and we currently have <em style="font: inherit;">no</em> material sublease arrangements. We have <em style="font: inherit;">no</em> financing leases as defined under ASC <em style="font: inherit;">842.</em></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Total operating lease expense for the years ended <em style="font: inherit;"> December 31, 2022</em>&#160;is as follows:</p>
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       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0); text-align: center;"><em style="font: inherit;">2022</em></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0); text-align: center;"><em style="font: inherit;">2021</em></td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Operating lease cost</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">176</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">198</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">29</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">21</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Total lease cost</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">205</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">219</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The weighted average remaining lease term was 1.77&#160;years as of <em style="font: inherit;"> December 31, 2022</em>. The weighted average discount rate was 4.48%&#160;as of <em style="font: inherit;"> December 31, 2022</em>.&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">Remaining maturities of our existing lease liabilities as of <em style="font: inherit;"> December 31, 2022</em> were as follows:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>

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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 85%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Year Ending December 31,</p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Operating Leases</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2023</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">149</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2024</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">61</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2025</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">13</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Thereafter</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total lease payments</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">223</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Less imputed interest</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(32</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">191</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
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       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">122</td>
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       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">235</td>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>

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       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
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       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">157</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">178</td>
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       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Leased assets obtained in exchange for operating lease liabilities</p> </td>
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       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">139</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">158</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for operating leases of lessee. Includes, but is not limited to, description of operating lease and maturity analysis of operating lease liability.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -URI https://asc.fasb.org/subtopic&amp;trid=77888251<br></p></div>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050297098784">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 11 - Debt Financing<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">11.</em>&#160;&#160;&#160;&#160;&#160;DEBT FINANCING</b></p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">On <em style="font: inherit;"> June 30, 2022, </em>the Company entered into an Investment Collateral Security agreement&#160;to use for the sole purpose of issuing standby letters of credit that replaces the former Cash Collateral agreement with BMO Harris. The Investment Collateral Security agreement requires us to pledge our investments as collateral for 150% of the aggregate face amount of outstanding standby letters of credit. The Company pays 250 basis points on the face values of outstanding letters of credit. There are <em style="font: inherit;">no</em> financial covenants set forth in the Investment Collateral Security agreement. At <em style="font: inherit;"> December 31, 2022</em>, the Company had outstanding standby letters of credit totaling approximately $689&#160;under the Investment Collateral Security agreement. At <em style="font: inherit;"> December 31, 2022</em>, the investments held as collateral totaled $1,034. Fuel Tech is committed to reimbursing the issuing bank for any payments made by the bank under these instruments.</p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> April 17, 2020, </em>the Company received $1,556 in loan proceeds from the Paycheck Protection Program (PPP), established pursuant to the Coronavirus Aid, Relief, and Economic Security Act&#160;and administered by the U.S. Small Business Administration (SBA). The unsecured loan is evidenced by a promissory note of the Company dated <em style="font: inherit;"> April 15, 2020&#160;</em>in the principal amount of $1,556, issued to BMO Harris Bank N.A., the lender.&#160;</p>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> January 8, 2021, </em>the Company received full forgiveness from the SBA for the entire balance of loan proceeds used to&#160;fund its qualified payroll&#160;expenses. The Company accounted for the PPP Loan as debt in accordance with ASC&#160;<em style="font: inherit;">470,</em> Debt and accrued&#160;interest in accordance with the interest method under ASC <em style="font: inherit;">835</em>-<em style="font: inherit;">30.</em>&#160; When the loan was forgiven,&#160;the Company reduced the non-current liability by the amount forgiven&#160;and recorded other income&#160;in the Consolidated Statements of Operations. The SBA has the right to audit the loan forgiveness for <em style="font: inherit;">6</em> years after the date the loan was forgiven.&#160;&#160;</p>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.</p></div>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050297091472">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 12 - Business Segment and Geographic Financial Data<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DisclosureTextBlockAbstract', window );"><strong>Notes to Financial Statements</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SegmentReportingDisclosureTextBlock', window );">Segment Reporting Disclosure [Text Block]</a></td>
<td class="text">
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">12.</em>&#160;&#160;&#160;&#160;&#160;BUSINESS SEGMENT AND&#160;GEOGRAPHIC FINANCIAL DATA</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Business Segment Financial Data</b></p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">We segregate our financial results into two reportable segments representing <em style="font: inherit;">two</em> broad technology segments as follows:</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;">
    <tbody>
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      <td style="width:38pt;">&#160;</td>
      <td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#8226;</p> </td>
      <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The Air Pollution Control technology segment includes technologies to reduce NOx emissions in flue gas generated by the firing of natural gas or coal from boilers, incinerators, furnaces and other stationary combustion sources. These include Over Fire Air systems, NOxOUT<sup style="vertical-align:top;line-height:120%;font-size:pt">&#174;</sup> and HERT&#8482; Selective Non-Catalytic Reduction&#160;systems, and Selective Catalytic Reduction (SCR) systems. Our SCR systems can also include Ammonia Injection Grid, and GSG&#8482; Graduated Straightening Grid systems to provide high NOx reductions at significantly lower capital and operating costs than conventional SCR systems. ULTRA<sup style="vertical-align:top;line-height:120%;font-size:pt">&#174;</sup> technology creates ammonia at a plant site using safe urea for use with any SCR application. ESP technologies make use of electrostatic precipitator products and services to reduce particulate matter. FGC systems are chemical injection systems offered in markets outside the U.S. and Canada to enhance electrostatic precipitator and fabric filter performance in controlling particulate emissions.</p> </td>
     </tr>

    </tbody>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;">
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     <tr>
      <td style="width:38pt;">&#160;</td>
      <td style="width:18pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">&#8226;</p> </td>
      <td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">The FUEL CHEM<sup style="vertical-align:top;line-height:120%;font-size:pt">&#174;</sup> technology segment, which uses chemical processes in combination with advanced CFD and CKM boiler modeling, for the control of slagging, fouling, corrosion, opacity and other sulfur trioxide-related issues in coal-fired furnaces and boilers through the addition of chemicals into the furnace using TIFI<sup style="vertical-align:top;line-height:120%;font-size:pt">&#174;</sup> Targeted In-Furnace Injection&#8482; technology.</p> </td>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The &#8220;Other&#8221; classification includes those profit and loss items <em style="font: inherit;">not</em> allocated to either reportable segment. There are <em style="font: inherit;">no</em> inter-segment sales that require elimination.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We evaluate performance and allocate resources based on gross margin by reportable segment. The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies. We do <em style="font: inherit;">not</em> review assets by reportable segment, but rather, in aggregate for the Company as a whole.</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Information about reporting segment net sales and gross margin from continuing operations are provided below:</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;">
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">For the year ended December 31, 2022</span></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Air Pollution Control Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">FUEL CHEM Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Other</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Total</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Revenues from external customers</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">10,597</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">16,344</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">26,941</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Cost of sales</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(6,924</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(8,374</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(15,298</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Gross margin</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">3,673</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">7,970</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">11,643</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Selling, general and administrative</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(12,275</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(12,275</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Research and development</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(895</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(895</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Operating income (loss) from continuing operations</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">3,673</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">7,970</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(13,170</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(1,527</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
      </tr>

     </tbody>
    </table>

   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>



    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">For the year ended December 31, 2021</span></p> </td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Air Pollution Control Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">FUEL CHEM Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Other</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Total</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Revenues from external customers</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">6,896</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">17,365</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">24,261</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Cost of sales</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(3,529</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(8,834</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(12,363</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Gross margin</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">3,367</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">8,531</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">11,898</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Selling, general and administrative</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(12,055</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(12,055</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Research and development</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(1,332</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(1,332</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Operating income (loss) from continuing operations</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">3,367</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">8,531</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(13,387</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(1,489</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">)</td>
      </tr>

     </tbody>
    </table>

   <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left">&#160;</p>
   <p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left"><b>Geographic Segment Financial Data</b></p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Information concerning our operations by geographic area is provided below. Revenues are attributed to countries based on the location of the end-user. Assets are those directly associated with operations of the geographic area.</p>
   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>

    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><span style="text-decoration: underline; ">For the years ended December 31,</span></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Revenues:</p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">United States</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">20,311</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">19,515</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Foreign</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
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       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">50,124</td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050300975392">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 13 - Restructuring Activities<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b><em style="font: inherit;">13.</em>&#160;&#160;&#160;&#160;&#160;RESTRUCTURING ACTIVITIES</b></p>
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   <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> January 18, 2019, </em>the Company announced a planned suspension of its APC&#160;business operation in China (Beijing Fuel Tech). This action was part of Fuel Tech&#8217;s ongoing operational improvement initiatives designed to prioritize resource allocation, reduce costs, and drive profitability for the Company on a global basis. The transition associated with the suspension of the APC business includes staff rationalization, supplier and partner engagement, and the monetization of certain assets. The remaining transition activities include the execution of the remaining activities to satisfy the requirements for the remaining APC projects in China (with a backlog totaling approximately $5) in addition to collection efforts for the remaining accounts receivable.</p>
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   <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The following table presents our revenues and net loss in China for the years ended <em style="font: inherit;"> December 31, 2022</em>&#160;and <em style="font: inherit;">2021</em>:</p>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296894448">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 14 - Accrued Liabilities<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"><b><em style="font: inherit;">14.</em></b>&#160;&#160;&#160;&#160;&#160;<b>ACCRUED LIABILITIES</b></p>
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   <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;">The components of other accrued liabilities are as follows:</p>
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       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298326208">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Significant Accounting Policies (Policies)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AccountingPoliciesAbstract', window );"><strong>Accounting Policies [Abstract]</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_BasisOfAccountingPolicyPolicyTextBlock', window );">Basis of Accounting, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Basis of Presentation</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The consolidated financial statements include the accounts of Fuel Tech and its wholly owned subsidiaries.&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (GAAP). The books and records of subsidiaries located in foreign countries are maintained according to generally accepted accounting principles in those countries. Upon consolidation, the Company evaluates the differences in accounting principles and determines whether adjustments are necessary to convert the foreign financial statements to the accounting principles upon which the consolidated financial statements are based. All intercompany transactions have been eliminated.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">On the Consolidated Statements of Operations of this Annual Report on Form <em style="font: inherit;">10</em>-K, the presentation of interest income has been updated for <em style="font: inherit;">2021</em> to conform to the current year's presentation. The amount for interest income was previously presented with interest expense under the caption Interest expense, net on the Consolidated Statements of Operations.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_COVID19PandemicPolicyTextBlock', window );">COVID-19 Pandemic [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>COVID-<em style="font: inherit;">19</em> Pandemic and Geopolitical Events</b></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The effects of the coronavirus (COVID-<em style="font: inherit;">19</em>) global pandemic have presented&#160;significant risks to the Company that have had direct and indirect impacts on our results of operations&#160;during the <em style="font: inherit;">twelve</em> months ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>.&#160;Although the impact of the pandemic is difficult to isolate and quantify, the Company has experienced, and <em style="font: inherit;"> may </em>continue to experience, supply chain issues, travel restrictions, and reductions in demand for certain of products&#160;due to the delay or abandonment of ongoing or anticipated projects&#160;due to our customers', suppliers' and other <em style="font: inherit;">third</em> parties' financial distress or concern regarding the volatility of global markets.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Geopolitical events and global economic sanctions resulting from the ongoing conflict between Russia and Ukraine <em style="font: inherit;"> may </em>impact new or existing projects and the prices and availability of raw materials, energy and other materials. These events <em style="font: inherit;"> may </em>also impact energy and regulatory policy nationally or regionally for the impacted regions. In addition, we have experienced and are experiencing varying levels of inflation resulting in part from increased shipping and transportation costs, raw material costs, and labor costs.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Management cannot&#160;predict the full impact of the COVID-<em style="font: inherit;">19</em> pandemic and geopolitical events on the Company's sales and marketing channels and supply chains, and, as a result, the ultimate extent of the effects on the Company are highly uncertain and will depend on future developments. Such effects could exist for an extended period of time. The Company continues to monitor the potential impacts on the business.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_PrivatePlacementOfferingPolicyTextBlock', window );">Private Placement Offering [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Private Placement Offering</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">On <em style="font: inherit;"> February 11, 2021, </em>Fuel Tech entered into a securities purchase agreement (the &#8220;Purchase Agreement&#8221;) with certain institutional investors pursuant to which the Company agreed to issue and sell, in a private placement (the &#8220;Private Placement&#8221;), (i) 5,000,000 shares (the &#8220;Shares&#8221;) of common stock, (ii) and 2,500,000 warrants (the &#8220;Warrants&#8221;) exercisable for a total of 2,500,000 shares of common stock (the &#8220;Warrant Shares&#8221;) with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were $25,812, before deducting placement agent fees and offering expenses of $1,783. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the <span style="-sec-ix-hidden:c94230277">five</span>&#160;and <em style="font: inherit;">one</em>-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale. In addition, the Company issued to the placement agent Warrants to purchase up to 350,000 shares of common stock.&#160; The Placement Agent Warrants are exercisable at an exercise price of $6.45 per share of common stock and expire on the <span style="-sec-ix-hidden:c94230285">five</span>&#160;and <em style="font: inherit;">one</em>-half year anniversary of the effective date of the registration statement registering the Shares and Warrant Shares for resale.&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p><span></span>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_LiquidityPolicyPolicyTextBlock', window );">Liquidity, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Liquidity</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We&#160;have experienced&#160;net losses in recent years.&#160;We continue to monitor our liquidity needs and have taken measures to reduce expenses and restructure operations, which we feel are necessary to ensure we maintain sufficient working capital and liquidity to operate the business and invest in our future. As a result, we have evaluated our ongoing business needs, and considered the cash requirements of our APC&#160;and FUEL CHEM businesses. This evaluation included consideration of the following: a) customer and revenue trends in our APC and FUEL CHEM business segments, b) current operating structure and expenditure levels, c) current availability of working capital, and d) support for our research and development initiatives.&#160;We believe our current cash position and net cash flows expected to be generated from operations are adequate to fund planned operations of the Company for the next <em style="font: inherit;">12</em> months.&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_UseOfEstimates', window );">Use of Estimates, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Use of Estimates</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The preparation of the financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The Company uses estimates in accounting for, among other items, revenue recognition, allowance for doubtful accounts, income tax provisions, excess and obsolete inventory reserve, impairment of long-lived assets, and warranty expenses. Actual results could differ from those estimates.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FairValueMeasurementPolicyPolicyTextBlock', window );">Fair Value Measurement, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Fair Value Measurements</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The carrying values of cash and cash equivalents, accounts receivable, and accounts payable are reasonable estimates of their fair value due to their short-term nature.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We apply authoritative accounting guidance for fair value measurements of financial and non-financial assets and liabilities. This guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis and clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the standard establishes a <em style="font: inherit;">three</em>-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
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</tbody></table> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
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</tbody></table> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>
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</tbody></table> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Transfers between levels of the fair value hierarchy are recognized based on the actual date of the event or change in circumstances that caused the transfer. We had <em style="font: inherit;">no</em> assets or liabilities that were valued using level <em style="font: inherit;">2</em> or level <em style="font: inherit;">3</em> inputs and therefore there were <em style="font: inherit;">no</em> transfers between levels of the fair value hierarchy during the periods ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy', window );">Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Cash, cash equivalents and restricted cash</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We consider all highly liquid debt investments with original maturities from the date of purchase of <em style="font: inherit;">three</em> months or less as cash equivalents. Cash equivalents include investments in money market funds. At <em style="font: inherit;"> December 31, 2022</em>, we had cash on hand of approximately $675&#160;at our Beijing, China subsidiary that is subject to certain local regulations that <em style="font: inherit;"> may </em>limit the immediate availability of these funds outside of China. Cash on hand at our Italy subsidiary totaled approximately $300&#160;at <em style="font: inherit;"> December 31, 2022</em>. Cash on hand at our Chilean subsidiary totaled approximately $225&#160;at <em style="font: inherit;"> December 31, 2022</em>.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Restricted cash as of <em style="font: inherit;"> December 31, 2021 </em>represents funds that are restricted to satisfy any amount borrowed against the Company's Cash Collateral Security agreement with BMO Harris Bank N.A (Cash Collateral Security agreement). In <em style="font: inherit;"> June 2022, </em>the Company replaced the former Cash Collateral Security agreement with an Investment Collateral Security agreement with BMO Harris Bank N.A (Investment Collateral Security agreement) where&#160;existing standby letters of credit are collateralized by amounts held in the Company's investment funds (see Note <em style="font: inherit;">11</em>).&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheet that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows:</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p>

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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InvestmentPolicyTextBlock', window );">Investment, Policy [Policy Text Block]</a></td>
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     <p style="margin: 0pt; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">Investments</b></p>
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<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Gross unrecognized losses</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(168</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">After one year through two years</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">4,919</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">4,807</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">After two years through three years</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">1,441</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">1,409</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Total</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">9,341</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">9,173</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ForeignCurrencyRiskManagementPolicyTextBlock', window );">Foreign Currency Risk Management [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Foreign Currency Risk Management</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our earnings and cash flows are subject to fluctuations due to changes in foreign currency exchange rates. We do <em style="font: inherit;">not</em> enter into foreign currency forward contracts or into foreign currency option contracts to manage this risk due to the nature of the transactions involved.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TradeAndOtherAccountsReceivablePolicy', window );">Accounts Receivable [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Accounts Receivable</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Accounts receivable consist of amounts due to us in the normal course of our business, are <em style="font: inherit;">not</em> collateralized, and normally do <em style="font: inherit;">not</em> bear interest. Accounts receivable includes contract assets, billings occurring subsequent to revenue recognition under Accounting Standards Codification (ASC) <em style="font: inherit;">606</em> <i>Revenue from Contracts with Customers</i>. At <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, unbilled receivables were approximately $3,082 and $1,277, respectively. Refer to Note <em style="font: inherit;">2</em> for further detail.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>&#160;</b></p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy', window );">Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Allowance for Doubtful Accounts</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The allowance for doubtful accounts is our management's best estimate of the amount of credit losses in accounts receivable. In order to control and monitor the credit risk associated with our customer base, we review the credit worthiness of customers on a recurring basis. Factors influencing the level of scrutiny include the level of business the customer has with Fuel Tech, the customer&#8217;s payment history, and the customer&#8217;s financial stability. At the end of each reporting period, the allowance for doubtful accounts balance is reviewed relative to management&#8217;s collectability assessment and is adjusted if deemed necessary.&#160; Bad debt write-offs are made when management believes it is probable a receivable will <em style="font: inherit;">not</em> be recovered. The table below sets forth the components of the Allowance for Doubtful Accounts for the years ended <em style="font: inherit;"> December&#160;</em><em style="font: inherit;">31.</em></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

     <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Year</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Balance at January 1</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Provision charged to expense</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Write-offs / Recoveries</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Balance at December 31</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">2021</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">835</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">227</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">(839</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">223</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2022</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">223</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(19</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(94</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">110</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock', window );">Prepaid Expenses and Other Current Assets [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Prepaid expenses and other current assets</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Prepaid expenses and other current assets include&#160;Chinese banker acceptances of $0&#160;and $55&#160;as of <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, respectively. These are short-term commitments of typically <em style="font: inherit;">three</em> to <em style="font: inherit;">six</em> months&#160;for future payments and can be redeemed at a discount or applied to future vendor payments.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InventoryPolicyTextBlock', window );">Inventory, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Inventories</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Inventories consist primarily of equipment constructed for resale&#160;and spare parts and are stated at the lower of cost or net realizable value, using the weighted-average cost method. At <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, inventory included equipment constructed for resale of$207<span style="background-color:#ffffff;">&#160;and </span>$227<span style="background-color:#ffffff;">, respectively, and spare parts, net of reserves of </span>$185<span style="background-color:#ffffff;">&#160;and </span>$121<span style="background-color:#ffffff;">, respectively.</span> Usage is recorded in cost of sales in the period that parts were issued to a project or used to service equipment.&#160;Equipment constructed for resale that is&#160;in process&#160;is recorded in Other assets. In process equipment for inventory recorded as other assets was $634 and $627&#160;as of <em style="font: inherit;"> December 31, 2022 </em>and <em style="font: inherit;">2021</em> respectively.&#160;&#160;&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Inventories are periodically evaluated to identify obsolete or otherwise impaired parts and are written off when management determines usage is <em style="font: inherit;">not</em> probable. The Company estimates the balance of excess and obsolete inventory by analyzing inventory by age using last used and original purchase date and existing sales pipeline for which the inventory could be used.&#160;The table below sets forth the components of the Excess and Obsolete Inventory Reserve for the years ended <em style="font: inherit;"> December 31.</em></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

     <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Year</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Balance at January 1</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Provision charged to expense</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Write-offs / Recoveries</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Balance at December 31</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2021</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">907</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">20</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">927</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2022</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">927</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">927</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock', window );">Foreign Currency Transactions and Translations Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Foreign Currency Translation and Transactions</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Assets and liabilities of consolidated foreign subsidiaries are translated into U.S. dollars at exchange rates in effect at year end. Revenues and expenses are translated at average exchange rates prevailing during the year. Gains or losses on foreign currency transactions and the related tax effects are reflected in net income. The resulting translation adjustments are included in stockholders&#8217; equity as part of accumulated other comprehensive loss.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>&#160;</b></p><span></span>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_AccumulatedOtherComprehensiveIncomeLossPolicyPolicyTextBlock', window );">Accumulated Other Comprehensive Income (Loss), Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Accumulated Other Comprehensive Loss</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p>

     <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;"><em style="font: inherit;">December 31,</em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Foreign currency translation</b></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#160;</b></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#160;</b></td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Balance at beginning of period</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(1,604</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(1,370</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Other comprehensive loss:</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Foreign currency translation adjustments (1)</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(124</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(234</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Balance at end of period</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(1,728</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(1,604</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
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     <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
    <table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"><tbody><tr><td style="width:36pt;vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">(<em style="font: inherit;">1</em>)</p> </td><td style="vertical-align:top;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;">In all periods presented, there were <em style="font: inherit;">no</em> tax impacts related to functional currency translation adjustments.</p> </td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ResearchAndDevelopmentExpensePolicy', window );">Research and Development Expense, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Research and Development</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Research and development costs are expensed as incurred. Research and development projects funded by customer contracts are reported as part of cost of goods sold. Internally funded research and development expenses are reported as operating expenses.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StandardProductWarrantyPolicy', window );">Standard Product Warranty, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Product/System Warranty</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We typically warrant our air pollution control products and systems against defects in design, materials and workmanship for <span style="-sec-ix-hidden:c94230348">one</span> to <span style="-sec-ix-hidden:c94230349">two</span> years. A provision for estimated future costs relating to warranty expense is recorded when the products/systems become commercially operational.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock', window );">Goodwill and Intangible Assets, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Goodwill</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">Goodwill is evaluated for impairment at the reporting unit level, which is defined as an operating segment or <em style="font: inherit;">one</em> level below an operating segment. Goodwill of our reporting units is assigned upon acquisition after considering the nature of the net assets giving rise to the goodwill and how each reporting unit would enjoy the benefits and synergies of the net assets acquired. We have <span style="-sec-ix-hidden:c94230351">two</span> reporting units for goodwill evaluation purposes: the FUEL CHEM technology segment and the APC technology reporting unit. There is <em style="font: inherit;">no</em> goodwill associated with our APC&#160;technology reporting unit. The entire goodwill balance of $2,116&#160;was allocated to the FUEL CHEM technology reporting unit&#160;as of <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Goodwill is tested for impairment at least annually as of the <em style="font: inherit;">first</em> day of our <em style="font: inherit;">fourth</em> quarter, or more frequently if events or changes in circumstances indicate that the carrying value <em style="font: inherit;"> may </em><em style="font: inherit;">not</em> be recoverable. Our evaluation of goodwill impairment involves <em style="font: inherit;">first</em> assessing qualitative factors to determine whether it is more likely than <em style="font: inherit;">not</em> that the fair value of a reporting unit is less than its carrying amount. We <em style="font: inherit;"> may </em>bypass this qualitative assessment, or determine that based on our qualitative assessment considering the totality of events and circumstances including macroeconomic factors, industry and market considerations, current and projected financial performance, a sustained decrease in our share price, or other factors, that additional impairment analysis is necessary. This additional analysis involves comparing the current fair value of our reporting units to their carrying values. We use a discounted cash flow (DCF) model to determine the current fair value of our FUEL CHEM&#160;reporting unit. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, costs to produce and working capital changes. Management considers historical experience and all available information at the time the fair values of its reporting units are estimated. However, actual fair values that could be realized in an actual transaction <em style="font: inherit;"> may </em>differ from those used to evaluate the impairment of goodwill. Fuel Tech performed its annual goodwill impairment analysis as of <em style="font: inherit;"> October 1, </em><em style="font: inherit;">2022</em>&#160;and determined that <em style="font: inherit;">no</em> impairment of goodwill existed. The Company did <span style="-sec-ix-hidden:c94230363"><span style="-sec-ix-hidden:c94230364">not</span></span> recognize a charge for goodwill impairment for the periods ended <em style="font: inherit;"> December 31, 2022</em>&#160;and&#160;<em style="font: inherit;">2021</em>.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Other Intangible Assets</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Management reviews other finite-lived intangible assets, patent assets, trade names,&#160;and lease assets for impairment when events or changes in circumstances indicate the carrying amount of an asset or asset group <em style="font: inherit;"> may </em><em style="font: inherit;">not</em> be recoverable. 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      <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">During the years ended <em style="font: inherit;"> December 31, 2022</em>&#160;and <em style="font: inherit;">2021</em>, Fuel Tech recorded <em style="font: inherit;">no</em> patent or trademark abandonment charges.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Third-party costs related to the development of patents are included within other intangible assets on the consolidated balance sheets. The <em style="font: inherit;">third</em>-party costs capitalized as patent costs during the years ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em> were $37&#160;and $52, respectively. Third-party costs are comprised of legal fees that relate to the review and preparation of patent disclosures and filing fees incurred to present the patents to the required governing body.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our intellectual property portfolio has been a significant building block for the APC and FUEL CHEM technology segments. The patents are essential to the generation of revenue for our businesses and are essential to protect us from competition in the markets in which we serve. These costs are being amortized on the straight-line method over the period beginning with the patent issuance date and ending on the patent expiration date. Patent maintenance fees are charged to operations as incurred.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Amortization expense from continuing operations for intangible assets was $88&#160;and $157&#160;for the years ended <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, respectively. The table below shows the amortization period and other intangible asset cost by intangible asset as of <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, and the accumulated amortization and net intangible asset value in total for all other intangible assets.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

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</tbody></table>
     <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The table below shows the estimated future amortization expense for intangible assets:</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

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<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2023</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">60</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
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<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2027</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">31</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Thereafter</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">192</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">397</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock', window );">Property, Plant and Equipment, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Property and Equipment</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Property and equipment is stated at historical cost and does <em style="font: inherit;">not</em> include capital in process expenditures yet to be capitalized. Provisions for depreciation are computed by the straight-line method, using estimated useful lives that range based on the nature of the asset. Leasehold improvements are depreciated over the shorter of the associated lease term or the estimated useful life of the asset. Depreciation expense&#160;was $352&#160;and $584&#160;for the years ended <em style="font: inherit;"> December 31, 2022</em>&#160;and <em style="font: inherit;">2021</em>, respectively. The table below shows the depreciable life and cost by asset class as of <em style="font: inherit;"> December 31, 2022</em> and <em style="font: inherit;">2021</em>, and the accumulated depreciation and net book value in total for all classes of assets.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Construction in process</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><em style="font: inherit;">&#160;</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">29</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
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     <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Property and equipment is reviewed for impairment when events and circumstances indicate that the carrying amount of the assets (or asset group) <em style="font: inherit;"> may </em><em style="font: inherit;">not</em> be recoverable. If impairment indicators exist, we perform a more detailed analysis and an impairment loss is recognized when estimated future undiscounted cash flows expected to result from the use of the asset (or asset group) and its eventual disposition are less than the carrying amount. This process of analyzing impairment involves examining the operating condition of individual assets (or asset group) and estimating a fair value based upon current condition, relevant market factors and remaining estimated operational life compared to the asset&#8217;s remaining depreciable life. Quoted market prices and other valuation techniques are used to determine expected cash flows.&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueRecognitionPolicyTextBlock', window );">Revenue [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Revenue Recognition</b></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i>&#160;</i></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is <em style="font: inherit;">not</em> separately identifiable from other promises in the contracts and, therefore, <em style="font: inherit;">not</em> distinct. 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Under the cost-to-cost input measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred. 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Amounts are recorded as accounts receivable when the Company&#8217;s right to consideration is unconditional.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><i/></p>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CostOfSalesPolicyTextBlock', window );">Cost of Goods and Service [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Cost of Sales</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Cost of sales includes all internal and external engineering costs, equipment and chemical charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product line-related, as appropriate (e.g., test equipment depreciation and certain insurance expenses). Certain depreciation and amortization expenses related to tangible and intangible assets, respectively, are allocated to cost of sales. We classify shipping and handling costs in cost of sales in the consolidated statements of operations.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Selling, General and Administrative Expenses</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Selling, general and administrative expenses primarily include the following categories except where an allocation to the cost of sales line item is warranted due to the project- or product-line nature of a portion of the expense category: salaries and wages, employee benefits, non-project travel, insurance, legal, rent, accounting and auditing, recruiting, telephony, employee training, Board of Directors&#8217; fees, auto rental, office supplies, dues and subscriptions, utilities, real estate taxes, commissions and bonuses, marketing materials, postage and business taxes. Departments comprising the selling, general and administrative line item primarily include the functions of executive management, finance and accounting, investor relations, regulatory affairs, marketing, business development, information technology, human resources, sales, legal and general administration.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncomeTaxPolicyTextBlock', window );">Income Tax, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Income Taxes</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, the provision for income taxes represents income taxes paid or payable (or received or receivable) for the current year plus the change in deferred taxes during the year. Deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid, and result from differences between the financial and tax bases of our assets and liabilities and are adjusted for changes in tax rates and tax laws when enacted. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than <em style="font: inherit;">not</em> that a tax benefit will <em style="font: inherit;">not</em> be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and our experience with similar operations. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are <em style="font: inherit;">not</em> long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which <em style="font: inherit;">no</em> valuation allowance is recorded <em style="font: inherit;"> may </em><em style="font: inherit;">not</em> be realized upon changes in facts and circumstances.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Tax benefits related to uncertain tax positions taken or expected to be taken on a tax return are recorded when such benefits meet a more likely than <em style="font: inherit;">not</em> threshold. Otherwise, these tax benefits are recorded when a tax position has been effectively settled, which means that the statute of limitation has expired or the appropriate taxing authority has completed their examination even though the statute of limitations remains open. Interest and penalties related to uncertain tax positions are recognized as part of the provision for income taxes and are accrued beginning in the period that such interest and penalties would be applicable under relevant tax law until such time that the related tax benefits are recognized.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>&#160;</b></p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LesseeLeasesPolicyTextBlock', window );">Lessee, Leases [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"><b>Leases</b></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;">The Company applies the provisions of ASC&#160;<em style="font: inherit;">842,</em> Leases. The Company&#160;determines if an arrangement is a lease at inception by evaluating whether the arrangement conveys the right to use an identified asset and whether the Company obtains substantially all of the economic benefits from and has the ability to direct the use of the asset.&#160;Right-of-use&#160;(ROU)&#160;assets&#160;and&#160;lease&#160;liabilities&#160;are&#160;recognized&#160;at&#160;the&#160;lease&#160;commencement&#160;date&#160;based&#160;on&#160;the&#160;present&#160;value&#160;of&#160;the&#160;future&#160;minimum&#160;lease&#160;payments&#160;over the&#160;lease&#160;term.&#160;Operating&#160;ROU&#160;assets&#160;also&#160;include&#160;the&#160;impact&#160;of&#160;any&#160;lease&#160;incentives. Operating leases are included in right-of-use&#160;operating lease assets, operating lease liabilities - current, and operating lease liabilities - non-current on our Consolidated Balance Sheets.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of our leases do <em style="font: inherit;">not</em> provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. Our lease terms <em style="font: inherit;"> may </em>include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We have lease agreements with lease and non-lease components, and&#160;we elected the practical expedient to <em style="font: inherit;">not</em> separate lease and non-lease components for the majority of our leases. For certain equipment leases, such as vehicles, we account for the lease and non-lease components as a single lease component. We also elected the practical expedient for leases with an initial term of <em style="font: inherit;">12</em> months or less.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationOptionAndIncentivePlansPolicy', window );">Share-Based Payment Arrangement [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Stock-Based Compensation</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Our stock-based employee compensation plan, referred to as the Fuel Tech, Inc. <em style="font: inherit;">2014</em> Long-Term Incentive Plan (Incentive Plan), was adopted in <em style="font: inherit;"> May 2014 </em>and allows for awards to be granted to participants in the form of non-qualified stock options, incentive stock options, stock appreciation rights, restricted stock, restricted stock units, performance awards, and bonuses or other forms of share-based or non-share-based awards or combinations thereof. Participants in the Incentive Plan <em style="font: inherit;"> may </em>be our directors, officers, employees, consultants or advisors (except consultants or advisors in capital-raising transactions) as the directors determine are key to the success of our business. There are a maximum of 5,600,676&#160;shares that <em style="font: inherit;"> may </em>be issued or reserved for awards to participants under the Incentive Plan as of <em style="font: inherit;"> December 31, 2022</em>. Based on the existing issued or reserved awards in Incentive Plan, there are 1,899,250&#160;shares available to be used for future awards to participants in the Incentive Plan as of <em style="font: inherit;"> December 31, 2022</em>.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy', window );">Pension and Other Postretirement Plans, Nonpension Benefits, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Defined Contribution Plan</b></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">We have a retirement savings plan available for all our U.S. employees who have met minimum length-of-service requirements. Our contributions are determined based upon amounts contributed by the employees with additional contributions made at the discretion of the Board of Directors. Costs related to this plan were </span>$200<span style="background-color:#ffffff;">&#160;and&#160;</span>$206<span style="background-color:#ffffff;">&#160;in </span><em style="font: inherit;">2022</em><span style="background-color:#ffffff;">&#160;and&#160;</span><em style="font: inherit;">2021</em><span style="background-color:#ffffff;">, respectively.</span></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EarningsPerSharePolicyTextBlock', window );">Earnings Per Share, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Basic and Diluted Earnings per Common Share</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><span style="background-color:#ffffff;">Basic earnings per share excludes the antidilutive effects of stock options, restricted stock units (RSUs), warrants, and the <em style="font: inherit;">nil</em> coupon non-redeemable convertible unsecured loan notes (see Note <em style="font: inherit;">6</em>). Diluted earnings per share includes the dilutive effect of the <em style="font: inherit;">nil</em> coupon non-redeemable convertible unsecured loan notes, RSUs, warrants, and unexercised in-the-money stock options, except in periods of net loss where the effect of these instruments is antidilutive. Out-of-the-money stock options and warrants are excluded from diluted earnings per share because they are unlikely to be exercised and would be anti-dilutive if they were exercised. At </span><em style="font: inherit;"> December 31, 2022</em><span style="background-color:#ffffff;">&#160;and </span><em style="font: inherit;">2021</em><span style="background-color:#ffffff;">, we had weighted-average outstanding equity awards of </span>763,800<span style="background-color:#ffffff;">&#160;and </span>214,500<span style="background-color:#ffffff;">, respectively, and </span>2,850,000<span style="background-color:#ffffff;">&#160;warrants in both periods, which were antidilutive for the purpose of calculation of&#160;the diluted earnings per share. As of </span><em style="font: inherit;"> December 31, 2022</em><span style="background-color:#ffffff;">,&#160;</span>42,600<span style="background-color:#ffffff;">&#160;incremental equity awards were antidilutive because of the net loss in the year then ended. These equity awards could potentially dilute basic EPS in future years.</span></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">The table below sets forth the weighted-average shares used at <em style="font: inherit;"> December&#160;</em><em style="font: inherit;">31</em> in calculating earnings (loss) per share:</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p>

     <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Basic weighted-average shares</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">30,289,000</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">29,585,000</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Conversion of unsecured loan notes</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Diluted weighted-average shares</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">30,289,000</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">29,694,000</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ConcentrationRiskCreditRisk', window );">Concentration Risk, Credit Risk, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Risk Concentrations</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">Financial instruments that potentially subject the Company to a significant concentration of credit risk consist primarily of cash and cash equivalents and accounts receivable. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. However, management believes the Company is <em style="font: inherit;">not</em> exposed to significant credit risk due to the financial position of its primary depository institution where a significant portion of its deposits are held.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">For the year ended <em style="font: inherit;"> December 31, 2022</em>, <span style="background-color:#ffffff;">we had three customers which individually represented greater than <em style="font: inherit;">10%</em> of revenues. Two customers primarily contributed revenues to the FUEL CHEM technology segment and one contributed revenue&#160;to the APC technology segment. In total these <em style="font: inherit;">three</em> customers represented 48% of consolidated revenues. We had <em style="font: inherit;">no</em> customer&#160;that accounted for greater than <em style="font: inherit;">10%</em> of our current assets as of </span><em style="font: inherit;"> December 31, 2022</em><span style="background-color:#ffffff;">.</span></p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">For the year ended <em style="font: inherit;"> December 31, 2021</em>, we had four customers which individually represented greater than <em style="font: inherit;">10%</em> of revenues. Three customers primarily contributed revenues to the FUEL CHEM technology segment and one contributed revenue&#160;to the APC technology segment. In total these <em style="font: inherit;">four</em> customers represented 60% of consolidated revenues. We had <em style="font: inherit;">no</em> customer&#160;that accounted for greater than <em style="font: inherit;">10%</em> of our current assets as of <em style="font: inherit;"> December 31, 2021</em>.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We control credit risk through requiring milestone payments on long-term contracts, performing ongoing credit evaluations of its customers, and in some cases obtaining security for payment through bank guarantees and letters of credit.</p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockholdersEquityPolicyTextBlock', window );">Stockholders' Equity, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Treasury Stock</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">We use the cost method to account for common stock repurchases. During the years ended <em style="font: inherit;"> December 31, 2022</em>&#160;and&#160;<em style="font: inherit;">2021</em>, we withheld 12,497&#160;and&#160;15,162&#160;shares of our common stock, valued at approximately $17&#160;and&#160;$52, respectively, to settle personal tax withholding obligations that arose as a result of restricted stock units that vested. Refer to Note <em style="font: inherit;">5,</em> &#8220;Treasury Stock,&#8221; for further discussion.</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>&#160;</b></p><span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock', window );">New Accounting Pronouncements, Policy [Policy Text Block]</a></td>
<td class="text"><p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"><b>Recently Issued Accounting Pronouncements</b></p> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">&#160;</p> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;">In <em style="font: inherit;"> June 2016, </em>the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) <em style="font: inherit;">2016</em>-<em style="font: inherit;">13,</em>&#160;Financial Instruments - Credit Losses (Topic <em style="font: inherit;">326</em>): Measurement of Credit Losses on Financial Instruments, and in <em style="font: inherit;"> November 2019, </em>the FASB issued ASU <em style="font: inherit;">2019</em>-<em style="font: inherit;">10,</em> Financial Instruments - Credit Losses (Topic <em style="font: inherit;">326</em>), Derivatives and Hedging (Topic <em style="font: inherit;">815</em>), and Leases (Topic <em style="font: inherit;">842</em>).&#160;This guidance amends the current accounting guidance and requires the measurement of all expected losses based on historical experience, current conditions and reasonable and supportable forecasts. For trade receivables, loans, and other financial instruments, we will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. The standard will become effective for interim and annual periods beginning on <em style="font: inherit;"> January 1, 2023 </em>for Fuel Tech. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. The Company is finalizing the impact of adoption, but we do <em style="font: inherit;">not</em> believe the adoption of this standard will have a material impact on our financial statements. Beginning on <em style="font: inherit;"> January 1, 2023, </em>Fuel Tech will use the caption Allowance for Credit Losses and our expected credit loss model to calculate the allowance.</p><span></span>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for accumulated other comprehensive income (loss).</p></div>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_COVID19PandemicPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for COVID-19 pandemic.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_COVID19PandemicPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_ForeignCurrencyRiskManagementPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of the entity's risk management policy for foreign currency exchange rate derivatives.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_ForeignCurrencyRiskManagementPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_LiquidityPolicyPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for liquidity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_LiquidityPolicyPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for prepaid expenses and other current assets.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_PrivatePlacementOfferingPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for private placement offering.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_PrivatePlacementOfferingPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountingPoliciesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountingPoliciesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BasisOfAccountingPolicyPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for basis of accounting, or basis of presentation, used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BasisOfAccountingPolicyPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Entity's cash and cash equivalents accounting policy with respect to restricted balances. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(1)(a))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=126999549&amp;loc=d3e4273-108586<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ConcentrationRiskCreditRisk">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for credit risk.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 275<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (d)<br> -URI https://asc.fasb.org/extlink&amp;oid=99393423&amp;loc=d3e5967-108592<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 825<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=126941378&amp;loc=d3e61044-112788<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ConcentrationRiskCreditRisk</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CostOfSalesPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for cost of product sold and service rendered.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 705<br> -URI https://asc.fasb.org/topic&amp;trid=2122478<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CostOfSalesPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EarningsPerSharePolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=124432515&amp;loc=d3e3550-109257<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=124432515&amp;loc=d3e3630-109257<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EarningsPerSharePolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FairValueMeasurementPolicyPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for fair value measurements of financial and non-financial assets, liabilities and instruments classified in shareholders' equity. Disclosures include, but are not limited to, how an entity that manages a group of financial assets and liabilities on the basis of its net exposure measures the fair value of those assets and liabilities.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FairValueMeasurementPolicyPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for (1) transactions denominated in a currency other than the reporting enterprise's functional currency, (2) translating foreign currency financial statements that are incorporated into the financial statements of the reporting enterprise by consolidation, combination, or the equity method of accounting, and (3) remeasurement of the financial statements of a foreign reporting enterprise in a hyperinflationary economy.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 830<br> -URI https://asc.fasb.org/topic&amp;trid=2175825<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for goodwill and intangible assets. This accounting policy also may address how an entity assesses and measures impairment of goodwill and intangible assets.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=121556970&amp;loc=d3e13816-109267<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16265-109275<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_GoodwillAndIntangibleAssetsPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:textBlockItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 25<br> -URI https://asc.fasb.org/extlink&amp;oid=123427490&amp;loc=d3e32247-109318<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 20<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32847-109319<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 19<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32840-109319<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=124431353&amp;loc=SL116659661-227067<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32639-109319<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -URI https://asc.fasb.org/extlink&amp;oid=123427490&amp;loc=d3e32280-109318<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 17<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32809-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxPolicyTextBlock</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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</div></td></tr>
</table>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of inventory accounting policy for inventory classes, including, but not limited to, basis for determining inventory amounts, methods by which amounts are added and removed from inventory classes, loss recognition on impairment of inventories, and situations in which inventories are stated above cost.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 330<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=116847112&amp;loc=d3e4556-108314<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 330<br> -URI https://asc.fasb.org/topic&amp;trid=2126998<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(6)(b))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 912<br> -SubTopic 330<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6471895&amp;loc=d3e55923-109411<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 330<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=116847112&amp;loc=d3e4492-108314<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 270<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126900757&amp;loc=d3e543-108305<br><br>Reference 7: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (d)<br> -URI https://asc.fasb.org/extlink&amp;oid=126899994&amp;loc=d3e18823-107790<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6361739&amp;loc=d3e7789-107766<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InventoryPolicyTextBlock</td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
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</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InvestmentPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for investment in financial asset.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(3)(b))<br> -URI https://asc.fasb.org/extlink&amp;oid=120400993&amp;loc=SL114874131-224263<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (a)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InvestmentPolicyTextBlock</td>
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<tr>
<td><strong> Period Type:</strong></td>
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</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LesseeLeasesPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for leasing arrangement entered into by lessee.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918666-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LesseeLeasesPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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</div></td></tr>
</table>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy pertaining to new accounting pronouncements that may impact the entity's financial reporting. Includes, but is not limited to, quantification of the expected or actual impact.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
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</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for plans, other than pension plans, that provide postretirement benefits (including both defined benefit and defined contribution plans). This accounting policy may address (1) the types of plans sponsored by the entity, and the benefits provided by each plan (2) groups that participate in (or are covered by) each plan (3) how plan assets, liabilities and expenses are measured, including the use of any actuaries and (4) significant assumptions used by the entity to value plan assets and liabilities and how such assumptions are derived.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 80<br> -URI https://asc.fasb.org/subtopic&amp;trid=2235144<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 60<br> -URI https://asc.fasb.org/subtopic&amp;trid=2235172<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 70<br> -URI https://asc.fasb.org/subtopic&amp;trid=2235116<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
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<tr>
<td><strong> Balance Type:</strong></td>
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<tr>
<td><strong> Period Type:</strong></td>
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</table></div>
</div></td></tr>
</table>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for long-lived, physical asset used in normal conduct of business and not intended for resale. Includes, but is not limited to, work of art, historical treasure, and similar asset classified as collections.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 958<br> -SubTopic 360<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (d)<br> -URI https://asc.fasb.org/extlink&amp;oid=126982197&amp;loc=d3e99779-112916<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 958<br> -SubTopic 360<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=126982197&amp;loc=d3e99893-112916<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentPolicyTextBlock</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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</div></td></tr>
</table>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for determining the allowance for doubtful accounts for trade and other accounts receivable balances, and when impairments, charge-offs or recoveries are recognized.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -URI https://asc.fasb.org/extlink&amp;oid=123577603&amp;loc=d3e5144-111524<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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</tr>
<tr>
<td><strong> Data Type:</strong></td>
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</tr>
<tr>
<td><strong> Balance Type:</strong></td>
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<tr>
<td><strong> Period Type:</strong></td>
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</tr>
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</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ResearchAndDevelopmentExpensePolicy">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for costs it has incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 730<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6420194&amp;loc=d3e21568-108373<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ResearchAndDevelopmentExpensePolicy</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
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<tr>
<td><strong> Balance Type:</strong></td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
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</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueRecognitionPolicyTextBlock">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for revenue. Includes revenue from contract with customer and from other sources.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (e)<br> -URI https://asc.fasb.org/extlink&amp;oid=126899994&amp;loc=d3e18823-107790<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126899994&amp;loc=d3e18823-107790<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueRecognitionPolicyTextBlock</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for standard warranties including the methodology for measuring the liability.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 460<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126907703&amp;loc=d3e12565-110249<br></p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Disclosure of accounting policy for its capital stock transactions, including dividends and accumulated other comprehensive income.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21459-112644<br></p></div>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295638512">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies (Tables)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Restricted cash included in current assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">891</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Restricted cash included in long-term assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">270</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">23,328</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">37,054</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_HeldToMaturitySecuritiesTextBlock', window );">Debt Securities, Held-to-Maturity [Table Text Block]</a></td>
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<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Amortized cost</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">9,341</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Gross unrecognized gains</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Gross unrecognized losses</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(168</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Fair value</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">9,173</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock', window );">Investments Classified by Contractual Maturity Date [Table Text Block]</a></td>
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     <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Amortized Cost</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">Fair Value</em></p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Within one year</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">2,981</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">2,957</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">After one year through two years</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">4,919</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">4,807</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">After two years through three years</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">1,441</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">1,409</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;">Total</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">9,341</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">9,173</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AllowanceForCreditLossesOnFinancingReceivablesTableTextBlock', window );">Financing Receivable, Allowance for Credit Loss [Table Text Block]</a></td>
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     <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Year</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Balance at January 1</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Provision charged to expense</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Write-offs / Recoveries</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Balance at December 31</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">2021</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">835</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">227</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">(839</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">223</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2022</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">223</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(19</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(94</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">110</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ScheduleOfExcessAndObsoleteInventoryReserveTableTextBlock', window );">Schedule of Excess and Obsolete Inventory Reserve [Table Text Block]</a></td>
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     <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Year</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Balance at January 1</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Provision charged to expense</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Write-offs / Recoveries</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Balance at December 31</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2021</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">907</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">20</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">927</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2022</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">927</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">927</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock', window );">Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]</a></td>
<td class="text">
     <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;"><em style="font: inherit;">December 31,</em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Foreign currency translation</b></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#160;</b></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><b>&#160;</b></td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Balance at beginning of period</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(1,604</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(1,370</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Other comprehensive loss:</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Foreign currency translation adjustments (1)</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(124</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(234</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Balance at end of period</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(1,728</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(1,604</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><b>Total accumulated other comprehensive loss</b></p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(1,728</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(1,604</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock', window );">Schedule of Finite-Lived Intangible Assets [Table Text Block]</a></td>
<td class="text">
     <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><em style="font: inherit;">&#160;</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="10" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;"><em style="font: inherit;"><em style="font: inherit;">2022</em></em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="10" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;"><em style="font: inherit;"><em style="font: inherit;">2021</em></em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
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<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Patent assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">1 - 20</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">803</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(406</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">397</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">789</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(341</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">448</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Total</p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"><em style="font: inherit;">&#160;</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">803</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(406</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">397</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">789</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(341</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 7%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">448</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock', window );">Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]</a></td>
<td class="text">
     <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 85%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Year</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Estimated Amortization Expense</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2023</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">60</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2024</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">52</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2025</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">31</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2026</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">31</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2027</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">31</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Thereafter</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">192</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">397</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentTextBlock', window );">Property, Plant and Equipment [Table Text Block]</a></td>
<td class="text">
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of allowance for credit loss on financing receivable.</p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of information about investment in debt security measured at amortized cost (held-to-maturity).</p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments.</p></div>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock', window );">Revenue from External Customers by Geographic Areas [Table Text Block]</a></td>
<td class="text">
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Foreign Revenues</b></p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;"><b>&#160;</b></td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;"><b>&#160;</b></td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Americas</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">213</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">356</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Total Foreign Revenues</b></p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">6,630</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">4,746</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Total Revenues</b></p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">26,941</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">24,261</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock', window );">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]</a></td>
<td class="text">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;"><em style="font: inherit;">Twelve Months Ended December 31,</em></em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Products transferred at a point in time</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">18,849</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">20,072</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Products and services transferred over time</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">8,092</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">4,189</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><b>Total Revenues</b></p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">26,941</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">24,261</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock', window );">Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]</a></td>
<td class="text">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="6" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;"><em style="font: inherit;">As of</em></em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296326272">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 3 - Income Taxes (Tables)<br></strong></div></th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock', window );">Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]</a></td>
<td class="text">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Current:</p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Federal</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">State</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(6</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(9</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Foreign</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(10</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Total current</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(16</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(9</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Deferred:</p> </td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Federal</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(19</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">State</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(19</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;">(5</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Total deferred</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(38</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;">(5</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Income tax expense</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(54</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(14</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock', window );">Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]</a></td>
<td class="text">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Provision at the U.S. federal statutory rate</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">21.0</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">21.0</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">State taxes, net of federal benefit</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">3.1</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(15.5</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)%</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Foreign tax rate differential</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">0.4</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(30.2</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Valuation allowance</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(48.8</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">(1504.6</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">)%</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Chile outside basis differential</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">0.4</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">34.4</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">PPP Loan Forgiveness</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#8212;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">(484.6</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">)%</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">Accrual to return</p> </td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">3.1</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">%</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">(329.3</td><td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0">)%</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock', window );">Schedule of Deferred Tax Assets and Liabilities [Table Text Block]</a></td>
<td class="text">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2022</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2021</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 18pt;">Research and Development Costs</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">528</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Other</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">471</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">376</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Total deferred tax assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">15,550</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">14,916</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td></tr>
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Intangible assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(100</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(105</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">Total deferred tax liabilities</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(100</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(105</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Net deferred tax asset before valuation allowance</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">15,450</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">14,811</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;">Valuation allowances for deferred tax assets</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(15,627</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(14,950</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Net deferred tax liability</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(177</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td><td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(139</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SummaryOfValuationAllowanceTextBlock', window );">Summary of Valuation Allowance [Table Text Block]</a></td>
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    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;"><tbody><tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">Year</span></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">Balance at January 1</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Charged to costs and expenses</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">(Deductions)/Other</em></td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Balance at December 31</em></p> </td><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td></tr>
<tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"> <p style="margin: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif;">2021</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">15,971</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">(1,021</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">)</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">14,950</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0">&#160;</td></tr>
<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2022</p> </td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">14,950</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">677</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">15,627</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296075056">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 8 - Stock-based Compensation (Tables)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock', window );">Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]</a></td>
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<tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; font-variant: normal; margin: 0pt;">Aggregate Intrinsic Value</p> </td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#160;</em></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">27</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt;"><em style="font: inherit;">&#160;</em></td><td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">$</td><td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">38</td><td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td></tr>
</tbody></table>
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<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeTextBlock', window );">Share-Based Payment Arrangement, Option, Exercise Price Range [Table Text Block]</a></td>
<td class="text">
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   <span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock', window );">Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]</a></td>
<td class="text">
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295417280">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 10 - Leases (Tables)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2023</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">149</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2024</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">61</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">2025</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">13</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Thereafter</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total lease payments</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">223</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Less imputed interest</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(32</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Total</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">191</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
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<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_OperatingLeaseLiabilitiesTableTextBlock', window );">Operating Lease Liabilities [Table Text Block]</a></td>
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     <tbody>
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       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Operating lease liabilities - current</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">125</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">113</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Operating lease liabilities - non-current</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">66</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">122</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Total operating lease liabilities</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">191</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">235</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
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<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_LesseeOperatingLeasesSupplementalCashFlowInformationTableTextBlock', window );">Lessee, Operating Leases, Supplemental Cash Flow Information [Table Text Block]</a></td>
<td class="text">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">For the Twelve Months ended December 31, 2022</em></td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"><em style="font: inherit;">For the twelve months ended December 31, 2021</em></td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Cash paid for amounts included in the measurement of lease liabilities</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">157</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">178</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Leased assets obtained in exchange for operating lease liabilities</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">139</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">158</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of supplemental cash flow information related to operating leases of lessee.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure for lessee's operating leases.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of lessee's lease cost. Includes, but is not limited to, interest expense for finance lease, amortization of right-of-use asset for finance lease, operating lease cost, short-term lease cost, variable lease cost and sublease income.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918686-209980<br></p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of undiscounted cash flows of lessee's operating lease liability. Includes, but is not limited to, reconciliation of undiscounted cash flows to operating lease liability recognized in statement of financial position.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918701-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296983536">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 12 - Business Segment and Geographic Financial Data (Tables)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TableTextBlock', window );"><strong>Notes Tables</strong></a></td>
<td class="text">&#160;<span></span>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock', window );">Schedule of Segment Reporting Information, by Segment [Table Text Block]</a></td>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">For the year ended December 31, 2022</span></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Air Pollution Control Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">FUEL CHEM Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Total</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Revenues from external customers</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">10,597</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">16,344</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">26,941</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Cost of sales</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(6,924</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(8,374</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(15,298</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Gross margin</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">3,673</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">7,970</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">11,643</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Selling, general and administrative</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(12,275</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(12,275</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
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      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Research and development</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(895</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(895</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
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      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Operating income (loss) from continuing operations</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">3,673</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">7,970</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(13,170</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(1,527</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
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    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;">
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       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 52%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">For the year ended December 31, 2021</span></p> </td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Air Pollution Control Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">FUEL CHEM Segment</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Other</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">Total</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Revenues from external customers</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">6,896</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">17,365</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">24,261</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Cost of sales</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(3,529</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(8,834</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(12,363</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;">)</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Gross margin</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">3,367</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">8,531</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">11,898</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Selling, general and administrative</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(12,055</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">(12,055</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Research and development</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">&#8212;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(1,332</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">(1,332</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt;">)</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Operating income (loss) from continuing operations</p> </td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">3,367</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">8,531</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(13,387</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;">)</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 9%; text-align: right; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">(1,489</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">)</td>
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     </tbody>
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   <span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock', window );">Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]</a></td>
<td class="text">
    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"><span style="text-decoration: underline; ">For the years ended December 31,</span></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2022</em></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">2021</em></p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;">Revenues:</p> </td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">United States</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">20,311</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">19,515</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;"> <p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;">Foreign</p> </td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">6,630</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">4,746</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">26,941</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
       <td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">24,261</td>
       <td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
      </tr>

     </tbody>
    </table>

    <table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &quot;Times New Roman&quot;, Times, serif; text-indent: 0px;">
     <tbody>
      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; width: 70%;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;"><span style="text-decoration: underline; ">As of December 31,</span></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2022</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"><em style="font: inherit;">2021</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(204, 238, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt;">Assets:</p> </td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="text-align: left; font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;">&#160;</td>
      </tr>

      <tr style="background-color: rgb(255, 255, 255); vertical-align: bottom">
       <td style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt;"> <p style="font-family: &quot;Times New Roman&quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;">United States</p> </td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295630528">
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<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 13 - Restructuring Activities (Tables)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
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<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets.</p></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>42
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<DESCRIPTION>IDEA: XBRL DOCUMENT
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<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296490592">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 14 - Accrued Liabilities (Tables)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
</tr>
<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TableTextBlock', window );"><strong>Notes Tables</strong></a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherCurrentLiabilitiesTableTextBlock', window );">Other Current Liabilities [Table Text Block]</a></td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td colspan="2" style="text-align: center; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"> <p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"><em style="font: inherit;">December 31, 2022</em></p> </td>
       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td style="font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px;">&#160;</td>
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       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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       <td style="width: 12%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; text-align: right;">159</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">159</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt;">&#160;</td>
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       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">295</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);">&#160;</td>
       <td style="width: 12%; text-align: right; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);">312</td>
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       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt;">&#160;</td>
       <td style="width: 1%; font-family: &quot;Times New Roman&quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);">$</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Tabular disclosure of other current liabilities.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherCurrentLiabilitiesTableTextBlock</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>43
<FILENAME>R32.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050289271568">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies (Details Textual)<br> $ / shares in Units, $ in Thousands</strong></div></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="2">12 Months Ended</th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th">
<div>Feb. 11, 2021 </div>
<div>USD ($) </div>
<div>$ / shares </div>
<div>shares</div>
</th>
<th class="th">
<div>Dec. 31, 2022 </div>
<div>USD ($) </div>
<div>$ / shares </div>
<div>shares</div>
</th>
<th class="th">
<div>Dec. 31, 2021 </div>
<div>USD ($) </div>
<div>shares</div>
</th>
<th class="th">
<div>Jun. 30, 2022 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Dec. 31, 2020 </div>
<div>shares</div>
</th>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued', window );">Class of Warrant or Right, Number of Warrants Issued (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement', window );">Proceeds from Issuance of Private Placement</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 25,812<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PaymentsOfStockIssuanceCosts', window );">Payments of Stock Issuance Costs</a></td>
<td class="nump">$ 1,783<span></span>
</td>
<td class="nump">(0)<span></span>
</td>
<td class="nump">1,783<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Cash', window );">Cash</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">12,560<span></span>
</td>
<td class="nump">35,893<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_InvestmentPlanMaximumAmountApproved', window );">Investment Plan, Maximum Amount. Approved</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 10,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_InvestmentPlanMaximumAdditionalAmountApproved', window );">Investment Plan, Maximum Additional Amount, Approved</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">10,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_UnbilledContractsReceivable', window );">Unbilled Contracts Receivable</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3,082<span></span>
</td>
<td class="nump">1,277<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DueFromCustomerAcceptances', window );">Due from Customer Acceptances</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="nump">55<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InventoryNet', window );">Inventory, Net, Total</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 392<span></span>
</td>
<td class="nump">348<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NumberOfReportingUnits', window );">Number of Reporting Units</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Goodwill', window );">Goodwill, Ending Balance</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 2,116<span></span>
</td>
<td class="nump">2,116<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_GoodwillImpairmentLoss', window );">Goodwill, Impairment Loss</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AmortizationOfIntangibleAssets', window );">Amortization of Intangible Assets</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">88<span></span>
</td>
<td class="nump">157<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Depreciation', window );">Depreciation, Total</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 352<span></span>
</td>
<td class="nump">584<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_NumberOfUnitsWithApcTechnology', window );">Number of Units with APC Technology</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,200<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DefinedContributionPlanCostRecognized', window );">Defined Contribution Plan, Cost</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 200<span></span>
</td>
<td class="nump">$ 206<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber', window );">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">384,500<span></span>
</td>
<td class="nump">434,500<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">484,500<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Class of Warrant or Right, Outstanding (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2,850,000<span></span>
</td>
<td class="nump">2,850,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount', window );">Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">42,600<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TreasuryStockSharesAcquired', window );">Treasury Stock, Shares, Acquired (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">12,497<span></span>
</td>
<td class="nump">15,162<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TreasuryStockValueAcquiredCostMethod', window );">Treasury Stock, Value, Acquired, Cost Method</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 17<span></span>
</td>
<td class="nump">$ 52<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember', window );">Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Three Customers [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_NumberOfMajorCustomers', window );">Number of Major Customers</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">3<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ConcentrationRiskPercentage1', window );">Concentration Risk, Percentage</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">48.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember', window );">Revenue Benchmark [Member] | Customer Concentration Risk [Member] | Four Customers [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_NumberOfMajorCustomers', window );">Number of Major Customers</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">4<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ConcentrationRiskPercentage1', window );">Concentration Risk, Percentage</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">60.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AwardTypeAxis=ftek_AntidilutiveMember', window );">Antidilutive [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber', window );">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">763,800<span></span>
</td>
<td class="nump">214,500<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Class of Warrant or Right, Outstanding (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2,850,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember', window );">The 2014 Long-term Incentive Plan [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized', window );">Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">5,600,676<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant', window );">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1,899,250<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NatureOfExpenseAxis=ftek_CapitalizedThirdpartyCostsMember', window );">Capitalized Third-party Costs [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedPatentsGross', window );">Finite-Lived Patents, Gross</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 37<span></span>
</td>
<td class="nump">$ 52<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_FuelChemTechnologySegmentMember', window );">FUEL CHEM Technology Segment [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Goodwill', window );">Goodwill, Ending Balance</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 2,116<span></span>
</td>
<td class="nump">$ 2,116<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_APCTechnologyMember', window );">APC Technology [Member] | Revenue Benchmark [Member] | Customer Concentration Risk [Member] | One Customer [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_NumberOfMajorCustomers', window );">Number of Major Customers</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">1<span></span>
</td>
<td class="nump">1<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PublicUtilitiesInventoryAxis=ftek_EquipmentContstructedForResaleMember', window );">Equipment Contstructed for Resale [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InventoryNet', window );">Inventory, Net, Total</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 207<span></span>
</td>
<td class="nump">$ 227<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PublicUtilitiesInventoryAxis=ftek_SparePartsMember', window );">Spare Parts [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InventoryNet', window );">Inventory, Net, Total</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">185<span></span>
</td>
<td class="nump">121<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PublicUtilitiesInventoryAxis=ftek_InProcessEquipmentMember', window );">In Process Equipment [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InventoryNet', window );">Inventory, Net, Total</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 634<span></span>
</td>
<td class="nump">627<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_RangeAxis=srt_MinimumMember', window );">Minimum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DebtSecuritiesHeldtomaturityMaturityTerm', window );">Debt Securities, Held-to-maturity, Maturity Term (Month)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">3 months<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_StandardProductWarrantyPeriod', window );">Standard Product Warranty Period (Year)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">1 year<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_RangeAxis=srt_MinimumMember', window );">Minimum [Member] | APC Technology [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1', window );">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">6 months<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_RangeAxis=srt_MaximumMember', window );">Maximum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DebtSecuritiesHeldtomaturityMaturityTerm', window );">Debt Securities, Held-to-maturity, Maturity Term (Month)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">36 months<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_StandardProductWarrantyPeriod', window );">Standard Product Warranty Period (Year)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">2 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_RangeAxis=srt_MaximumMember', window );">Maximum [Member] | APC Technology [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1', window );">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">18 months<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PledgedStatusAxis=us-gaap_AssetPledgedAsCollateralMember', window );">Asset Pledged as Collateral [Member] | Letter of Credit [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RestrictedCashAndInvestments', window );">Restricted Cash and Investments, Total</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,034<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember', window );">Warrants Issued in Connection with Private Placement [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued', window );">Class of Warrant or Right, Number of Warrants Issued (in shares) | shares</a></td>
<td class="nump">2,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights', window );">Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares</a></td>
<td class="nump">2,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 5.10<span></span>
</td>
<td class="nump">$ 5.10<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WarrantsAndRightsOutstandingTerm', window );">Warrants and Rights Outstanding, Term (Year)</a></td>
<td class="text">5 years 6 months<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Class of Warrant or Right, Outstanding (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">2,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_ThePlacementAgentWarrantsMember', window );">The Placement Agent Warrants [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights', window );">Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares</a></td>
<td class="nump">350,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 6.45<span></span>
</td>
<td class="nump">$ 6.45<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WarrantsAndRightsOutstandingTerm', window );">Warrants and Rights Outstanding, Term (Year)</a></td>
<td class="text">5 years 6 months<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Class of Warrant or Right, Outstanding (in shares) | shares</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">350,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember', window );">Private Placement [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues', window );">Stock Issued During Period, Shares, New Issues (in shares) | shares</a></td>
<td class="nump">5,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharesIssuedPricePerShare', window );">Shares Issued, Price Per Share (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 5.1625<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement', window );">Proceeds from Issuance of Private Placement</a></td>
<td class="nump">$ 25,812<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PaymentsOfStockIssuanceCosts', window );">Payments of Stock Issuance Costs</a></td>
<td class="nump">$ 1,783<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember', window );">Private Placement [Member] | Warrants Issued in Connection with Private Placement [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued', window );">Class of Warrant or Right, Number of Warrants Issued (in shares) | shares</a></td>
<td class="nump">2,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights', window );">Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares</a></td>
<td class="nump">2,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 5.10<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=us-gaap_NonUsMember', window );">Non-US [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Revenues', window );">Revenues, Total</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 6,630<span></span>
</td>
<td class="nump">$ 4,746<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_PercentageOfRevenue', window );">Percentage of Revenue</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">25.00%<span></span>
</td>
<td class="nump">20.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=country_CN', window );">CHINA</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Cash', window );">Cash</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 675<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=country_IT', window );">ITALY</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Cash', window );">Cash</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">300<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=country_CL', window );">CHILE</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Cash', window );">Cash</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 225<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Represents number of warrants issued.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DebtSecuritiesHeldtomaturityMaturityTerm">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Maturity term of debt security, held-to-maturity securities.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DebtSecuritiesHeldtomaturityMaturityTerm</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_InvestmentPlanMaximumAdditionalAmountApproved">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The additional amount approved under investment plan.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_InvestmentPlanMaximumAdditionalAmountApproved</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_InvestmentPlanMaximumAmountApproved">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Maximum amount approved for investment plan.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_InvestmentPlanMaximumAmountApproved</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_NumberOfMajorCustomers">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Represents the number of major customers accounting for 10% or more of the specified concentration risk benchmark, which includes, but not limited to, sales revenue, accounts receivable, etc.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_NumberOfMajorCustomers</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:integerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_NumberOfUnitsWithApcTechnology">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of units with APC Technology</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_NumberOfUnitsWithApcTechnology</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:integerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_PercentageOfRevenue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Represents percentage of revenue.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_PercentageOfRevenue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_StandardProductWarrantyPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Represents standard product warranty period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_StandardProductWarrantyPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AmortizationOfIntangibleAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=6388964&amp;loc=d3e16225-109274<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AmortizationOfIntangibleAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=124432515&amp;loc=d3e3550-109257<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Cash">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 946<br> -SubTopic 210<br> -Section 45<br> -Paragraph 20<br> -URI https://asc.fasb.org/extlink&amp;oid=118262064&amp;loc=SL116631418-115840<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 946<br> -SubTopic 210<br> -Section 45<br> -Paragraph 21<br> -URI https://asc.fasb.org/extlink&amp;oid=118262064&amp;loc=SL116631419-115840<br><br>Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Cash</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Exercise price per share or per unit of warrants or rights outstanding.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21475-112644<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21475-112644<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of warrants or rights outstanding.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ConcentrationRiskPercentage1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 42<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9054-108599<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 275<br> -SubTopic 10<br> -Section 50<br> -Paragraph 18<br> -URI https://asc.fasb.org/extlink&amp;oid=99393423&amp;loc=d3e6351-108592<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 20<br> -URI https://asc.fasb.org/extlink&amp;oid=123594938&amp;loc=d3e13531-108611<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 21<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=123594938&amp;loc=d3e13537-108611<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 275<br> -SubTopic 10<br> -Section 50<br> -Paragraph 20<br> -URI https://asc.fasb.org/extlink&amp;oid=99393423&amp;loc=d3e6404-108592<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ConcentrationRiskPercentage1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DefinedContributionPlanCostRecognized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cost for defined contribution plan.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 715<br> -SubTopic 70<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=49170846&amp;loc=d3e28014-114942<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DefinedContributionPlanCostRecognized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Depreciation">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Depreciation</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DueFromCustomerAcceptances">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amounts receivable from customers on short-term negotiable time drafts drawn on and accepted by the institution (also known as banker's acceptance transactions) that are outstanding on the reporting date.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03.9)<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DueFromCustomerAcceptances</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedPatentsGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Gross carrying amount before accumulated amortization as of the balance sheet date of the costs pertaining to the exclusive legal rights granted to the owner of the patent to exploit an invention or a process for a period of time specified by law. Such costs may have been expended to directly apply and receive patent rights, or to acquire such rights.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedPatentsGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Goodwill">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121556970&amp;loc=d3e13816-109267<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(10)(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (h)<br> -URI https://asc.fasb.org/extlink&amp;oid=121556970&amp;loc=d3e13816-109267<br><br>Reference 4: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 55<br> -Paragraph 24<br> -URI https://asc.fasb.org/extlink&amp;oid=122137925&amp;loc=d3e14258-109268<br><br>Reference 5: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=99380562&amp;loc=d3e13770-109266<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(15))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Goodwill</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GoodwillImpairmentLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=121556970&amp;loc=d3e13854-109267<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=99380562&amp;loc=d3e13777-109266<br><br>Reference 4: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 55<br> -Paragraph 24<br> -URI https://asc.fasb.org/extlink&amp;oid=122137925&amp;loc=d3e14258-109268<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (e)<br> -URI https://asc.fasb.org/extlink&amp;oid=121556970&amp;loc=d3e13816-109267<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_GoodwillImpairmentLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InventoryNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(6))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=124098289&amp;loc=d3e6676-107765<br><br>Reference 3: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InventoryNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NumberOfReportingUnits">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NumberOfReportingUnits</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:integerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsOfStockIssuanceCosts">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The cash outflow for cost incurred directly with the issuance of an equity security.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3291-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsOfStockIssuanceCosts</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceOfPrivatePlacement</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RestrictedCashAndInvestments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Cash and investments whose use in whole or in part is restricted for the long-term, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 954<br> -SubTopic 210<br> -Section 45<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=120413173&amp;loc=SL6242262-115580<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 954<br> -SubTopic 210<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=127002003&amp;loc=SL6242269-115581<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RestrictedCashAndInvestments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 13<br> -Subparagraph (b)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130556-203045<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Revenues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI 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-Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 40<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9031-108599<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(i))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 12: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(i))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 13: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 14: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(5))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 15: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 41<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9038-108599<br><br>Reference 16: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 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https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 23: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Revenues</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of shares authorized for issuance under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(3)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of options outstanding, including both vested and non-vested options.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(ii)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(i)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharesIssuedPricePerShare">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Per share or per unit amount of equity securities issued.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharesIssuedPricePerShare</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of new stock issued during the period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodSharesNewIssues</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TreasuryStockSharesAcquired">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of shares that have been repurchased during the period and are being held in treasury.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TreasuryStockSharesAcquired</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TreasuryStockValueAcquiredCostMethod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 30<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6405813&amp;loc=d3e23239-112655<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TreasuryStockValueAcquiredCostMethod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UnbilledContractsReceivable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 912<br> -SubTopic 310<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126938201&amp;loc=d3e55302-109406<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UnbilledContractsReceivable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WarrantsAndRightsOutstandingTerm">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (bbb)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=126976982&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WarrantsAndRightsOutstandingTerm</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueNetMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_MajorCustomersAxis=ftek_ThreeCustomersMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_MajorCustomersAxis=ftek_ThreeCustomersMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_MajorCustomersAxis=ftek_FourCustomersMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_MajorCustomersAxis=ftek_FourCustomersMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AwardTypeAxis=ftek_AntidilutiveMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AwardTypeAxis=ftek_AntidilutiveMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NatureOfExpenseAxis=ftek_CapitalizedThirdpartyCostsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NatureOfExpenseAxis=ftek_CapitalizedThirdpartyCostsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=ftek_FuelChemTechnologySegmentMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=ftek_FuelChemTechnologySegmentMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=ftek_APCTechnologyMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=ftek_APCTechnologyMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_MajorCustomersAxis=ftek_OneCustomerMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_MajorCustomersAxis=ftek_OneCustomerMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesInventoryAxis=ftek_EquipmentContstructedForResaleMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesInventoryAxis=ftek_EquipmentContstructedForResaleMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesInventoryAxis=ftek_SparePartsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesInventoryAxis=ftek_SparePartsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PublicUtilitiesInventoryAxis=ftek_InProcessEquipmentMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PublicUtilitiesInventoryAxis=ftek_InProcessEquipmentMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RangeAxis=srt_MinimumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MinimumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RangeAxis=srt_MaximumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MaximumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PledgedStatusAxis=us-gaap_AssetPledgedAsCollateralMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PledgedStatusAxis=us-gaap_AssetPledgedAsCollateralMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
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<tr>
<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PledgingPurposeAxis=us-gaap_LetterOfCreditMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_ThePlacementAgentWarrantsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=ftek_ThePlacementAgentWarrantsMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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</table></div>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=us-gaap_NonUsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=us-gaap_NonUsMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<td><strong> Period Type:</strong></td>
<td></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=country_CN">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=country_CN</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=country_IT">
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=country_IT</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=country_CL</td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<td><strong> Balance Type:</strong></td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296215136">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies - Reconciliation of Cash, Cash Equivalents, and Restricted Cash (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Cash', window );">Cash</a></td>
<td class="nump">$ 12,560<span></span>
</td>
<td class="nump">$ 35,893<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CashEquivalentsAtCarryingValue', window );">Cash equivalents</a></td>
<td class="nump">10,768<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue', window );">Restricted cash included in current assets</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">891<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent', window );">Restricted cash included in long-term assets</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">270<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents', window );">Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows</a></td>
<td class="nump">$ 23,328<span></span>
</td>
<td class="nump">$ 37,054<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Cash">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 946<br> -SubTopic 210<br> -Section 45<br> -Paragraph 20<br> -URI https://asc.fasb.org/extlink&amp;oid=118262064&amp;loc=SL116631418-115840<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 946<br> -SubTopic 210<br> -Section 45<br> -Paragraph 21<br> -URI https://asc.fasb.org/extlink&amp;oid=118262064&amp;loc=SL116631419-115840<br><br>Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Cash</td>
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<td><strong> Period Type:</strong></td>
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</table></div>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash and cash equivalents, and cash and cash equivalents restricted to withdrawal or usage. Excludes amount for disposal group and discontinued operations. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 24<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3521-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3044-108585<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=126999549&amp;loc=SL98516268-108586<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CashEquivalentsAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as current. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3044-108585<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=126999549&amp;loc=SL98516268-108586<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RestrictedCashAndCashEquivalentsNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash and cash equivalents restricted as to withdrawal or usage, classified as noncurrent. Cash includes, but is not limited to, currency on hand, demand deposits with banks or financial institutions, and other accounts with general characteristics of demand deposits. Cash equivalents include, but are not limited to, short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=126999549&amp;loc=SL98516268-108586<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3044-108585<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 954<br> -SubTopic 210<br> -Section 45<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=120413173&amp;loc=SL116631458-115580<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RestrictedCashAndCashEquivalentsNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>45
<FILENAME>R34.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
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</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298624880">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies - Amortized Cost to Fair Value of HTM Debt Securities (Details)<br> $ in Thousands</strong></div></th>
<th class="th">
<div>Dec. 31, 2022 </div>
<div>USD ($)</div>
</th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss', window );">Amortized cost</a></td>
<td class="nump">$ 9,341<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain', window );">Gross unrecognized gains</a></td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss', window );">Gross unrecognized losses</a></td>
<td class="num">(168)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_HeldToMaturitySecuritiesFairValue', window );">Fair value</a></td>
<td class="nump">$ 9,173<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (d)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=d3e27232-111563<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(6))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=124260329&amp;loc=d3e26610-111562<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=d3e27232-111563<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=d3e27232-111563<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5A<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=SL120269820-111563<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=d3e27232-111563<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5A<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=SL120269820-111563<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_HeldToMaturitySecuritiesFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Fair value of investment in debt security measured at amortized cost (held-to-maturity).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (aa)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=d3e27232-111563<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(6))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5A<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=SL120269820-111563<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_HeldToMaturitySecuritiesFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>46
<FILENAME>R35.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050297911216">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies - Debt Securities by Maturity (Details)<br> $ in Thousands</strong></div></th>
<th class="th">
<div>Dec. 31, 2022 </div>
<div>USD ($)</div>
</th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount', window );">Within one year, amortized cost</a></td>
<td class="nump">$ 2,981<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue', window );">Within one year, fair value</a></td>
<td class="nump">2,957<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo', window );">After one year through two years, amortized cost</a></td>
<td class="nump">4,919<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo', window );">After one year through two years, fair value</a></td>
<td class="nump">4,807<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree', window );">After two years through three years, amortized cost</a></td>
<td class="nump">1,441<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree', window );">After two years through three years, fair value</a></td>
<td class="nump">1,409<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss', window );">Amortized cost</a></td>
<td class="nump">9,341<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_HeldToMaturitySecuritiesFairValue', window );">Fair value</a></td>
<td class="nump">$ 9,173<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (d)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=d3e27232-111563<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(6))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=124260329&amp;loc=d3e26610-111562<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=d3e27232-111563<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Fair value of investment in debt security measured at amortized cost (held-to-maturity), with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (f)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=d3e27232-111563<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5B<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=SL120269825-111563<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 320<br> -Section 50<br> -Paragraph 3A<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126980459&amp;loc=SL120269850-112803<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 320<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126980459&amp;loc=d3e62586-112803<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance for credit loss, of investment in debt security measured at amortized cost (held-to-maturity) with single maturity date and allocated without single maturity date, maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 320<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126980459&amp;loc=d3e62586-112803<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (f)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=d3e27232-111563<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_HeldToMaturitySecuritiesFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Fair value of investment in debt security measured at amortized cost (held-to-maturity).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (aa)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=d3e27232-111563<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(6))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 320<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5A<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126970911&amp;loc=SL120269820-111563<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_HeldToMaturitySecuritiesFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>47
<FILENAME>R36.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298669232">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies - Allowance for Doubtful Accounts (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AllowanceForDoubtfulAccountsReceivable', window );">Balance at January 1</a></td>
<td class="nump">$ 223<span></span>
</td>
<td class="nump">$ 835<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange', window );">Provision charged to expense</a></td>
<td class="num">(19)<span></span>
</td>
<td class="nump">227<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries', window );">Write-offs / Recoveries</a></td>
<td class="num">(94)<span></span>
</td>
<td class="num">(839)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AllowanceForDoubtfulAccountsReceivable', window );">Balance at December 31</a></td>
<td class="nump">$ 110<span></span>
</td>
<td class="nump">$ 223<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of direct write-downs or recoveries of receivables charged against the allowance for doubtful accounts.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount of provision for doubtful accounts including foreign impact of foreign exchange.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AllowanceForDoubtfulAccountsReceivable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of allowance for credit loss on accounts receivable.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 326<br> -SubTopic 20<br> -Section 50<br> -Paragraph 13<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124255953&amp;loc=SL82919249-210447<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=123577603&amp;loc=d3e5074-111524<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 326<br> -SubTopic 20<br> -Section 50<br> -Paragraph 13<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=124255953&amp;loc=SL82919249-210447<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 326<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=124255206&amp;loc=SL82895884-210446<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(4))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AllowanceForDoubtfulAccountsReceivable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>48
<FILENAME>R37.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050301534224">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies - Excess and Obsolete Inventory Reserve (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InventoryValuationReserves', window );">Excess and obsolete inventory reserve, beginning balance</a></td>
<td class="nump">$ 927<span></span>
</td>
<td class="nump">$ 907<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_InventoryValuationReserveProvision', window );">Provision charged to expense</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InventoryWriteDown', window );">Write-offs / Recoveries</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">20<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_InventoryValuationReserves', window );">Excess and obsolete inventory reserve, ending balance</a></td>
<td class="nump">$ 927<span></span>
</td>
<td class="nump">$ 927<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_InventoryValuationReserveProvision">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount of provision charged to inventory valuation reserve.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_InventoryValuationReserveProvision</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InventoryValuationReserves">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of valuation reserve for inventory.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(6))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 330<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SAB TOPIC 5.BB)<br> -URI https://asc.fasb.org/extlink&amp;oid=27011343&amp;loc=d3e100047-122729<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InventoryValuationReserves</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_InventoryWriteDown">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 330<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=116847112&amp;loc=d3e4542-108314<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_InventoryWriteDown</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>49
<FILENAME>R38.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
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</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298522048">
<tr>
<th class="tl" colspan="2" rowspan="2"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies - Accumulated Other Comprehensive Income (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="nump">$ 46,200<span></span>
</td>
<td class="nump">$ 22,321<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="nump">44,841<span></span>
</td>
<td class="nump">46,200<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedTranslationAdjustmentMember', window );">Accumulated Foreign Currency Adjustment Attributable to Parent [Member]</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="num">(1,604)<span></span>
</td>
<td class="num">(1,370)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent', window );">Foreign currency translation adjustments (1)</a></td>
<td class="th" style="border-bottom: 0px;"><sup>[1]</sup></td>
<td class="num">(124)<span></span>
</td>
<td class="num">(234)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockholdersEquity', window );">Balance</a></td>
<td class="th" style="border-bottom: 0px;"><sup></sup></td>
<td class="num">$ (1,728)<span></span>
</td>
<td class="num">$ (1,604)<span></span>
</td>
</tr>
<tr><td colspan="3"></td></tr>
<tr><td colspan="3"><table class="outerFootnotes" width="100%"><tr class="outerFootnote">
<td style="vertical-align: top; width: 12pt;" valign="top">[1]</td>
<td style="vertical-align: top;" valign="top">In all periods presented, there were no tax impacts related to functional currency translation adjustments.</td>
</tr></table></td></tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after tax of other comprehensive income (loss) attributable to parent entity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1B<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126968391&amp;loc=SL7669625-108580<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1A<br> -Subparagraph (c)(3)<br> -URI https://asc.fasb.org/extlink&amp;oid=109239629&amp;loc=SL4573702-111684<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 20<br> -URI https://asc.fasb.org/extlink&amp;oid=126929396&amp;loc=SL4569643-111683<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1A<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126968391&amp;loc=SL7669619-108580<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 810<br> -SubTopic 10<br> -Section 45<br> -Paragraph 19<br> -URI https://asc.fasb.org/extlink&amp;oid=126929396&amp;loc=SL4569616-111683<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockholdersEquity">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SAB Topic 4.E)<br> -URI https://asc.fasb.org/extlink&amp;oid=122038336&amp;loc=d3e74512-122707<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(31))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(30))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=123596393&amp;loc=d3e14064-108612<br><br>Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockholdersEquity</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedTranslationAdjustmentMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementEquityComponentsAxis=us-gaap_AccumulatedTranslationAdjustmentMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>50
<FILENAME>R39.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296240560">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies - Summary of Intangible Asset Activity (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsGross', window );">Gross Carrying Amount</a></td>
<td class="nump">$ 803<span></span>
</td>
<td class="nump">$ 789<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization', window );">Accumulated Amortization</a></td>
<td class="num">(406)<span></span>
</td>
<td class="num">(341)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsNet', window );">Net Carrying Amount</a></td>
<td class="nump">397<span></span>
</td>
<td class="nump">448<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_PatentsMember', window );">Patents [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsGross', window );">Gross Carrying Amount</a></td>
<td class="nump">803<span></span>
</td>
<td class="nump">789<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization', window );">Accumulated Amortization</a></td>
<td class="num">(406)<span></span>
</td>
<td class="num">(341)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsNet', window );">Net Carrying Amount</a></td>
<td class="nump">$ 397<span></span>
</td>
<td class="nump">$ 448<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_PatentsMember', window );">Patents [Member] | Minimum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetUsefulLife', window );">Amortization Period (Year)</a></td>
<td class="text">1 year<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_PatentsMember', window );">Patents [Member] | Maximum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetUsefulLife', window );">Amortization Period (Year)</a></td>
<td class="text">20 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedIntangibleAssetUsefulLife">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetUsefulLife</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(16))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedIntangibleAssetsGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 928<br> -SubTopic 340<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6473545&amp;loc=d3e61844-108004<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsGross</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedIntangibleAssetsNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 926<br> -SubTopic 20<br> -Section 50<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=120154696&amp;loc=d3e54445-107959<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsNet</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis=us-gaap_PatentsMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MinimumMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<td><strong> Balance Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MaximumMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298520368">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies - Estimated Future Amortization Expense (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths', window );">2023</a></td>
<td class="nump">$ 60<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo', window );">2024</a></td>
<td class="nump">52<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree', window );">2025</a></td>
<td class="nump">31<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour', window );">2026</a></td>
<td class="nump">31<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive', window );">2027</a></td>
<td class="nump">31<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive', window );">Thereafter</a></td>
<td class="nump">192<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_FiniteLivedIntangibleAssetsNet', window );">Total</a></td>
<td class="nump">$ 397<span></span>
</td>
<td class="nump">$ 448<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of amortization for asset, excluding financial asset and goodwill, lacking physical substance with finite life expected to be recognized after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(3)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(3)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td>debit</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(3)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(3)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo">
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(3)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_FiniteLivedIntangibleAssetsNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 926<br> -SubTopic 20<br> -Section 50<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=120154696&amp;loc=d3e54445-107959<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 350<br> -SubTopic 30<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=66006027&amp;loc=d3e16323-109275<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_FiniteLivedIntangibleAssetsNet</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<td>instant</td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050291618512">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies - Property and Equipment (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentGross', window );">Total cost</a></td>
<td class="nump">$ 22,992<span></span>
</td>
<td class="nump">$ 22,852<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment', window );">Less accumulated depreciation</a></td>
<td class="num">(18,557)<span></span>
</td>
<td class="num">(18,243)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentNet', window );">Total net book value</a></td>
<td class="nump">4,435<span></span>
</td>
<td class="nump">4,609<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LandMember', window );">Land [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentGross', window );">Total cost</a></td>
<td class="nump">1,050<span></span>
</td>
<td class="nump">1,050<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember', window );">Building [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentGross', window );">Total cost</a></td>
<td class="nump">$ 3,950<span></span>
</td>
<td class="nump">3,950<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentUsefulLife', window );">Depreciable Life (Year)</a></td>
<td class="text">39 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_BuildingAndLeaseholdImprovementsMember', window );">Building and Leasehold Improvements [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentGross', window );">Total cost</a></td>
<td class="nump">$ 2,626<span></span>
</td>
<td class="nump">2,626<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_BuildingAndLeaseholdImprovementsMember', window );">Building and Leasehold Improvements [Member] | Minimum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentUsefulLife', window );">Depreciable Life (Year)</a></td>
<td class="text">3 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_BuildingAndLeaseholdImprovementsMember', window );">Building and Leasehold Improvements [Member] | Maximum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentUsefulLife', window );">Depreciable Life (Year)</a></td>
<td class="text">39 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_FieldEquipmentMember', window );">Field Equipment [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentGross', window );">Total cost</a></td>
<td class="nump">$ 11,882<span></span>
</td>
<td class="nump">11,787<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_FieldEquipmentMember', window );">Field Equipment [Member] | Minimum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentUsefulLife', window );">Depreciable Life (Year)</a></td>
<td class="text">3 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_FieldEquipmentMember', window );">Field Equipment [Member] | Maximum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentUsefulLife', window );">Depreciable Life (Year)</a></td>
<td class="text">4 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_ComputerEquipmentAndSoftwareMember', window );">Computer Equipment and Software [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentGross', window );">Total cost</a></td>
<td class="nump">$ 2,117<span></span>
</td>
<td class="nump">2,099<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_ComputerEquipmentAndSoftwareMember', window );">Computer Equipment and Software [Member] | Minimum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentUsefulLife', window );">Depreciable Life (Year)</a></td>
<td class="text">2 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_ComputerEquipmentAndSoftwareMember', window );">Computer Equipment and Software [Member] | Maximum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentUsefulLife', window );">Depreciable Life (Year)</a></td>
<td class="text">3 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember', window );">Furniture and Fixtures [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentGross', window );">Total cost</a></td>
<td class="nump">$ 1,306<span></span>
</td>
<td class="nump">1,308<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember', window );">Furniture and Fixtures [Member] | Minimum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentUsefulLife', window );">Depreciable Life (Year)</a></td>
<td class="text">3 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember', window );">Furniture and Fixtures [Member] | Maximum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentUsefulLife', window );">Depreciable Life (Year)</a></td>
<td class="text">10 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember', window );">Vehicles [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentGross', window );">Total cost</a></td>
<td class="nump">$ 32<span></span>
</td>
<td class="nump">32<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentUsefulLife', window );">Depreciable Life (Year)</a></td>
<td class="text">5 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ConstructionInProgressMember', window );">Construction in Progress [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PropertyPlantAndEquipmentGross', window );">Total cost</a></td>
<td class="nump">$ 29<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(14))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(13))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 360<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6391035&amp;loc=d3e2868-110229<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(a)(8))<br> -URI https://asc.fasb.org/extlink&amp;oid=126734703&amp;loc=d3e572229-122910<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 360<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=124429447&amp;loc=SL124453093-239630<br><br>Reference 4: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentUsefulLife">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentUsefulLife</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LandMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_LandMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_BuildingMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_BuildingAndLeaseholdImprovementsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_BuildingAndLeaseholdImprovementsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RangeAxis=srt_MinimumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MinimumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RangeAxis=srt_MaximumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MaximumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_FieldEquipmentMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_FieldEquipmentMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_ComputerEquipmentAndSoftwareMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=ftek_ComputerEquipmentAndSoftwareMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_FurnitureAndFixturesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_VehiclesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ConstructionInProgressMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ConstructionInProgressMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
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<head>
<title></title>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295897392">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 1 - Organization and Significant Accounting Policies - Summary of Earnings (Loss) Per Share (Details) - shares<br></strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic', window );">Basic weighted-average shares (in shares)</a></td>
<td class="nump">30,289,000<span></span>
</td>
<td class="nump">29,585,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities', window );">Conversion of unsecured loan notes (in shares)</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements', window );">Unexercised options and unvested restricted stock units (in shares)</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">109,000<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding', window );">Diluted weighted-average shares (in shares)</a></td>
<td class="nump">30,289,000<span></span>
</td>
<td class="nump">29,694,000<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of convertible debt securities using the if-converted method.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 40<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1930-109256<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 42<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e2029-109256<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124432515&amp;loc=d3e3550-109257<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncrementalCommonSharesAttributableToConversionOfDebtSecurities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=126962052&amp;loc=d3e4991-113900<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 22<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1707-109256<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124432515&amp;loc=d3e3550-109257<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28A<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1500-109256<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 23<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1757-109256<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124432515&amp;loc=d3e3550-109257<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 16<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1505-109256<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124432515&amp;loc=d3e3550-109257<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 260<br> -SubTopic 10<br> -Section 45<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=126958026&amp;loc=d3e1448-109256<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WeightedAverageNumberOfSharesOutstandingBasic</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295440688">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 2 - Revenue Recognition 1 (Details Textual)<br> Pure in Thousands, $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th">
<div>Dec. 31, 2022 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Dec. 31, 2021 </div>
<div>USD ($)</div>
</th>
<th class="th">
<div>Dec. 31, 2020 </div>
<div>USD ($)</div>
</th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ContractWithCustomerLiabilityCurrent', window );">Contract with Customer, Liability, Current</a></td>
<td class="nump">$ 372<span></span>
</td>
<td class="nump">$ 390<span></span>
</td>
<td class="nump">$ 850<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ContractWithCustomerLiabilityRevenueRecognized', window );">Contract with Customer, Liability, Revenue Recognized</a></td>
<td class="nump">$ 384<span></span>
</td>
<td class="nump">$ 776<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts', window );">Contract with Customer, Contracts in Progress, Number of Contracts Identified as Loss Contracts</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueRemainingPerformanceObligation', window );">Revenue, Remaining Performance Obligation, Amount</a></td>
<td class="nump">$ 8,245<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_AirPollutionControlMember', window );">Air Pollution Control [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ContractWithCustomerAssetNet', window );">Contract with Customer, Asset, after Allowance for Credit Loss, Total</a></td>
<td class="nump">3,082<span></span>
</td>
<td class="nump">$ 1,277<span></span>
</td>
<td class="nump">2,079<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_FUELCHEMMember', window );">FUEL CHEM [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ContractWithCustomerAssetNet', window );">Contract with Customer, Asset, after Allowance for Credit Loss, Total</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 269<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The number of contracts in progress identified as loss contracts.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:integerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ContractWithCustomerAssetNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130549-203045<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=126919976&amp;loc=SL49130531-203044<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 45<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=126919976&amp;loc=SL49130533-203044<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ContractWithCustomerAssetNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ContractWithCustomerLiabilityCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=126919976&amp;loc=SL49130531-203044<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126919976&amp;loc=SL49130532-203044<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130549-203045<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ContractWithCustomerLiabilityCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ContractWithCustomerLiabilityRevenueRecognized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130549-203045<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ContractWithCustomerLiabilityRevenueRecognized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueRemainingPerformanceObligation">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of transaction price allocated to performance obligation that has not been recognized as revenue.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 13<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130556-203045<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueRemainingPerformanceObligation</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=ftek_AirPollutionControlMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=ftek_AirPollutionControlMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<td><strong> Name:</strong></td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295619488">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 2 - Revenue Recognition 2 (Details Textual)<br> $ in Thousands</strong></div></th>
<th class="th">
<div>Dec. 31, 2022 </div>
<div>USD ($)</div>
</th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueRemainingPerformanceObligation', window );">Revenue, Remaining Performance Obligation, Amount</a></td>
<td class="nump">$ 8,245<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis=2023-01-01', window );">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2023-01-01</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueRemainingPerformanceObligation', window );">Revenue, Remaining Performance Obligation, Amount</a></td>
<td class="nump">$ 7,926<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1', window );">Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period (Month)</a></td>
<td class="text">12 months<span></span>
</td>
</tr>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of transaction price allocated to performance obligation that has not been recognized as revenue.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 13<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130556-203045<br></p></div>
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<tr>
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<td>credit</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Period in which remaining performance obligation is expected to be recognized as revenue, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 13<br> -Subparagraph (b)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130556-203045<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
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<td style="white-space:nowrap;">us-gaap_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td>xbrli:durationItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<html>
<head>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296244512">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 2 - Revenue Recognition - Revenues Disaggregated by Product Technology (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
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<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">$ 26,941<span></span>
</td>
<td class="nump">$ 24,261<span></span>
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</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_AirPollutionControlMember', window );">Air Pollution Control [Member]</a></td>
<td class="text">&#160;<span></span>
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<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">10,597<span></span>
</td>
<td class="nump">6,896<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_AirPollutionControlMember', window );">Air Pollution Control [Member] | Technology Solutions [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">7,935<span></span>
</td>
<td class="nump">4,189<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_AirPollutionControlMember', window );">Air Pollution Control [Member] | Spare Parts [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">911<span></span>
</td>
<td class="nump">1,138<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_AirPollutionControlMember', window );">Air Pollution Control [Member] | Ancillary Revenue [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">1,751<span></span>
</td>
<td class="nump">1,569<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_FUELCHEMMember', window );">FUEL CHEM [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">16,344<span></span>
</td>
<td class="nump">17,365<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_FUELCHEMMember', window );">FUEL CHEM [Member] | Technology Solutions [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">$ 16,344<span></span>
</td>
<td class="nump">$ 17,365<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 40<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9031-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 41<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9038-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130543-203045<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 42<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9054-108599<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130545-203045<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 924<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 11.L)<br> -URI https://asc.fasb.org/extlink&amp;oid=6472922&amp;loc=d3e499488-122856<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax</td>
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<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=ftek_AirPollutionControlMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<td><strong> Balance Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_ProductOrServiceAxis=ftek_TechnologySolutionsMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_ProductOrServiceAxis=ftek_SparePartsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_ProductOrServiceAxis=ftek_SparePartsMember</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_ProductOrServiceAxis=ftek_AncillaryRevenueMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=ftek_FUELCHEMMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=ftek_FUELCHEMMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
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<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298487952">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 2 - Revenue Recognition - Revenues Disaggregated by Geography (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">$ 26,941<span></span>
</td>
<td class="nump">$ 24,261<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=country_US', window );">UNITED STATES</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">20,311<span></span>
</td>
<td class="nump">19,515<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=srt_AmericasMember', window );">Americas [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">213<span></span>
</td>
<td class="nump">356<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=srt_EuropeMember', window );">Europe [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">2,888<span></span>
</td>
<td class="nump">1,894<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=srt_AsiaMember', window );">Asia [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">3,529<span></span>
</td>
<td class="nump">2,496<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=us-gaap_NonUsMember', window );">Non-US [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">$ 6,630<span></span>
</td>
<td class="nump">$ 4,746<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 40<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9031-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 41<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9038-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130543-203045<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 42<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9054-108599<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130545-203045<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 924<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 11.L)<br> -URI https://asc.fasb.org/extlink&amp;oid=6472922&amp;loc=d3e499488-122856<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=country_US">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=country_US</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=srt_AmericasMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=srt_AmericasMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=srt_EuropeMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=srt_EuropeMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
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</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=srt_AsiaMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=srt_AsiaMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
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</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=us-gaap_NonUsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=us-gaap_NonUsMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>58
<FILENAME>R47.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050301349776">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 2 - Revenue Recognition - Timing of Revenue Recognition (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">$ 26,941<span></span>
</td>
<td class="nump">$ 24,261<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredAtPointInTimeMember', window );">Transferred at Point in Time [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">18,849<span></span>
</td>
<td class="nump">20,072<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredOverTimeMember', window );">Transferred over Time [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">$ 8,092<span></span>
</td>
<td class="nump">$ 4,189<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 40<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9031-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 41<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9038-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130543-203045<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 42<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9054-108599<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130545-203045<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 924<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 11.L)<br> -URI https://asc.fasb.org/extlink&amp;oid=6472922&amp;loc=d3e499488-122856<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredAtPointInTimeMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredAtPointInTimeMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredOverTimeMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TimingOfTransferOfGoodOrServiceAxis=us-gaap_TransferredOverTimeMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<head>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296222832">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 2 - Revenue Recognition - Components of Accounts Receivable (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AccountsReceivableGrossCurrent', window );">Trade receivables</a></td>
<td class="nump">$ 4,605<span></span>
</td>
<td class="nump">$ 2,122<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_UnbilledReceivablesCurrent', window );">Unbilled receivables</a></td>
<td class="nump">3,082<span></span>
</td>
<td class="nump">1,277<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AccountsAndOtherReceivablesNetCurrent', window );">Other short-term receivables</a></td>
<td class="nump">152<span></span>
</td>
<td class="nump">83<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AllowanceForDoubtfulAccountsReceivable', window );">Allowance for doubtful accounts</a></td>
<td class="num">(110)<span></span>
</td>
<td class="num">(223)<span></span>
</td>
<td class="num">$ (835)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AccountsReceivableNetCurrent', window );">Total accounts receivable</a></td>
<td class="nump">$ 7,729<span></span>
</td>
<td class="nump">$ 3,259<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsAndOtherReceivablesNetCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance, receivable from customers, clients, or other third-parties, and receivables classified as other due within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsAndOtherReceivablesNetCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsReceivableGrossCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=124259787&amp;loc=d3e4428-111522<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=124098289&amp;loc=d3e6676-107765<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 45<br> -Paragraph 9<br> -URI https://asc.fasb.org/extlink&amp;oid=124259787&amp;loc=d3e4531-111522<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(3)(a)(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsReceivableGrossCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AccountsReceivableNetCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=124259787&amp;loc=d3e4428-111522<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 45<br> -Paragraph 9<br> -URI https://asc.fasb.org/extlink&amp;oid=124259787&amp;loc=d3e4531-111522<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AccountsReceivableNetCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AllowanceForDoubtfulAccountsReceivable">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of allowance for credit loss on accounts receivable.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 326<br> -SubTopic 20<br> -Section 50<br> -Paragraph 13<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124255953&amp;loc=SL82919249-210447<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 310<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=123577603&amp;loc=d3e5074-111524<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 326<br> -SubTopic 20<br> -Section 50<br> -Paragraph 13<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=124255953&amp;loc=SL82919249-210447<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 326<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=124255206&amp;loc=SL82895884-210446<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(4))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AllowanceForDoubtfulAccountsReceivable</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UnbilledReceivablesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UnbilledReceivablesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
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<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050291601632">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 3 - Income Taxes (Details Textual) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
<th class="th"><div>Dec. 31, 2017</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised', window );">Stock Issued During Period, Value, Stock Options Exercised</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued', window );">Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_UnrecognizedTaxBenefits', window );">Unrecognized Tax Benefits, Ending Balance</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredFederalIncomeTaxExpenseBenefit', window );">Deferred Federal Income Tax Expense (Benefit)</a></td>
<td class="nump">19<span></span>
</td>
<td class="nump">(0)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_FuelTechSpAMember', window );">Fuel Tech S.p.A [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredFederalIncomeTaxExpenseBenefit', window );">Deferred Federal Income Tax Expense (Benefit)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 136<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes', window );">Increase (Decrease) in Deferred Income Taxes</a></td>
<td class="num">(15)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment', window );">Deferred Federal Income Tax Expense (Benefit), Net of Adjustment</a></td>
<td class="nump">151<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DeferredIncomeTaxExpenseValuationAllowance', window );">Deferred Income Tax Expense, Valuation Allowance</a></td>
<td class="nump">151<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember', window );">Domestic Tax Authority [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLossCarryforwards', window );">Operating Loss Carryforwards</a></td>
<td class="nump">28,227<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 10,733<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignCountryMember', window );">Foreign Tax Authority [Member] | Ministry of Economic Affairs and Finance, Italy [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLossCarryforwards', window );">Operating Loss Carryforwards</a></td>
<td class="nump">6,760<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignCountryMember', window );">Foreign Tax Authority [Member] | State Administration of Taxation, China [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLossCarryforwards', window );">Operating Loss Carryforwards</a></td>
<td class="nump">$ 13,684<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred federal income tax expense (benefit) pertaining to income (loss) from continuing operations, net of adjustments.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DeferredFederalIncomeTaxExpenseBenefitNetOfAdjustment</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DeferredIncomeTaxExpenseValuationAllowance">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount of valuation allowance allocated to deferred income tax expense.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DeferredIncomeTaxExpenseValuationAllowance</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredFederalIncomeTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, deferred national tax expense (benefit) for non-US (United States of America) jurisdiction.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.7)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(1)(Note 1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32639-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredFederalIncomeTaxExpenseBenefit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncreaseDecreaseInDeferredIncomeTaxes">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The increase (decrease) during the reporting period in the account that represents the temporary difference that results from Income or Loss that is recognized for accounting purposes but not for tax purposes and vice versa.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncreaseDecreaseInDeferredIncomeTaxes</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLossCarryforwards">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32559-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLossCarryforwards</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Value of stock issued as a result of the exercise of stock options.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.29-31)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodValueStockOptionsExercised</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UnrecognizedTaxBenefits">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of unrecognized tax benefits.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 10B<br> -URI https://asc.fasb.org/extlink&amp;oid=123427490&amp;loc=SL37586934-109318<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 15A<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=SL6600010-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UnrecognizedTaxBenefits</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 15<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32718-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=ftek_FuelTechSpAMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=ftek_FuelTechSpAMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxAuthorityAxis=us-gaap_DomesticCountryMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignCountryMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignCountryMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxAuthorityNameAxis=us-gaap_MinistryOfEconomicAffairsAndFinanceItalyMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxAuthorityNameAxis=us-gaap_MinistryOfEconomicAffairsAndFinanceItalyMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxAuthorityNameAxis=us-gaap_StateAdministrationOfTaxationChinaMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxAuthorityNameAxis=us-gaap_StateAdministrationOfTaxationChinaMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>61
<FILENAME>R50.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296211280">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 3 - Income Taxes - Components of Income (Loss) Domestic and Foreign (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic', window );">United States</a></td>
<td class="num">$ (1,262)<span></span>
</td>
<td class="nump">$ 798<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign', window );">Foreign</a></td>
<td class="num">(126)<span></span>
</td>
<td class="num">(730)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes', window );">Income (loss) before income taxes</a></td>
<td class="num">$ (1,388)<span></span>
</td>
<td class="nump">$ 68<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.3)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.3)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Income before income taxes for oil and gas producing activities.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 932<br> -SubTopic 235<br> -Section 50<br> -Paragraph 23<br> -URI https://asc.fasb.org/extlink&amp;oid=126939881&amp;loc=d3e62136-109447<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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</div>
</body>
</html>
</TEXT>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>62
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<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
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</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296165728">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 3 - Income Taxes - Components of Income Tax Expense (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract', window );"><strong>Current:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CurrentFederalTaxExpenseBenefit', window );">Federal</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CurrentStateAndLocalTaxExpenseBenefit', window );">State</a></td>
<td class="num">(6)<span></span>
</td>
<td class="num">(9)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CurrentForeignTaxExpenseBenefit', window );">Foreign</a></td>
<td class="num">(10)<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CurrentIncomeTaxExpenseBenefit', window );">Total current</a></td>
<td class="num">(16)<span></span>
</td>
<td class="num">(9)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract', window );"><strong>Deferred:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredFederalIncomeTaxExpenseBenefit', window );">Federal</a></td>
<td class="num">(19)<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit', window );">State</a></td>
<td class="num">(19)<span></span>
</td>
<td class="num">(5)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredIncomeTaxExpenseBenefit', window );">Total deferred</a></td>
<td class="num">(38)<span></span>
</td>
<td class="num">(5)<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_IncomeTaxExpenseBenefit', window );">Income tax expense</a></td>
<td class="num">$ (54)<span></span>
</td>
<td class="num">$ (14)<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CurrentFederalTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of current federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current national tax expense (benefit) for non-US (United States of America) jurisdiction.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(1)(Note 1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.7)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32639-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CurrentFederalTaxExpenseBenefit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CurrentForeignTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of current foreign income tax expense (benefit) pertaining to income (loss) from continuing operations.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(1)(Note 1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32639-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CurrentForeignTaxExpenseBenefit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CurrentIncomeTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of current income tax expense (benefit) pertaining to taxable income (loss) from continuing operations.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.7)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(1)(Note 1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32639-109319<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.2)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<tr>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
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</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CurrentIncomeTaxExpenseBenefitContinuingOperationsAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CurrentStateAndLocalTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of current state and local tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, current regional, territorial, and provincial tax expense (benefit) for non-US (United States of America) jurisdiction.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(1)(Note 1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32639-109319<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.7)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CurrentStateAndLocalTaxExpenseBenefit</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
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<td><strong> Balance Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred federal tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, deferred national tax expense (benefit) for non-US (United States of America) jurisdiction.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.7)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(1)(Note 1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32639-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredFederalIncomeTaxExpenseBenefit</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredIncomeTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.7)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.1)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(1)(Note 1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.2)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32639-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredIncomeTaxExpenseBenefit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredIncomeTaxExpenseBenefitContinuingOperationsAbstract</td>
</tr>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
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<td><strong> Balance Type:</strong></td>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred state and local tax expense (benefit) attributable to income (loss) from continuing operations. Includes, but is not limited to, deferred regional, territorial, and provincial tax expense (benefit) for non-US (United States of America) jurisdiction.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32639-109319<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.7)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(1)(Note 1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredStateAndLocalIncomeTaxExpenseBenefit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeTaxExpenseBenefit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB TOPIC 6.I.7)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32672-109319<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (h)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 9<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22663-107794<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 20<br> -Section 45<br> -Paragraph 2<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=123586238&amp;loc=d3e38679-109324<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-04(9))<br> -URI https://asc.fasb.org/extlink&amp;oid=120400993&amp;loc=SL114874131-224263<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=124431687&amp;loc=d3e22658-107794<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeTaxExpenseBenefit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295962304">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 3 - Income Taxes - Income Tax Rate Reconciliation (Details)<br></strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate', window );">Provision at the U.S. federal statutory rate</a></td>
<td class="nump">21.00%<span></span>
</td>
<td class="nump">21.00%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes', window );">State taxes, net of federal benefit</a></td>
<td class="nump">3.10%<span></span>
</td>
<td class="num">(15.50%)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential', window );">Foreign tax rate differential</a></td>
<td class="nump">0.40%<span></span>
</td>
<td class="num">(30.20%)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance', window );">Valuation allowance</a></td>
<td class="num">(48.80%)<span></span>
</td>
<td class="num">(1504.60%)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent', window );">Chile outside basis differential</a></td>
<td class="nump">0.40%<span></span>
</td>
<td class="nump">34.40%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent', window );">PPP Loan Forgiveness</a></td>
<td class="nump">0.00%<span></span>
</td>
<td class="num">(484.60%)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent', window );">Accrual to return</a></td>
<td class="nump">3.10%<span></span>
</td>
<td class="num">(329.30%)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch', window );">Research and development credit</a></td>
<td class="nump">5.90%<span></span>
</td>
<td class="num">(144.90%)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate', window );">State rate change</a></td>
<td class="nump">9.50%<span></span>
</td>
<td class="num">(124.00%)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent', window );">China deferred adjustment</a></td>
<td class="nump">0.00%<span></span>
</td>
<td class="nump">1006.00%<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent', window );">China enterprise tax</a></td>
<td class="nump">0.00%<span></span>
</td>
<td class="nump">0.00%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent', window );">Share based compensation</a></td>
<td class="nump">3.30%<span></span>
</td>
<td class="nump">1590.30%<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent', window );">Other true up</a></td>
<td class="nump">0.00%<span></span>
</td>
<td class="nump">0.00%<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent', window );">Intangible assets impairment and other non-deductibles</a></td>
<td class="nump">0.00%<span></span>
</td>
<td class="nump">0.00%<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments', window );">Other</a></td>
<td class="num">(1.80%)<span></span>
</td>
<td class="nump">2.00%<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EffectiveIncomeTaxRateContinuingOperations', window );">Income tax (expense) benefit effective rate</a></td>
<td class="num">(3.90%)<span></span>
</td>
<td class="nump">20.60%<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to accrual to return.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_EffectiveIncomeTaxRateReconciliationAccrualToReturnPercent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to China Enterprise Tax.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_EffectiveIncomeTaxRateReconciliationChinaEnterpriseTaxPercent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to debt forgiveness.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_EffectiveIncomeTaxRateReconciliationDebtForgivenessPercent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign deferred adjustment.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_EffectiveIncomeTaxRateReconciliationForeignDeferredAdjustmentPercent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to impairment losses and other nondeductible expenses.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseImpairmentLossesAndOtherNonDeductiblespercent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other true up adjustments.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_EffectiveIncomeTaxRateReconciliationOtherTrueUpPercent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to outside basis differential.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_EffectiveIncomeTaxRateReconciliationOutsideBasisDifferentialPercent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateContinuingOperations">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32687-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateContinuingOperations</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of domestic federal statutory tax rate applicable to pretax income (loss).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.4)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(h)(2))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32687-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the valuation allowance for deferred tax assets.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.4)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32687-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to changes in the income tax rates.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.4)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32687-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateReconciliationChangeInEnactedTaxRate</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to statutory income tax expense (benefit) outside of the country of domicile.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32687-109319<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.4)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateReconciliationForeignIncomeTaxRateDifferential</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32687-109319<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.4)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateReconciliationOtherAdjustments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32687-109319<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 740<br> -Section 35<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126970579&amp;loc=d3e23163-113944<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations applicable to state and local income tax expense (benefit), net of federal tax expense (benefit).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.4)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32687-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to research tax credit.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 6.I.Fact.4)<br> -URI https://asc.fasb.org/extlink&amp;oid=122134291&amp;loc=d3e330036-122817<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 12<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32687-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EffectiveIncomeTaxRateReconciliationTaxCreditsResearch</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050289239680">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 3 - Income Taxes - Summary of Deferred Tax Assets and Liabilities (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsGrossAbstract', window );"><strong>Deferred tax assets:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost', window );">Stock compensation expense</a></td>
<td class="nump">$ 272<span></span>
</td>
<td class="nump">$ 173<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DeferredTaxAssetsGoodwill', window );">Goodwill</a></td>
<td class="nump">182<span></span>
</td>
<td class="nump">591<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals', window );">Royalty accruals</a></td>
<td class="nump">10<span></span>
</td>
<td class="nump">10<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts', window );">Bad debt allowance</a></td>
<td class="nump">53<span></span>
</td>
<td class="nump">51<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards', window );">Net operating loss carryforwards</a></td>
<td class="nump">12,158<span></span>
</td>
<td class="nump">11,950<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards', window );">Credit carry-forwards</a></td>
<td class="nump">1,058<span></span>
</td>
<td class="nump">992<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DeferredTaxAssetsInventoryReserve', window );">Inventory reserve</a></td>
<td class="nump">233<span></span>
</td>
<td class="nump">217<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_DeferredTaxAssetsDepreciation', window );">Depreciation</a></td>
<td class="nump">585<span></span>
</td>
<td class="nump">556<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch', window );">Research and Development Costs</a></td>
<td class="nump">528<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsOther', window );">Other</a></td>
<td class="nump">471<span></span>
</td>
<td class="nump">376<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsGross', window );">Total deferred tax assets</a></td>
<td class="nump">15,550<span></span>
</td>
<td class="nump">14,916<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxLiabilitiesAbstract', window );"><strong>Deferred tax liabilities:</strong></a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets', window );">Intangible assets</a></td>
<td class="num">(100)<span></span>
</td>
<td class="num">(105)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredIncomeTaxLiabilities', window );">Total deferred tax liabilities</a></td>
<td class="num">(100)<span></span>
</td>
<td class="num">(105)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_NetDeferredTaxAssetBeforeValuationAllowance', window );">Net deferred tax asset before valuation allowance</a></td>
<td class="nump">15,450<span></span>
</td>
<td class="nump">14,811<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsValuationAllowance', window );">Valuation allowances for deferred tax assets</a></td>
<td class="num">(15,627)<span></span>
</td>
<td class="num">(14,950)<span></span>
</td>
<td class="num">$ (15,971)<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxLiabilities', window );">Net deferred tax liability</a></td>
<td class="num">$ (177)<span></span>
</td>
<td class="num">$ (139)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DeferredTaxAssetsDepreciation">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from depreciation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DeferredTaxAssetsDepreciation</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DeferredTaxAssetsGoodwill">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from goodwill.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DeferredTaxAssetsGoodwill</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DeferredTaxAssetsInventoryReserve">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory reserve.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DeferredTaxAssetsInventoryReserve</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from royalty accruals.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_DeferredTaxAssetsTaxDeferredExpenseRoyaltyAccruals</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_NetDeferredTaxAssetBeforeValuationAllowance">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Net deferred tax asset before valuation allowance.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_NetDeferredTaxAssetBeforeValuationAllowance</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredIncomeTaxLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred tax liability attributable to taxable temporary differences.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(26)(b))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32537-109319<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03(15)(b)(2))<br> -URI https://asc.fasb.org/extlink&amp;oid=126734703&amp;loc=d3e572229-122910<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(15)(2))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(26)(a))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredIncomeTaxLiabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32537-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsGrossAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsGrossAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsOperatingLossCarryforwards">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32632-109319<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32621-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsOperatingLossCarryforwards</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsOther">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32621-109319<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32632-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsOther</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsTaxCreditCarryforwards">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32632-109319<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32559-109319<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32621-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsTaxCreditCarryforwards</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible research tax credit carryforwards.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32632-109319<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32559-109319<br><br>Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32621-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsTaxCreditCarryforwardsResearch</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32621-109319<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32632-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary difference from allowance for credit loss on accounts receivable.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32632-109319<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32621-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAllowanceForDoubtfulAccounts</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsValuationAllowance">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32537-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsValuationAllowance</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxLiabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences without jurisdictional netting.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 45<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=123427490&amp;loc=d3e31931-109318<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32537-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxLiabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxLiabilitiesAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- References</a><div><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxLiabilitiesAbstract</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:stringItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32621-109319<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32632-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
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</TEXT>
</DOCUMENT>
<DOCUMENT>
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<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296264560">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 3 - Income Taxes - Valuation Allowances (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsValuationAllowance', window );">Balance at January 1</a></td>
<td class="nump">$ 14,950<span></span>
</td>
<td class="nump">$ 15,971<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses', window );">Charged to costs and expenses</a></td>
<td class="nump">677<span></span>
</td>
<td class="num">(1,021)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount', window );">(Deductions)/Other</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredTaxAssetsValuationAllowance', window );">Balance at December 31</a></td>
<td class="nump">$ 15,627<span></span>
</td>
<td class="nump">$ 14,950<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount of change in valuation allowance deferred tax asset charged to costs and expenses.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_ValuationAllowanceDeferredTaxAssetChangeInAmountChargedToCostsAndExpenses</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredTaxAssetsValuationAllowance">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32537-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredTaxAssetsValuationAllowance</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 740<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=121826272&amp;loc=d3e32537-109319<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>66
<FILENAME>R55.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298709616">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 4 - Common Stock (Details Textual) - shares<br></strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommonStockSharesIssued', window );">Common Stock, Shares, Issued (in shares)</a></td>
<td class="nump">31,272,303<span></span>
</td>
<td class="nump">31,227,300<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommonStockSharesOutstanding', window );">Common Stock, Shares, Outstanding, Ending Balance (in shares)</a></td>
<td class="nump">30,296,297<span></span>
</td>
<td class="nump">30,263,791<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=ftek_ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember', window );">Reserved For Issuance Upon Exercise Or Vesting Of Equity Awards [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance', window );">Common Stock, Capital Shares Reserved for Future Issuance (in shares)</a></td>
<td class="nump">5,600,676<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementClassOfStockAxis=ftek_ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember', window );">Reserved For Issuance Upon Exercise Or Vesting Of Equity Awards [Member] | Share-Based Payment Arrangement, Option [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance', window );">Common Stock, Capital Shares Reserved for Future Issuance (in shares)</a></td>
<td class="nump">384,500<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember', window );">NIL Coupon Non-redeemable Convertible Unsecured Loan Notes [Member] | Unsecured Debt [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance', window );">Common Stock, Capital Shares Reserved for Future Issuance (in shares)</a></td>
<td class="nump">6,715<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockCapitalSharesReservedForFutureIssuance">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Aggregate number of common shares reserved for future issuance.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.29)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockCapitalSharesReservedForFutureIssuance</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CommonStockSharesIssued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesIssued</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CommonStockSharesOutstanding</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementClassOfStockAxis=ftek_ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementClassOfStockAxis=ftek_ReservedForIssuanceUponExerciseOrVestingOfEquityAwardsMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050379908736">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 5 - Treasury Stock (Details Textual) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TreasuryStockShares', window );">Treasury Stock, Shares, Total (in shares)</a></td>
<td class="nump">976,006<span></span>
</td>
<td class="nump">963,509<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_TreasuryStockValue', window );">Treasury Stock, Value, Total</a></td>
<td class="nump">$ 2,251<span></span>
</td>
<td class="nump">$ 2,234<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TreasuryStockShares">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.29,30)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 30<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6405813&amp;loc=d3e23239-112655<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TreasuryStockShares</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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</tr>
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</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_TreasuryStockValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 30<br> -Section 50<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=6405834&amp;loc=d3e23315-112656<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.29,30)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 30<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6405813&amp;loc=d3e23239-112655<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_TreasuryStockValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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</div>
</body>
</html>
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<DOCUMENT>
<TYPE>XML
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<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298686608">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 6 - Nil Coupon Non-redeemable Convertible Unsecured Loan Notes (Details Textual)<br> $ / shares in Units, $ in Thousands</strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th">
<div>Dec. 31, 2022 </div>
<div>USD ($) </div>
<div>$ / shares</div>
</th>
<th class="th">
<div>Dec. 31, 2021 </div>
<div>USD ($)</div>
</th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharePrice', window );">Share Price (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 1.27<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember', window );">Unsecured Debt [Member] | NIL Coupon Non-redeemable Convertible Unsecured Loan Notes [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentFaceAmount', window );">Debt Instrument, Face Amount | $</a></td>
<td class="nump">$ 76<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments', window );">Debt Instrument, Convertible, Number of Equity Instruments</a></td>
<td class="nump">6,715<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent', window );">Debt Instrument, Convertible, Carrying Amount of Equity Component | $</a></td>
<td class="nump">$ 9<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentInterestRateStatedPercentage', window );">Debt Instrument, Interest Rate, Stated Percentage</a></td>
<td class="nump">0.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentRepurchaseAmount', window );">Debt Instrument, Repurchase Amount | $</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember', window );">Unsecured Debt [Member] | NIL Coupon Non-redeemable Convertible Unsecured Loan Notes [Member] | Minimum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentConvertibleConversionPrice1', window );">Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 6.50<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember', window );">Unsecured Debt [Member] | NIL Coupon Non-redeemable Convertible Unsecured Loan Notes [Member] | Maximum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentConvertibleConversionPrice1', window );">Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 11.43<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent">
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The carrying amount of the equity component of convertible debt which may be settled in cash upon conversion.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=123466204&amp;loc=SL6031897-161870<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentConvertibleCarryingAmountOfTheEquityComponent</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>credit</td>
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<td><strong> Period Type:</strong></td>
<td>instant</td>
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<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The price per share of the conversion feature embedded in the debt instrument.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 50<br> -Paragraph 5<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=123466204&amp;loc=SL6031898-161870<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1B<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=123466505&amp;loc=SL123495323-112611<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentConvertibleConversionPrice1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The number of equity instruments that the holder of the debt instrument would receive if the debt was converted to equity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21475-112644<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 7<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21521-112644<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1B<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=123466505&amp;loc=SL123495323-112611<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 6<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21506-112644<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22(a)(5))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentConvertibleNumberOfEquityInstruments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:integerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentFaceAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Face (par) amount of debt instrument at time of issuance.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1B<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=123466505&amp;loc=SL123495323-112611<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=124435984&amp;loc=d3e28551-108399<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 55<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=114775985&amp;loc=d3e28878-108400<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=124429444&amp;loc=SL124452920-239629<br><br>Reference 5: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 55<br> -Paragraph 69C<br> -URI https://asc.fasb.org/extlink&amp;oid=123466577&amp;loc=SL123495737-112612<br><br>Reference 6: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 55<br> -Paragraph 69B<br> -URI https://asc.fasb.org/extlink&amp;oid=123466577&amp;loc=SL123495735-112612<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentFaceAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentInterestRateStatedPercentage">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Contractual interest rate for funds borrowed, under the debt agreement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1B<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=123466505&amp;loc=SL123495323-112611<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.22(a)(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentInterestRateStatedPercentage</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentRepurchaseAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Fair value amount of debt instrument that was repurchased.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentRepurchaseAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Price of a single share of a number of saleable stocks of a company.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LongtermDebtTypeAxis=us-gaap_UnsecuredDebtMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=ftek_NilCouponNonredeemableConvertibleUnsecuredLoanNotesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MinimumMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<td></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
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<td style="white-space:nowrap;">srt_RangeAxis=srt_MaximumMember</td>
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<td></td>
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<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050297988608">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 7 - Warrants (Details Textual)<br> $ / shares in Units, $ in Thousands</strong></div></th>
<th class="th" colspan="1"></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th">
<div>Feb. 11, 2021 </div>
<div>USD ($) </div>
<div>$ / shares </div>
<div>shares</div>
</th>
<th class="th">
<div>Dec. 31, 2022 </div>
<div>USD ($) </div>
<div>$ / shares </div>
<div>shares</div>
</th>
<th class="th">
<div>Dec. 31, 2021 </div>
<div>USD ($)</div>
</th>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued', window );">Class of Warrant or Right, Number of Warrants Issued (in shares)</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement', window );">Proceeds from Issuance of Private Placement | $</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 25,812<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PaymentsOfStockIssuanceCosts', window );">Payments of Stock Issuance Costs | $</a></td>
<td class="nump">$ 1,783<span></span>
</td>
<td class="nump">$ (0)<span></span>
</td>
<td class="nump">$ 1,783<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WarrantsAndRightsOutstanding', window );">Warrants and Rights Outstanding | $</a></td>
<td class="nump">$ 7,337<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember', window );">Measurement Input, Risk Free Interest Rate [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WarrantsAndRightsOutstandingMeasurementInput', window );">Warrants and Rights Outstanding, Measurement Input</a></td>
<td class="nump">0.0059<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember', window );">Measurement Input, Price Volatility [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WarrantsAndRightsOutstandingMeasurementInput', window );">Warrants and Rights Outstanding, Measurement Input</a></td>
<td class="nump">0.9466<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedTermMember', window );">Measurement Input, Expected Term [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WarrantsAndRightsOutstandingMeasurementInput', window );">Warrants and Rights Outstanding, Measurement Input</a></td>
<td class="nump">5.5<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember', window );">Warrants Issued in Connection with Private Placement [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued', window );">Class of Warrant or Right, Number of Warrants Issued (in shares)</a></td>
<td class="nump">2,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights', window );">Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)</a></td>
<td class="nump">2,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 5.10<span></span>
</td>
<td class="nump">$ 5.10<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WarrantsAndRightsOutstandingTerm', window );">Warrants and Rights Outstanding, Term (Year)</a></td>
<td class="text">5 years 6 months<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_ThePlacementAgentWarrantsMember', window );">The Placement Agent Warrants [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights', window );">Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)</a></td>
<td class="nump">350,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 6.45<span></span>
</td>
<td class="nump">$ 6.45<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_WarrantsAndRightsOutstandingTerm', window );">Warrants and Rights Outstanding, Term (Year)</a></td>
<td class="text">5 years 6 months<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember', window );">Private Placement [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues', window );">Stock Issued During Period, Shares, New Issues (in shares)</a></td>
<td class="nump">5,000,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharesIssuedPricePerShare', window );">Shares Issued, Price Per Share (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 5.1625<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement', window );">Proceeds from Issuance of Private Placement | $</a></td>
<td class="nump">$ 25,812<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PaymentsOfStockIssuanceCosts', window );">Payments of Stock Issuance Costs | $</a></td>
<td class="nump">$ 1,783<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember', window );">Private Placement [Member] | Warrants Issued in Connection with Private Placement [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued', window );">Class of Warrant or Right, Number of Warrants Issued (in shares)</a></td>
<td class="nump">2,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights', window );">Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)</a></td>
<td class="nump">2,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares</a></td>
<td class="nump">$ 5.10<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Represents number of warrants issued.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Exercise price per share or per unit of warrants or rights outstanding.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21475-112644<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21475-112644<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightNumberOfSecuritiesCalledByWarrantsOrRights</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PaymentsOfStockIssuanceCosts">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The cash outflow for cost incurred directly with the issuance of an equity security.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 15<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3291-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PaymentsOfStockIssuanceCosts</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromIssuanceOfPrivatePlacement">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceOfPrivatePlacement</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharesIssuedPricePerShare">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Per share or per unit amount of equity securities issued.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharesIssuedPricePerShare</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesNewIssues">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of new stock issued during the period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodSharesNewIssues</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WarrantsAndRightsOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WarrantsAndRightsOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WarrantsAndRightsOutstandingMeasurementInput">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (bbb)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=126976982&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WarrantsAndRightsOutstandingMeasurementInput</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:decimalItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_WarrantsAndRightsOutstandingTerm">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 820<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (bbb)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=126976982&amp;loc=d3e19207-110258<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_WarrantsAndRightsOutstandingTerm</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputRiskFreeInterestRateMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputPriceVolatilityMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedTermMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_MeasurementInputTypeAxis=us-gaap_MeasurementInputExpectedTermMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_ThePlacementAgentWarrantsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=ftek_ThePlacementAgentWarrantsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SubsidiarySaleOfStockAxis=us-gaap_PrivatePlacementMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>70
<FILENAME>R59.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050300888320">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 7 - Warrants - Warrant Activity (Details)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
</tr>
<tr><th class="th">
<div>Dec. 31, 2022 </div>
<div>shares</div>
</th></tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Beginning balance (in shares)</a></td>
<td class="nump">2,850,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued', window );">Granted (in shares)</a></td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ClassOfWarrantOrRightExercisedDuringPeriod', window );">Exercised (in shares)</a></td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Ending balance (in shares)</a></td>
<td class="nump">2,850,000<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_ClassOfWarrantOrRightExercisedDuringPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The number of warrants or rights exercised during period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_ClassOfWarrantOrRightExercisedDuringPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Represents number of warrants issued.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_ClassOfWarrantOrRightNumberOfWarrantsIssued</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of warrants or rights outstanding.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>71
<FILENAME>R60.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295432608">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 7 - Warrants - Summary of Warrants Outstanding and Exercisable (Details) - $ / shares<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
<th class="th" colspan="1"></th>
<th class="th" colspan="1"></th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
<th class="th"><div>Feb. 11, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Number outstanding/ exercisable (in shares)</a></td>
<td class="nump">2,850,000<span></span>
</td>
<td class="nump">2,850,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember', window );">Warrants Issued in Connection with Private Placement [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Number outstanding/ exercisable (in shares)</a></td>
<td class="nump">2,500,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ClassOfWarrantOrRightWeightedAverageRemainingLife', window );">Weighted average remaining life (Year)</a></td>
<td class="text">3 years 7 months 13 days<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Weighted average exercise price (in dollars per share)</a></td>
<td class="nump">$ 5.10<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 5.10<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_ThePlacementAgentWarrantsMember', window );">The Placement Agent Warrants [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightOutstanding', window );">Number outstanding/ exercisable (in shares)</a></td>
<td class="nump">350,000<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_ClassOfWarrantOrRightWeightedAverageRemainingLife', window );">Weighted average remaining life (Year)</a></td>
<td class="text">3 years 7 months 13 days<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1', window );">Weighted average exercise price (in dollars per share)</a></td>
<td class="nump">$ 6.45<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 6.45<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_ClassOfWarrantOrRightWeightedAverageRemainingLife">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The weighted average remaining life of warrants or rights.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_ClassOfWarrantOrRightWeightedAverageRemainingLife</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Exercise price per share or per unit of warrants or rights outstanding.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21475-112644<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightExercisePriceOfWarrantsOrRights1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightOutstanding">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of warrants or rights outstanding.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightOutstanding</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=ftek_WarrantsIssuedInConnectionWithPrivatePlacementMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ClassOfWarrantOrRightAxis=ftek_ThePlacementAgentWarrantsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ClassOfWarrantOrRightAxis=ftek_ThePlacementAgentWarrantsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
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<DOCUMENT>
<TYPE>XML
<SEQUENCE>72
<FILENAME>R61.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295857376">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 8 - Stock-based Compensation (Details Textual) - USD ($)<br> $ / shares in Units, $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross', window );">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharePrice', window );">Share Price (in dollars per share)</a></td>
<td class="nump">$ 1.27<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ProceedsFromStockOptionsExercised', window );">Proceeds from Stock Options Exercised</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis=ftek_DeferredCompensationPlanForDirectorsMember', window );">Deferred Compensation Plan for Directors [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense', window );">Deferred Compensation Arrangement with Individual, Compensation Expense</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember', window );">Restricted Stock Units (RSUs) [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod', window );">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)</a></td>
<td class="nump">45,003<span></span>
</td>
<td class="nump">50,002<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember', window );">The 2014 Long-term Incentive Plan [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized', window );">Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)</a></td>
<td class="nump">5,600,676<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant', window );">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)</a></td>
<td class="nump">1,899,250<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense', window );">Share-Based Payment Arrangement, Expense, Tax Benefit</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember', window );">The 2014 Long-term Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod', window );">Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)</a></td>
<td class="text">10 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross', window );">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions', window );">Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember', window );">The 2014 Long-term Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche One [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage', window );">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage</a></td>
<td class="nump">50.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember', window );">The 2014 Long-term Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche Two [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage', window );">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage</a></td>
<td class="nump">25.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember', window );">The 2014 Long-term Incentive Plan [Member] | Share-Based Payment Arrangement, Option [Member] | Share-Based Payment Arrangement, Tranche Three [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage', window );">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage</a></td>
<td class="nump">25.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember', window );">The 2014 Long-term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod', window );">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)</a></td>
<td class="nump">45,003<span></span>
</td>
<td class="nump">50,002<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue', window );">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value</a></td>
<td class="nump">$ 68<span></span>
</td>
<td class="nump">$ 75<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized', window );">Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total</a></td>
<td class="nump">$ 738<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1', window );">Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)</a></td>
<td class="text">2 years 4 months 24 days<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember', window );">The 2014 Long-term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Minimum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1', window );">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)</a></td>
<td class="text">2 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember', window );">The 2014 Long-term Incentive Plan [Member] | Restricted Stock Units (RSUs) [Member] | Maximum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1', window );">Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)</a></td>
<td class="text">4 years<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The compensation expense recognized during the period pertaining to the deferred compensation arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5047-113901<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 710<br> -SubTopic 10<br> -Section 30<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6409875&amp;loc=d3e20015-108363<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cost not yet recognized for nonvested award under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (i)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (i)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cost to be recognized for option under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (i)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedStockOptions</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of tax benefit for recognition of expense of award under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (h)(1)(i)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromStockOptionsExercised">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash inflow from exercise of option under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2A<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=SL79508275-113901<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromStockOptionsExercised</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(iii)(02)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (d)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of shares authorized for issuance under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(3)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Gross number of share options (or share units) granted during the period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)(01)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Price of a single share of a number of saleable stocks of a company.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of vesting of award under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardAwardVestingRightsPercentage</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (a)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis=ftek_DeferredCompensationPlanForDirectorsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis=ftek_DeferredCompensationPlanForDirectorsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PlanNameAxis=ftek_The2014LongTermIncentivePlanMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheOneMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheOneMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheTwoMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheTwoMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheThreeMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_VestingAxis=us-gaap_ShareBasedCompensationAwardTrancheThreeMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RangeAxis=srt_MinimumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MinimumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RangeAxis=srt_MaximumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MaximumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>73
<FILENAME>R62.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298647088">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 8 - Stock-based Compensation - Stock-based Compensation (Details) - Selling, General and Administrative Expenses [Member] - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AllocatedShareBasedCompensationExpense', window );">Stock options and restricted stock units, net of forfeitures</a></td>
<td class="nump">$ 224<span></span>
</td>
<td class="nump">$ 82<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax', window );">After-tax effect of stock based compensation</a></td>
<td class="nump">$ 224<span></span>
</td>
<td class="nump">$ 82<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AllocatedShareBasedCompensationExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (h)(1)(i)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AllocatedShareBasedCompensationExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, after tax, of expense for award under share-based payment arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>74
<FILENAME>R63.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050292670256">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 8 - Stock-based Compensation - Stock Option Activity (Details) - USD ($)<br> $ / shares in Units, $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber', window );">Outstanding at beginning of year, options (in shares)</a></td>
<td class="nump">434,500<span></span>
</td>
<td class="nump">484,500<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice', window );">Outstanding at beginning of year, option, weighted average exercise price (in dollars per share)</a></td>
<td class="nump">$ 3.05<span></span>
</td>
<td class="nump">$ 3.57<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross', window );">Granted, options (in shares)</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice', window );">Granted, option, weighted average exercise price (in dollars per share)</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised', window );">Exercised, options (in shares)</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice', window );">Exercised, option, weighted average exercise price (in dollars per share)</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod', window );">Expired or forfeited, options (in shares)</a></td>
<td class="num">(50,000)<span></span>
</td>
<td class="num">(50,000)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice', window );">Expired or forfeited, option, weighted average exercise price (in dollars per share)</a></td>
<td class="nump">$ 3.55<span></span>
</td>
<td class="nump">$ 8.16<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber', window );">Outstanding at end of year, options (in shares)</a></td>
<td class="nump">384,500<span></span>
</td>
<td class="nump">434,500<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice', window );">Outstanding at end of year, option, weighted average exercise price (in dollars per share)</a></td>
<td class="nump">$ 2.98<span></span>
</td>
<td class="nump">$ 3.05<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber', window );">Exercisable, options (in shares)</a></td>
<td class="nump">384,500<span></span>
</td>
<td class="nump">434,500<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice', window );">Exercisable, option, weighted average exercise price (in dollars per share)</a></td>
<td class="nump">$ 2.98<span></span>
</td>
<td class="nump">$ 3.05<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1', window );">Weighted-Average Remaining Contractual Life (years) (Year)</a></td>
<td class="text">2 years 5 months 4 days<span></span>
</td>
<td class="text">3 years 29 days<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1', window );">Aggregate Intrinsic Value</a></td>
<td class="nump">$ 27<span></span>
</td>
<td class="nump">$ 38<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iii)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iii)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Weighted average price of options that were either forfeited or expired.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Gross number of share options (or share units) granted during the period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)(01)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of options outstanding, including both vested and non-vested options.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(ii)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(i)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(ii)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(i)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Weighted average price at which option holders acquired shares when converting their stock options into shares.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)(02)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)(01)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of share options (or share units) exercised during the current period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(iv)(02)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.3-04)<br> -URI https://asc.fasb.org/extlink&amp;oid=120397183&amp;loc=d3e187085-122770<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(28))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02(29))<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 505<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126973232&amp;loc=d3e21463-112644<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295489824">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 8 - Stock-based Compensation - Summary of Outstanding Stock Options by Exercise Price Range (Details)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
</tr>
<tr><th class="th">
<div>Dec. 31, 2022 </div>
<div>$ / shares </div>
<div>shares</div>
</th></tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions', window );">Number of Options (in shares) | shares</a></td>
<td class="nump">384,500<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2', window );">Weighted- Average Remaining Contractual Life (Year)</a></td>
<td class="text">2 years 4 months 24 days<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1', window );">Weighted-Average Exercise Price (in dollars per share)</a></td>
<td class="nump">$ 2.98<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ftek_RangeOneMember', window );">Range One [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit', window );">Lower Range Limit (in dollars per share)</a></td>
<td class="nump">0.96<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit', window );">Upper Range Limit (in dollars per share)</a></td>
<td class="nump">$ 1.27<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions', window );">Number of Options (in shares) | shares</a></td>
<td class="nump">88,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2', window );">Weighted- Average Remaining Contractual Life (Year)</a></td>
<td class="text">4 years 10 months 24 days<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1', window );">Weighted-Average Exercise Price (in dollars per share)</a></td>
<td class="nump">$ 0.97<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ftek_RangeTwoMember', window );">Range Two [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit', window );">Lower Range Limit (in dollars per share)</a></td>
<td class="nump">1.28<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit', window );">Upper Range Limit (in dollars per share)</a></td>
<td class="nump">$ 2.01<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions', window );">Number of Options (in shares) | shares</a></td>
<td class="nump">27,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2', window );">Weighted- Average Remaining Contractual Life (Year)</a></td>
<td class="text">3 years 4 months 24 days<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1', window );">Weighted-Average Exercise Price (in dollars per share)</a></td>
<td class="nump">$ 1.58<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ftek_RangeThreeMember', window );">Range Three [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit', window );">Lower Range Limit (in dollars per share)</a></td>
<td class="nump">2.02<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit', window );">Upper Range Limit (in dollars per share)</a></td>
<td class="nump">$ 3.15<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions', window );">Number of Options (in shares) | shares</a></td>
<td class="nump">105,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2', window );">Weighted- Average Remaining Contractual Life (Year)</a></td>
<td class="text">2 years 4 months 24 days<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1', window );">Weighted-Average Exercise Price (in dollars per share)</a></td>
<td class="nump">$ 2.44<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ftek_RangeFourMember', window );">Range Four [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit', window );">Lower Range Limit (in dollars per share)</a></td>
<td class="nump">3.16<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit', window );">Upper Range Limit (in dollars per share)</a></td>
<td class="nump">$ 4.54<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions', window );">Number of Options (in shares) | shares</a></td>
<td class="nump">70,000<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2', window );">Weighted- Average Remaining Contractual Life (Year)</a></td>
<td class="text">4 months 24 days<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1', window );">Weighted-Average Exercise Price (in dollars per share)</a></td>
<td class="nump">$ 3.85<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ftek_RangeFiveMember', window );">Range Five [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit', window );">Lower Range Limit (in dollars per share)</a></td>
<td class="nump">4.55<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit', window );">Upper Range Limit (in dollars per share)</a></td>
<td class="nump">$ 5.22<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions', window );">Number of Options (in shares) | shares</a></td>
<td class="nump">94,500<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2', window );">Weighted- Average Remaining Contractual Life (Year)</a></td>
<td class="text">1 year 4 months 24 days<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1', window );">Weighted-Average Exercise Price (in dollars per share)</a></td>
<td class="nump">$ 5.22<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (g)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeLowerRangeLimit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(i)-(ii)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfOutstandingOptions</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (g)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeUpperRangeLimit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(1)(i)-(ii)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePriceBeginningBalance1</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (e)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeOutstandingOptionsWeightedAverageRemainingContractualTerm2</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
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<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ftek_RangeThreeMember</td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ftek_RangeFourMember</td>
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<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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<td><strong> Data Type:</strong></td>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
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<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAxis=ftek_RangeFiveMember</td>
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<head>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295431328">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 8 - Stock-based Compensation - Restricted Stock Activity (Details) - Restricted Stock Units (RSUs) [Member] - $ / shares<br></strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber', window );">Beginning balance, unvested restricted stock units, shares (in shares)</a></td>
<td class="nump">45,003<span></span>
</td>
<td class="nump">100,005<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue', window );">Beginning balance, unvested restricted stock units, weighted average grant date fair value (in dollars per share)</a></td>
<td class="nump">$ 1.51<span></span>
</td>
<td class="nump">$ 1.50<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod', window );">Forfeited, restricted stock units, shares (in shares)</a></td>
<td class="num">(40,000)<span></span>
</td>
<td class="num">(5,000)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue', window );">Forfeited, restricted stock units, weighted average grant date fair value (in dollars per share)</a></td>
<td class="nump">$ 1.32<span></span>
</td>
<td class="nump">$ 0.97<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod', window );">Vested, restricted stock units, shares (in shares)</a></td>
<td class="num">(45,003)<span></span>
</td>
<td class="num">(50,002)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue', window );">Vested, restricted stock units, weighted average grant date fair value (in dollars per share)</a></td>
<td class="nump">$ 1.51<span></span>
</td>
<td class="nump">$ 1.50<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod', window );">Granted, unvested restricted stock units, shares (in shares)</a></td>
<td class="nump">807,048<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue', window );">Granted, unvested restricted stock units, weighted average grant date fair value (in dollars per share)</a></td>
<td class="nump">$ 1.32<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber', window );">Ending balance, unvested restricted stock units, shares (in shares)</a></td>
<td class="nump">767,048<span></span>
</td>
<td class="nump">45,003<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue', window );">Ending balance, unvested restricted stock units, weighted average grant date fair value (in dollars per share)</a></td>
<td class="nump">$ 1.32<span></span>
</td>
<td class="nump">$ 1.51<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(iii)(03)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(iii)(03)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
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<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(iii)(01)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
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<td><strong> Period Type:</strong></td>
<td>duration</td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(iii)(01)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
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<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
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<td><strong> Balance Type:</strong></td>
<td>na</td>
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<td><strong> Period Type:</strong></td>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(ii)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(i)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(i)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(ii)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(iii)(02)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:sharesItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 718<br> -SubTopic 10<br> -Section 50<br> -Paragraph 2<br> -Subparagraph (c)(2)(iii)(02)<br> -URI https://asc.fasb.org/extlink&amp;oid=128089324&amp;loc=d3e5070-113901<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:perShareItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050291599792">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 9 - Commitments and Contingencies (Details Textual) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LettersOfCreditOutstandingAmount', window );">Letters of Credit Outstanding, Amount</a></td>
<td class="nump">$ 689<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease', window );">Standard Product Warranty Accrual, Period Increase (Decrease), Total</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StandardProductWarrantyAccrual', window );">Standard Product Warranty Accrual, Ending Balance</a></td>
<td class="nump">159<span></span>
</td>
<td class="nump">159<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=ftek_PerformanceGuaranteesMember', window );">Performance Guarantees [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentFaceAmount', window );">Debt Instrument, Face Amount</a></td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CreditFacilityAxis=us-gaap_StandbyLettersOfCreditMember', window );">Standby Letters of Credit [Member] | Cash Collateral Security Agreement [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LettersOfCreditOutstandingAmount', window );">Letters of Credit Outstanding, Amount</a></td>
<td class="nump">689<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_BalanceSheetLocationAxis=ftek_OtherAccruedLiabilitiesMember', window );">Other Accrued Liabilities [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LossContingencyAccrualAtCarryingValue', window );">Loss Contingency Accrual, Ending Balance</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentFaceAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Face (par) amount of debt instrument at time of issuance.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1B<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=123466505&amp;loc=SL123495323-112611<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=124435984&amp;loc=d3e28551-108399<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 55<br> -Paragraph 8<br> -URI https://asc.fasb.org/extlink&amp;oid=114775985&amp;loc=d3e28878-108400<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 835<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=124429444&amp;loc=SL124452920-239629<br><br>Reference 5: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 55<br> -Paragraph 69C<br> -URI https://asc.fasb.org/extlink&amp;oid=123466577&amp;loc=SL123495737-112612<br><br>Reference 6: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 20<br> -Section 55<br> -Paragraph 69B<br> -URI https://asc.fasb.org/extlink&amp;oid=123466577&amp;loc=SL123495735-112612<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentFaceAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LettersOfCreditOutstandingAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LettersOfCreditOutstandingAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LossContingencyAccrualAtCarryingValue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of loss contingency liability.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=121557415&amp;loc=d3e14326-108349<br><br>Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 450<br> -SubTopic 20<br> -Section 50<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=121557415&amp;loc=d3e14615-108349<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LossContingencyAccrualAtCarryingValue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StandardProductWarrantyAccrual">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount as of the balance sheet date of the aggregate standard product warranty liability. Does not include the balance for the extended product warranty liability.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 460<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -Subparagraph (c)(1),(c)(5)<br> -URI https://asc.fasb.org/extlink&amp;oid=126907703&amp;loc=d3e12565-110249<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StandardProductWarrantyAccrual</td>
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<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of increase (decrease) in the standard product warranty accrual. Excludes extended product warranties.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 460<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126907703&amp;loc=d3e12565-110249<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StandardProductWarrantyAccrualPeriodIncreaseDecrease</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=ftek_PerformanceGuaranteesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=ftek_PerformanceGuaranteesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CreditFacilityAxis=us-gaap_StandbyLettersOfCreditMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CreditFacilityAxis=us-gaap_StandbyLettersOfCreditMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=ftek_CashCollateralSecurityAgreementMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=ftek_CashCollateralSecurityAgreementMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_BalanceSheetLocationAxis=ftek_OtherAccruedLiabilitiesMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_BalanceSheetLocationAxis=ftek_OtherAccruedLiabilitiesMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
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<DESCRIPTION>IDEA: XBRL DOCUMENT
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<head>
<title></title>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298737328">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 10 - Leases (Details Textual)<br></strong></div></th>
<th class="th">
<div>Dec. 31, 2022 </div>
<div>ft&#178;</div>
</th>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_AdditionalNumberOfLeases', window );">Additional Number of Leases</a></td>
<td class="nump">3<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1', window );">Operating Lease, Weighted Average Remaining Lease Term (Year)</a></td>
<td class="text">1 year 9 months 7 days<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent', window );">Operating Lease, Weighted Average Discount Rate, Percent</a></td>
<td class="nump">4.48%<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_RangeAxis=srt_MinimumMember', window );">Minimum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm', window );">Lessee, Operating Lease, Remaining Lease Term (Year)</a></td>
<td class="text">1 year<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_RangeAxis=srt_MaximumMember', window );">Maximum [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm', window );">Lessee, Operating Lease, Remaining Lease Term (Year)</a></td>
<td class="text">2 years 4 months 24 days<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_OfficeBuildingMember', window );">Office Building [Member] | Gallarate Italy [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AreaOfRealEstateProperty', window );">Area of Real Estate Property (Square Foot)</a></td>
<td class="nump">1,335<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_OfficeBuildingMember', window );">Office Building [Member] | Aurora Illinois [Member]]</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AreaOfRealEstateProperty', window );">Area of Real Estate Property (Square Foot)</a></td>
<td class="nump">11,000<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_OfficeBuildingMember', window );">Office Building [Member] | Overland Park [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AreaOfRealEstateProperty', window );">Area of Real Estate Property (Square Foot)</a></td>
<td class="nump">600<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_AdditionalNumberOfLeases">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Additional Number Of Leases</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_AdditionalNumberOfLeases</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:integerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AreaOfRealEstateProperty">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Area of a real estate property.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AreaOfRealEstateProperty</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:areaItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LesseeOperatingLeaseRemainingLeaseTerm">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Remaining lease term of operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (a)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918673-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LesseeOperatingLeaseRemainingLeaseTerm</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Weighted average discount rate for operating lease calculated at point in time.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (g)(4)<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918686-209980<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 55<br> -Paragraph 53<br> -URI https://asc.fasb.org/extlink&amp;oid=123414884&amp;loc=SL77918982-209971<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseWeightedAverageDiscountRatePercent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 55<br> -Paragraph 53<br> -URI https://asc.fasb.org/extlink&amp;oid=123414884&amp;loc=SL77918982-209971<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (g)(3)<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918686-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseWeightedAverageRemainingLeaseTerm1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:durationItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RangeAxis=srt_MinimumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MinimumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RangeAxis=srt_MaximumMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RangeAxis=srt_MaximumMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_OfficeBuildingMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis=srt_OfficeBuildingMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ftek_GallarateItalyMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ftek_GallarateItalyMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ftek_AuroraIllinoisMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ftek_AuroraIllinoisMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ftek_OverlandParkMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=ftek_OverlandParkMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
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</div>
</body>
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</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>79
<FILENAME>R68.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296978656">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 10 - Leases - Operating Lease Expense (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeaseCost', window );">Operating lease cost</a></td>
<td class="nump">$ 176<span></span>
</td>
<td class="nump">$ 198<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ShortTermLeaseCost', window );">Short-term lease cost</a></td>
<td class="nump">29<span></span>
</td>
<td class="nump">21<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LeaseCost', window );">Total lease cost</a></td>
<td class="nump">$ 205<span></span>
</td>
<td class="nump">$ 219<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LeaseCost">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of lease cost recognized by lessee for lease contract.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918686-209980<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 55<br> -Paragraph 53<br> -URI https://asc.fasb.org/extlink&amp;oid=123414884&amp;loc=SL77918982-209971<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LeaseCost</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseCost">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 55<br> -Paragraph 53<br> -URI https://asc.fasb.org/extlink&amp;oid=123414884&amp;loc=SL77918982-209971<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918686-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseCost</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ShortTermLeaseCost">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of short-term lease cost, excluding expense for lease with term of one month or less.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918686-209980<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 55<br> -Paragraph 53<br> -URI https://asc.fasb.org/extlink&amp;oid=123414884&amp;loc=SL77918982-209971<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ShortTermLeaseCost</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>80
<FILENAME>R69.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
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</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050296250624">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 10 - Leases - Remaining Maturities of Existing Lease Liabilities (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths', window );">2023</a></td>
<td class="nump">$ 149<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo', window );">2024</a></td>
<td class="nump">61<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree', window );">2025</a></td>
<td class="nump">13<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree', window );">Thereafter</a></td>
<td class="nump">0<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue', window );">Total lease payments</a></td>
<td class="nump">223<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount', window );">Less imputed interest</a></td>
<td class="num">(32)<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeaseLiability', window );">Total</a></td>
<td class="nump">$ 191<span></span>
</td>
<td class="nump">$ 235<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of lessee's undiscounted obligation for lease payment for operating lease due after third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_LesseeOperatingLeaseLiabilityToBePaidAfterYearThree</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of lessee's undiscounted obligation for lease payment for operating lease.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918701-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918701-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918701-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of lessee's undiscounted obligation for lease payment for operating lease to be paid in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918701-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of lessee's undiscounted obligation for lease payments in excess of discounted obligation for lease payments for operating lease.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 6<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918701-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseLiability">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Present value of lessee's discounted obligation for lease payments from operating lease.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=123391704&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseLiability</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>81
<FILENAME>R70.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050297101424">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 10 - Leases - Lease Liabilities (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeaseLiabilityCurrent', window );">Operating lease liabilities - current</a></td>
<td class="nump">$ 125<span></span>
</td>
<td class="nump">$ 113<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeaseLiabilityNoncurrent', window );">Operating lease liabilities - non-current</a></td>
<td class="nump">66<span></span>
</td>
<td class="nump">122<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeaseLiability', window );">Total operating lease liabilities</a></td>
<td class="nump">$ 191<span></span>
</td>
<td class="nump">$ 235<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseLiability">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Present value of lessee's discounted obligation for lease payments from operating lease.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=123391704&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseLiability</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseLiabilityCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=123391704&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseLiabilityCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeaseLiabilityNoncurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 1<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=123391704&amp;loc=SL77918627-209977<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeaseLiabilityNoncurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>82
<FILENAME>R71.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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							e.nextSibling.style.display='block';
							} else { e.nextSibling.style.display='none'; }
							}</script>
</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050300872192">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 10 - Leases - Supplemental Cash Flow Information (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingLeasePayments', window );">Cash paid for amounts included in the measurement of lease liabilities</a></td>
<td class="nump">$ 157<span></span>
</td>
<td class="nump">$ 178<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability', window );">Leased assets obtained in exchange for operating lease liabilities</a></td>
<td class="nump">$ 139<span></span>
</td>
<td class="nump">$ 158<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingLeasePayments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 45<br> -Paragraph 5<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=123391704&amp;loc=SL77918643-209977<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (g)(1)<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918686-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingLeasePayments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of increase in right-of-use asset obtained in exchange for operating lease liability.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 55<br> -Paragraph 53<br> -URI https://asc.fasb.org/extlink&amp;oid=123414884&amp;loc=SL77918982-209971<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 842<br> -SubTopic 20<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (g)(2)<br> -URI https://asc.fasb.org/extlink&amp;oid=128292326&amp;loc=SL77918686-209980<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>83
<FILENAME>R72.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
							if (e.nextSibling.style.display=='none') {
							e.nextSibling.style.display='block';
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</head>
<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050297918944">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 11 - Debt Financing (Details Textual) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Jun. 30, 2022</div></th>
<th class="th"><div>Jan. 08, 2021</div></th>
<th class="th"><div>Apr. 17, 2020</div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral', window );">Percentage of Face Amount of Letters of Credit As Collateral</a></td>
<td class="nump">150.00%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit', window );">Payment, Basis Points on Face Value of Letters of Credit</a></td>
<td class="nump">2.50%<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_LettersOfCreditOutstandingAmount', window );">Letters of Credit Outstanding, Amount</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 689<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentAxis=ftek_PaycheckProtectionProgramCaresActMember', window );">Paycheck Protection Program CARES Act [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ProceedsFromIssuanceOfLongTermDebt', window );">Proceeds from Issuance of Long-term Debt, Total</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,556<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_DebtInstrumentDecreaseForgiveness', window );">Debt Instrument, Decrease, Forgiveness</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,556<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_PledgedStatusAxis=us-gaap_AssetPledgedAsCollateralMember', window );">Asset Pledged as Collateral [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Investments', window );">Investments, Total</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
<td class="nump">$ 1,034<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Payment as basis points on face value of letters of credit.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_PaymentBasisPointsOnFaceValueOfLettersOfCredit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Percentage of face amount of letters of credit as collateral.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_PercentageOfFaceAmountOfLettersOfCreditAsCollateral</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>dtr-types:percentItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentDecreaseForgiveness">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Decrease for amounts of indebtedness forgiven by the holder of the debt instrument.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(f))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentDecreaseForgiveness</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Investments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all investments.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 944<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.7-03.1(h))<br> -URI https://asc.fasb.org/extlink&amp;oid=126734703&amp;loc=d3e572229-122910<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Investments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_LettersOfCreditOutstandingAmount">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_LettersOfCreditOutstandingAmount</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ProceedsFromIssuanceOfLongTermDebt">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 14<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3255-108585<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ProceedsFromIssuanceOfLongTermDebt</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_DebtInstrumentAxis=ftek_PaycheckProtectionProgramCaresActMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_DebtInstrumentAxis=ftek_PaycheckProtectionProgramCaresActMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_PledgedStatusAxis=us-gaap_AssetPledgedAsCollateralMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_PledgedStatusAxis=us-gaap_AssetPledgedAsCollateralMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>84
<FILENAME>R73.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050300936384">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 12 - Business Segment and Geographic Financial Data (Details Textual)<br></strong></div></th>
<th class="th" colspan="1">12 Months Ended</th>
</tr>
<tr><th class="th"><div>Dec. 31, 2022</div></th></tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NumberOfReportableSegments', window );">Number of Reportable Segments</a></td>
<td class="nump">2<span></span>
</td>
</tr>
</table>
<div style="display: none;"><table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NumberOfReportableSegments">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 18<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8672-108599<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NumberOfReportableSegments</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:integerItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table></div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>85
<FILENAME>R74.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
							function toggleNextSibling (e) {
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<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050295861200">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 12 - Business Segment and Geographic Financial Data - Reporting Segment Net Sales and Gross Margin (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues from external customers</a></td>
<td class="nump">$ 26,941<span></span>
</td>
<td class="nump">$ 24,261<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CostOfRevenue', window );">Cost of sales</a></td>
<td class="num">(15,298)<span></span>
</td>
<td class="num">(12,363)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_GrossProfit', window );">Gross margin</a></td>
<td class="nump">11,643<span></span>
</td>
<td class="nump">11,898<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SellingGeneralAndAdministrativeExpense', window );">Selling, general and administrative</a></td>
<td class="num">(12,275)<span></span>
</td>
<td class="num">(12,055)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ResearchAndDevelopmentExpense', window );">Research and development</a></td>
<td class="num">(895)<span></span>
</td>
<td class="num">(1,332)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income (loss) from continuing operations</a></td>
<td class="num">(1,527)<span></span>
</td>
<td class="num">(1,489)<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_AirPollutionControlMember', window );">Air Pollution Control [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues from external customers</a></td>
<td class="nump">10,597<span></span>
</td>
<td class="nump">6,896<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CostOfRevenue', window );">Cost of sales</a></td>
<td class="num">(6,924)<span></span>
</td>
<td class="num">(3,529)<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_GrossProfit', window );">Gross margin</a></td>
<td class="nump">3,673<span></span>
</td>
<td class="nump">3,367<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SellingGeneralAndAdministrativeExpense', window );">Selling, general and administrative</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ResearchAndDevelopmentExpense', window );">Research and development</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income (loss) from continuing operations</a></td>
<td class="nump">3,673<span></span>
</td>
<td class="nump">3,367<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=ftek_FUELCHEMMember', window );">FUEL CHEM [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues from external customers</a></td>
<td class="nump">16,344<span></span>
</td>
<td class="nump">17,365<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CostOfRevenue', window );">Cost of sales</a></td>
<td class="num">(8,374)<span></span>
</td>
<td class="num">(8,834)<span></span>
</td>
</tr>
<tr class="reu">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_GrossProfit', window );">Gross margin</a></td>
<td class="nump">7,970<span></span>
</td>
<td class="nump">8,531<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SellingGeneralAndAdministrativeExpense', window );">Selling, general and administrative</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ResearchAndDevelopmentExpense', window );">Research and development</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income (loss) from continuing operations</a></td>
<td class="nump">7,970<span></span>
</td>
<td class="nump">8,531<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember', window );">Other Segments [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues from external customers</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_CostOfRevenue', window );">Cost of sales</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_GrossProfit', window );">Gross margin</a></td>
<td class="nump">0<span></span>
</td>
<td class="nump">0<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_SellingGeneralAndAdministrativeExpense', window );">Selling, general and administrative</a></td>
<td class="num">(12,275)<span></span>
</td>
<td class="num">(12,055)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ResearchAndDevelopmentExpense', window );">Research and development</a></td>
<td class="num">(895)<span></span>
</td>
<td class="num">(1,332)<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OperatingIncomeLoss', window );">Operating income (loss) from continuing operations</a></td>
<td class="num">$ (13,170)<span></span>
</td>
<td class="num">$ (13,387)<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_CostOfRevenue">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The aggregate cost of goods produced and sold and services rendered during the reporting period.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(5))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=123596393&amp;loc=d3e14064-108612<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(iv))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.2)<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 323<br> -SubTopic 10<br> -Section 50<br> -Paragraph 3<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=114001798&amp;loc=d3e33918-111571<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(5))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(i))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iii)(B))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iii)(A))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(i))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 12: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(iii)(A))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 13: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(ii))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 14: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iv))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_CostOfRevenue</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_GrossProfit">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 31<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8924-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 4: 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Codification<br> -Topic 235<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.4-08(g)(1)(ii))<br> -URI https://asc.fasb.org/extlink&amp;oid=120395691&amp;loc=d3e23780-122690<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(i))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 12: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(i))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 13: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(4)(iii)(A))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 14: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 825<br> -SubTopic 10<br> -Section 50<br> -Paragraph 28<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=123596393&amp;loc=d3e14064-108612<br><br>Reference 15: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1A<br> -Subparagraph (SX 210.13-01(a)(5))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442526-122756<br><br>Reference 16: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iv))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 17: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(5))<br> -URI https://asc.fasb.org/extlink&amp;oid=126975872&amp;loc=SL124442552-122756<br><br>Reference 18: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.1,2)<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br><br>Reference 19: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_GrossProfit</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OperatingIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The net result for the period of deducting operating expenses from operating revenues.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 31<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8924-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (c)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OperatingIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ResearchAndDevelopmentExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 912<br> -SubTopic 730<br> -Section 25<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6472174&amp;loc=d3e58812-109433<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 985<br> -SubTopic 20<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6501960&amp;loc=d3e128462-111756<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 730<br> -SubTopic 10<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=6420194&amp;loc=d3e21568-108373<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ResearchAndDevelopmentExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 40<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9031-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 41<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9038-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130543-203045<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 42<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9054-108599<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130545-203045<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 924<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 11.L)<br> -URI https://asc.fasb.org/extlink&amp;oid=6472922&amp;loc=d3e499488-122856<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_SellingGeneralAndAdministrativeExpense">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example, credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 220<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.5-03.4)<br> -URI https://asc.fasb.org/extlink&amp;oid=126953954&amp;loc=SL114868664-224227<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_SellingGeneralAndAdministrativeExpense</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
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<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
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<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=ftek_AirPollutionControlMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=ftek_FUELCHEMMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=ftek_FUELCHEMMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
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<tr>
<td><strong> Period Type:</strong></td>
<td></td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050301528416">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 12 - Business Segment and Geographic Financial Data - Geographic Segment Financial Data (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
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<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">$ 26,941<span></span>
</td>
<td class="nump">$ 24,261<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NoncurrentAssets', window );">Assets</a></td>
<td class="nump">50,124<span></span>
</td>
<td class="nump">49,974<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=country_US', window );">UNITED STATES</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">20,311<span></span>
</td>
<td class="nump">19,515<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NoncurrentAssets', window );">Assets</a></td>
<td class="nump">47,007<span></span>
</td>
<td class="nump">46,271<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=us-gaap_NonUsMember', window );">Non-US [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">6,630<span></span>
</td>
<td class="nump">4,746<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NoncurrentAssets', window );">Assets</a></td>
<td class="nump">$ 3,117<span></span>
</td>
<td class="nump">$ 3,703<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NoncurrentAssets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 41<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9038-108599<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NoncurrentAssets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 40<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9031-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 41<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9038-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130543-203045<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 42<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9054-108599<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130545-203045<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 924<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 11.L)<br> -URI https://asc.fasb.org/extlink&amp;oid=6472922&amp;loc=d3e499488-122856<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=country_US">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=country_US</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=us-gaap_NonUsMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=us-gaap_NonUsMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
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<DOCUMENT>
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<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050297103152">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 13 - Restructuring Activities (Details Textual) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RestructuringCharges', window );">Restructuring Charges, Total</a></td>
<td class="nump">$ 0<span></span>
</td>
<td class="nump">$ 0<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=country_CN', window );">CHINA | Backlog [Member]</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1', window );">Restructuring and Related Cost, Expected Cost Remaining</a></td>
<td class="nump">$ 5<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of expected cost remaining for the specified restructuring cost.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RestructuringAndRelatedCostExpectedCostRemaining1</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RestructuringCharges">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 420<br> -SubTopic 10<br> -Section 45<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=109237686&amp;loc=d3e17752-110868<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 420<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 5.P.3)<br> -URI https://asc.fasb.org/extlink&amp;oid=115931487&amp;loc=d3e140864-122747<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 230<br> -SubTopic 10<br> -Section 45<br> -Paragraph 28<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126954810&amp;loc=d3e3602-108585<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 420<br> -SubTopic 10<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SAB Topic 5.P.4(b)(1))<br> -URI https://asc.fasb.org/extlink&amp;oid=115931487&amp;loc=d3e140904-122747<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RestructuringCharges</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=country_CN">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=country_CN</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_RestructuringCostAndReserveAxis=ftek_BacklogMember">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RestructuringCostAndReserveAxis=ftek_BacklogMember</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
</tr>
</table></div>
</div></td></tr>
</table>
</div>
</body>
</html>
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<TEXT>
<html>
<head>
<title></title>
<link rel="stylesheet" type="text/css" href="include/report.css">
<script type="text/javascript" src="Show.js">/* Do Not Remove This Comment */</script><script type="text/javascript">
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<body>
<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050289251616">
<tr>
<th class="tl" colspan="1" rowspan="2"><div style="width: 200px;"><strong>Note 13 - Restructuring Activities - Charges and Net Assets (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th" colspan="2">12 Months Ended</th>
</tr>
<tr>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">$ 26,941<span></span>
</td>
<td class="nump">$ 24,261<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="num">(1,442)<span></span>
</td>
<td class="nump">54<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Assets', window );">Total assets</a></td>
<td class="nump">50,124<span></span>
</td>
<td class="nump">49,974<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Liabilities', window );">Total liabilities</a></td>
<td class="nump">5,283<span></span>
</td>
<td class="nump">3,774<span></span>
</td>
</tr>
<tr class="rh">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_srt_StatementGeographicalAxis=country_CN', window );">CHINA</a></td>
<td class="text">&#160;<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax', window );">Revenues</a></td>
<td class="nump">3<span></span>
</td>
<td class="nump">22<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_NetIncomeLoss', window );">Net loss</a></td>
<td class="num">(209)<span></span>
</td>
<td class="num">(114)<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Assets', window );">Total assets</a></td>
<td class="nump">929<span></span>
</td>
<td class="nump">1,235<span></span>
</td>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_Liabilities', window );">Total liabilities</a></td>
<td class="nump">79<span></span>
</td>
<td class="nump">92<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_AssetsNet', window );">Total net assets</a></td>
<td class="nump">$ 850<span></span>
</td>
<td class="nump">$ 1,143<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Assets">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 210<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-03(11))<br> -URI https://asc.fasb.org/extlink&amp;oid=126897435&amp;loc=d3e534808-122878<br><br>Reference 2: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 55<br> -Paragraph 10<br> -URI https://asc.fasb.org/extlink&amp;oid=84165509&amp;loc=d3e56426-112766<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 470<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1B<br> -Subparagraph (SX 210.13-02(a)(4)(iii)(A))<br> -URI 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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Assets</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_AssetsNet">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of net assets (liabilities).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 205<br> -SubTopic 30<br> -Section 50<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=77885760&amp;loc=SL35686385-199418<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 946<br> -SubTopic 205<br> -Section 45<br> -Paragraph 3<br> -URI https://asc.fasb.org/extlink&amp;oid=118262037&amp;loc=d3e9915-115836<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 946<br> -SubTopic 220<br> -Section S99<br> -Paragraph 3<br> -Subparagraph (SX 210.6-09(7))<br> -URI https://asc.fasb.org/extlink&amp;oid=120401555&amp;loc=SL114874367-224272<br><br>Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 946<br> -SubTopic 210<br> -Section S99<br> -Paragraph 2<br> -Subparagraph (SX 210.6-05(4))<br> -URI https://asc.fasb.org/extlink&amp;oid=120401414&amp;loc=d3e604008-122996<br><br>Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 946<br> -SubTopic 220<br> -Section S99<br> -Paragraph 3<br> -Subparagraph (SX 210.6-09(6))<br> -URI https://asc.fasb.org/extlink&amp;oid=120401555&amp;loc=SL114874367-224272<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_AssetsNet</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>debit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_Liabilities">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.19-26)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 852<br> -SubTopic 10<br> -Section 50<br> -Paragraph 7<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=124433192&amp;loc=SL2890621-112765<br><br>Reference 3: http://www.xbrl.org/2003/role/exampleRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (d)<br> -URI 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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_Liabilities</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_NetIncomeLoss">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 942<br> -SubTopic 220<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.9-04(22))<br> -URI https://asc.fasb.org/extlink&amp;oid=120399700&amp;loc=SL114874048-224260<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (f)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 250<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -URI 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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_NetIncomeLoss</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
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<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 30<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8906-108599<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 40<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9031-108599<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 41<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9038-108599<br><br>Reference 4: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 5: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 32<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8933-108599<br><br>Reference 6: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 4<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130543-203045<br><br>Reference 7: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (b)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 8: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 22<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e8736-108599<br><br>Reference 9: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 280<br> -SubTopic 10<br> -Section 50<br> -Paragraph 42<br> -URI https://asc.fasb.org/extlink&amp;oid=126901519&amp;loc=d3e9054-108599<br><br>Reference 10: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130545-203045<br><br>Reference 11: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 924<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SAB Topic 11.L)<br> -URI https://asc.fasb.org/extlink&amp;oid=6472922&amp;loc=d3e499488-122856<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>duration</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_srt_StatementGeographicalAxis=country_CN">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Details</a><div><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">srt_StatementGeographicalAxis=country_CN</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>na</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td></td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td></td>
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<span style="display: none;">v3.22.4</span><table class="report" border="0" cellspacing="2" id="idm140050298640096">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Note 14 - Accrued Liabilities - Components of Other Accrued Liabilities (Details) - USD ($)<br> $ in Thousands</strong></div></th>
<th class="th"><div>Dec. 31, 2022</div></th>
<th class="th"><div>Dec. 31, 2021</div></th>
<th class="th"><div>Dec. 31, 2020</div></th>
</tr>
<tr class="re">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ContractWithCustomerLiabilityCurrent', window );">Contract liabilities (Note 2)</a></td>
<td class="nump">$ 372<span></span>
</td>
<td class="nump">$ 390<span></span>
</td>
<td class="nump">$ 850<span></span>
</td>
</tr>
<tr class="ro">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_ProductWarrantyAccrualClassifiedCurrent', window );">Warranty reserve (Note 9)</a></td>
<td class="nump">159<span></span>
</td>
<td class="nump">159<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="re">
<td class="pl custom" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_ftek_OtherAccruedLiabilitiesMiscellaneousCurrent', window );">Other accrued liabilities</a></td>
<td class="nump">295<span></span>
</td>
<td class="nump">312<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
<tr class="rou">
<td class="pl" style="border-bottom: 0px;" valign="top"><a class="a" href="javascript:void(0);" onclick="Show.showAR( this, 'defref_us-gaap_OtherAccruedLiabilitiesCurrent', window );">Total other accrued liabilities</a></td>
<td class="nump">$ 826<span></span>
</td>
<td class="nump">$ 861<span></span>
</td>
<td class="text">&#160;<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_ftek_OtherAccruedLiabilitiesMiscellaneousCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of miscellaneous expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>No definition available.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">ftek_OtherAccruedLiabilitiesMiscellaneousCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>ftek_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_ContractWithCustomerLiabilityCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 45<br> -Paragraph 1<br> -URI https://asc.fasb.org/extlink&amp;oid=126919976&amp;loc=SL49130531-203044<br><br>Reference 2: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 45<br> -Paragraph 2<br> -URI https://asc.fasb.org/extlink&amp;oid=126919976&amp;loc=SL49130532-203044<br><br>Reference 3: http://www.xbrl.org/2003/role/disclosureRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 606<br> -SubTopic 10<br> -Section 50<br> -Paragraph 8<br> -Subparagraph (a)<br> -URI https://asc.fasb.org/extlink&amp;oid=126920106&amp;loc=SL49130549-203045<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_ContractWithCustomerLiabilityCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
<td>us-gaap_</td>
</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
<td>credit</td>
</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
</div></td></tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_us-gaap_OtherAccruedLiabilitiesCurrent">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
<tr>
<td><strong> Name:</strong></td>
<td style="white-space:nowrap;">us-gaap_OtherAccruedLiabilitiesCurrent</td>
</tr>
<tr>
<td style="padding-right: 4px;white-space:nowrap;"><strong> Namespace Prefix:</strong></td>
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</tr>
<tr>
<td><strong> Data Type:</strong></td>
<td>xbrli:monetaryItemType</td>
</tr>
<tr>
<td><strong> Balance Type:</strong></td>
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</tr>
<tr>
<td><strong> Period Type:</strong></td>
<td>instant</td>
</tr>
</table></div>
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<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. For classified balance sheets, represents the current portion of the liabilities (due within one year or within the normal operating cycle if longer).</p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ References</a><div style="display: none;"><p>Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 460<br> -SubTopic 10<br> -Section 50<br> -Paragraph 7<br> -URI https://asc.fasb.org/extlink&amp;oid=126907703&amp;loc=d3e12524-110249<br><br>Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 210<br> -SubTopic 10<br> -Section S99<br> -Paragraph 1<br> -Subparagraph (SX 210.5-02.20)<br> -URI https://asc.fasb.org/extlink&amp;oid=120391452&amp;loc=d3e13212-122682<br><br>Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef<br> -Publisher FASB<br> -Name Accounting Standards Codification<br> -Topic 460<br> -SubTopic 10<br> -Section 25<br> -Paragraph 5<br> -URI https://asc.fasb.org/extlink&amp;oid=126907644&amp;loc=d3e11281-110244<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ Details</a><div style="display: none;"><table border="0" cellpadding="0" cellspacing="0">
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Basis of Presentation&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The consolidated financial statements include the accounts of Fuel Tech and its wholly owned subsidiaries.&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (GAAP). The books and records of subsidiaries located in foreign countries are maintained according to generally accepted accounting principles in those countries. Upon consolidation, the Company evaluates the differences in accounting principles and determines whether adjustments are necessary to convert the foreign financial statements to the accounting principles upon which the consolidated financial statements are based. All intercompany transactions have been eliminated.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;On the Consolidated Statements of Operations of this Annual Report on Form &lt;em style="font: inherit;"&gt;10&lt;/em&gt;-K, the presentation of interest income has been updated for &lt;em style="font: inherit;"&gt;2021&lt;/em&gt; to conform to the current year's presentation. The amount for interest income was previously presented with interest expense under the caption Interest expense, net on the Consolidated Statements of Operations.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;COVID-&lt;em style="font: inherit;"&gt;19&lt;/em&gt; Pandemic and Geopolitical Events&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The effects of the coronavirus (COVID-&lt;em style="font: inherit;"&gt;19&lt;/em&gt;) global pandemic have presented&#160;significant risks to the Company that have had direct and indirect impacts on our results of operations&#160;during the &lt;em style="font: inherit;"&gt;twelve&lt;/em&gt; months ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&#160;Although the impact of the pandemic is difficult to isolate and quantify, the Company has experienced, and &lt;em style="font: inherit;"&gt; may &lt;/em&gt;continue to experience, supply chain issues, travel restrictions, and reductions in demand for certain of products&#160;due to the delay or abandonment of ongoing or anticipated projects&#160;due to our customers', suppliers' and other &lt;em style="font: inherit;"&gt;third&lt;/em&gt; parties' financial distress or concern regarding the volatility of global markets.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Geopolitical events and global economic sanctions resulting from the ongoing conflict between Russia and Ukraine &lt;em style="font: inherit;"&gt; may &lt;/em&gt;impact new or existing projects and the prices and availability of raw materials, energy and other materials. These events &lt;em style="font: inherit;"&gt; may &lt;/em&gt;also impact energy and regulatory policy nationally or regionally for the impacted regions. In addition, we have experienced and are experiencing varying levels of inflation resulting in part from increased shipping and transportation costs, raw material costs, and labor costs.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Management cannot&#160;predict the full impact of the COVID-&lt;em style="font: inherit;"&gt;19&lt;/em&gt; pandemic and geopolitical events on the Company's sales and marketing channels and supply chains, and, as a result, the ultimate extent of the effects on the Company are highly uncertain and will depend on future developments. Such effects could exist for an extended period of time. The Company continues to monitor the potential impacts on the business.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;



   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Private Placement Offering&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;On &lt;em style="font: inherit;"&gt; February 11, 2021, &lt;/em&gt;Fuel Tech entered into a securities purchase agreement (the &#x201c;Purchase Agreement&#x201d;) with certain institutional investors pursuant to which the Company agreed to issue and sell, in a private placement (the &#x201c;Private Placement&#x201d;), (i) 5,000,000 shares (the &#x201c;Shares&#x201d;) of common stock, (ii) and 2,500,000 warrants (the &#x201c;Warrants&#x201d;) exercisable for a total of 2,500,000 shares of common stock (the &#x201c;Warrant Shares&#x201d;) with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were $25,812, before deducting placement agent fees and offering expenses of $1,783. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the &lt;span style="-sec-ix-hidden:c94230277"&gt;five&lt;/span&gt;&#160;and &lt;em style="font: inherit;"&gt;one&lt;/em&gt;-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale. In addition, the Company issued to the placement agent Warrants to purchase up to 350,000 shares of common stock.&#160; The Placement Agent Warrants are exercisable at an exercise price of $6.45 per share of common stock and expire on the &lt;span style="-sec-ix-hidden:c94230285"&gt;five&lt;/span&gt;&#160;and &lt;em style="font: inherit;"&gt;one&lt;/em&gt;-half year anniversary of the effective date of the registration statement registering the Shares and Warrant Shares for resale.&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Liquidity&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We&#160;have experienced&#160;net losses in recent years.&#160;We continue to monitor our liquidity needs and have taken measures to reduce expenses and restructure operations, which we feel are necessary to ensure we maintain sufficient working capital and liquidity to operate the business and invest in our future. As a result, we have evaluated our ongoing business needs, and considered the cash requirements of our APC&#160;and FUEL CHEM businesses. This evaluation included consideration of the following: a) customer and revenue trends in our APC and FUEL CHEM business segments, b) current operating structure and expenditure levels, c) current availability of working capital, and d) support for our research and development initiatives.&#160;We believe our current cash position and net cash flows expected to be generated from operations are adequate to fund planned operations of the Company for the next &lt;em style="font: inherit;"&gt;12&lt;/em&gt; months.&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Use of Estimates&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The preparation of the financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The Company uses estimates in accounting for, among other items, revenue recognition, allowance for doubtful accounts, income tax provisions, excess and obsolete inventory reserve, impairment of long-lived assets, and warranty expenses. Actual results could differ from those estimates.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Fair Value Measurements&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The carrying values of cash and cash equivalents, accounts receivable, and accounts payable are reasonable estimates of their fair value due to their short-term nature.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We apply authoritative accounting guidance for fair value measurements of financial and non-financial assets and liabilities. This guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis and clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the standard establishes a &lt;em style="font: inherit;"&gt;three&lt;/em&gt;-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
    &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:64pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;Level &lt;em style="font: inherit;"&gt;1&lt;/em&gt; &#x2013; Observable inputs to the valuation methodology such as quoted prices in active markets for identical assets or liabilities&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
    &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:64pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;Level &lt;em style="font: inherit;"&gt;2&lt;/em&gt; &#x2013; Inputs to the valuation methodology including quoted prices for similar assets or liabilities in active markets, quoted prices for identical assets or liabilities in inactive markets, inputs other than quoted prices that are observable for the asset or liability, and inputs that are derived principally from or corroborated by observable market data by correlation or other means&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
    &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:64pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;Level &lt;em style="font: inherit;"&gt;3&lt;/em&gt; &#x2013; Significant unobservable inputs in which there is little or &lt;em style="font: inherit;"&gt;no&lt;/em&gt; market data, which require the reporting entity to develop its own estimates and assumptions or those expected to be used by market participants. Generally, these fair value measures are model-based valuation techniques such as discounted cash flows, option pricing models, and other commonly used valuation techniques&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Transfers between levels of the fair value hierarchy are recognized based on the actual date of the event or change in circumstances that caused the transfer. We had &lt;em style="font: inherit;"&gt;no&lt;/em&gt; assets or liabilities that were valued using level &lt;em style="font: inherit;"&gt;2&lt;/em&gt; or level &lt;em style="font: inherit;"&gt;3&lt;/em&gt; inputs and therefore there were &lt;em style="font: inherit;"&gt;no&lt;/em&gt; transfers between levels of the fair value hierarchy during the periods ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Cash, cash equivalents and restricted cash&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We consider all highly liquid debt investments with original maturities from the date of purchase of &lt;em style="font: inherit;"&gt;three&lt;/em&gt; months or less as cash equivalents. Cash equivalents include investments in money market funds. At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, we had cash on hand of approximately $675&#160;at our Beijing, China subsidiary that is subject to certain local regulations that &lt;em style="font: inherit;"&gt; may &lt;/em&gt;limit the immediate availability of these funds outside of China. Cash on hand at our Italy subsidiary totaled approximately $300&#160;at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;. Cash on hand at our Chilean subsidiary totaled approximately $225&#160;at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Restricted cash as of &lt;em style="font: inherit;"&gt; December 31, 2021 &lt;/em&gt;represents funds that are restricted to satisfy any amount borrowed against the Company's Cash Collateral Security agreement with BMO Harris Bank N.A (Cash Collateral Security agreement). In &lt;em style="font: inherit;"&gt; June 2022, &lt;/em&gt;the Company replaced the former Cash Collateral Security agreement with an Investment Collateral Security agreement with BMO Harris Bank N.A (Investment Collateral Security agreement) where&#160;existing standby letters of credit are collateralized by amounts held in the Company's investment funds (see Note &lt;em style="font: inherit;"&gt;11&lt;/em&gt;).&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheet that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows:&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%; padding: 0; margin: 0"&gt; &lt;p style="margin-top: 0pt; margin-bottom: 0pt"&gt;Cash&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;12,560&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;35,893&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Cash equivalents&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;10,768&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Restricted cash included in current assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;891&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Restricted cash included in long-term assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;270&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;23,328&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;37,054&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="margin: 0pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/p&gt;

   &lt;div&gt;
    &lt;p style="margin: 0pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"/&gt;
    &lt;p style="margin: 0pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;b style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"/&gt;&lt;/p&gt;
   &lt;/div&gt;

    &lt;div&gt;
     &lt;p style="margin: 0pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;b style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;Investments&lt;/b&gt;&lt;/p&gt;
    &lt;/div&gt; &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;In &lt;em style="font: inherit;"&gt; June 2022, &lt;/em&gt;the Board of Directors approved a plan to invest up to $10,000&#160;of excess capital&#160;in debt securities, or held in money market funds until such investments can be made, with BMO Harris Bank N.A (BMO Harris). In &lt;em style="font: inherit;"&gt; December 2022, &lt;/em&gt;the Board of Directors approved an additional transfer of $10,000&#160;of excess capital into the investment account. The funds deposited in &lt;em style="font: inherit;"&gt; December 2022 &lt;/em&gt;have &lt;em style="font: inherit;"&gt;not&lt;/em&gt; been invested in debt securities as of &lt;em style="font: inherit;"&gt; December 31, 2022 &lt;/em&gt;and are included in cash equivalents. A portion of the funds invested are restricted as collateral under the Investment Collateral Security agreement (see Note &lt;em style="font: inherit;"&gt;11&lt;/em&gt;).&#160;At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, the amount of funds collateralized under the Investment Collateral Security agreeme&lt;span style="background-color:#ffffff;"&gt;nt&#160;is &lt;/span&gt;$1,034&lt;span style="background-color:#ffffff;"&gt;&#160;relating to existing standby letters of credit with varying maturity dates and expire &lt;em style="font: inherit;"&gt;no&lt;/em&gt; later than &lt;em style="font: inherit;"&gt; December 31, 2024.&lt;/em&gt;&lt;/span&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;Our investments in debt securities consist of United&#160;States (US) Treasury securities, including Notes, Bonds, and Bills, and US Government Agency securities, which&#160;are designated as held-to-maturity (HTM) and stated at amortized cost. The Company has the positive intent and ability to hold these investments to maturity and does&#160;&lt;em style="font: inherit;"&gt;not&lt;/em&gt; expect&#160;to sell any debt securities before maturity to settle an obligation under the Investment Collateral Security agreement. The maturities of our HTM investments range from &lt;span style="-sec-ix-hidden:c94230314"&gt;three&lt;/span&gt; to &lt;span style="-sec-ix-hidden:c94230315"&gt;thirty-six&lt;/span&gt; months. HTM debt investments with original maturities of approximately &lt;em style="font: inherit;"&gt;three&lt;/em&gt; months or less from the date of purchase are classified within cash and cash equivalents. HTM debt investments with original maturities at the date of purchase greater than approximately &lt;em style="font: inherit;"&gt;three&lt;/em&gt; months and remaining maturities of less than &lt;em style="font: inherit;"&gt;one&lt;/em&gt; year are classified as short-term investments. HTM debt investments with remaining maturities beyond &lt;em style="font: inherit;"&gt;one&lt;/em&gt; year are classified as long-term investments. Interest income, including amortization of premium and accretion of discount, are included on the Consolidated Statements of Operations in Interest income under the effective yield method. Accrued interest is included in Prepaid expenses and other current assets on the Consolidated Balance Sheets.&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;The following table provides the amortized cost, gross unrealized gains and losses, and fair value of our HTM debt securities at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;:&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 85%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Held-to-maturity debt securities:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Amortized cost&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;9,341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Gross unrecognized gains&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Gross unrecognized losses&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(168&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Fair value&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;9,173&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;Our investments in debt securities consist of United States (US) Treasury securities, including Notes, Bonds, and Bills, and US Government Agency securities. Due to the creditworthiness of the entities issuing these securities, there is &lt;em style="font: inherit;"&gt;no&lt;/em&gt; impairment recorded related to the unrealized losses.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;The following table provides the amortized cost and fair value of debt securities by maturities at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;:&lt;/p&gt; &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Amortized Cost&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Fair Value&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Within one year&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;2,981&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;2,957&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;After one year through two years&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;4,919&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;4,807&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;After two years through three years&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1,441&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1,409&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;9,341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;9,173&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Foreign Currency Risk Management&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Our earnings and cash flows are subject to fluctuations due to changes in foreign currency exchange rates. We do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; enter into foreign currency forward contracts or into foreign currency option contracts to manage this risk due to the nature of the transactions involved.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Accounts Receivable&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Accounts receivable consist of amounts due to us in the normal course of our business, are &lt;em style="font: inherit;"&gt;not&lt;/em&gt; collateralized, and normally do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; bear interest. Accounts receivable includes contract assets, billings occurring subsequent to revenue recognition under Accounting Standards Codification (ASC) &lt;em style="font: inherit;"&gt;606&lt;/em&gt; &lt;i&gt;Revenue from Contracts with Customers&lt;/i&gt;. At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, unbilled receivables were approximately $3,082 and $1,277, respectively. Refer to Note &lt;em style="font: inherit;"&gt;2&lt;/em&gt; for further detail.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;b/&gt;&lt;/p&gt;


   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Allowance for Doubtful Accounts&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The allowance for doubtful accounts is our management's best estimate of the amount of credit losses in accounts receivable. In order to control and monitor the credit risk associated with our customer base, we review the credit worthiness of customers on a recurring basis. Factors influencing the level of scrutiny include the level of business the customer has with Fuel Tech, the customer&#x2019;s payment history, and the customer&#x2019;s financial stability. At the end of each reporting period, the allowance for doubtful accounts balance is reviewed relative to management&#x2019;s collectability assessment and is adjusted if deemed necessary.&#160; Bad debt write-offs are made when management believes it is probable a receivable will &lt;em style="font: inherit;"&gt;not&lt;/em&gt; be recovered. The table below sets forth the components of the Allowance for Doubtful Accounts for the years ended &lt;em style="font: inherit;"&gt; December&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;31.&lt;/em&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Year&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Balance at January 1&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Provision charged to expense&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Write-offs / Recoveries&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Balance at December 31&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;2021&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;835&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;227&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;(839&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;223&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2022&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;223&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(19&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(94&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;110&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Prepaid expenses and other current assets&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Prepaid expenses and other current assets include&#160;Chinese banker acceptances of $0&#160;and $55&#160;as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, respectively. These are short-term commitments of typically &lt;em style="font: inherit;"&gt;three&lt;/em&gt; to &lt;em style="font: inherit;"&gt;six&lt;/em&gt; months&#160;for future payments and can be redeemed at a discount or applied to future vendor payments.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Inventories&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Inventories consist primarily of equipment constructed for resale&#160;and spare parts and are stated at the lower of cost or net realizable value, using the weighted-average cost method. At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, inventory included equipment constructed for resale of$207&lt;span style="background-color:#ffffff;"&gt;&#160;and &lt;/span&gt;$227&lt;span style="background-color:#ffffff;"&gt;, respectively, and spare parts, net of reserves of &lt;/span&gt;$185&lt;span style="background-color:#ffffff;"&gt;&#160;and &lt;/span&gt;$121&lt;span style="background-color:#ffffff;"&gt;, respectively.&lt;/span&gt; Usage is recorded in cost of sales in the period that parts were issued to a project or used to service equipment.&#160;Equipment constructed for resale that is&#160;in process&#160;is recorded in Other assets. In process equipment for inventory recorded as other assets was $634 and $627&#160;as of &lt;em style="font: inherit;"&gt; December 31, 2022 &lt;/em&gt;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt; respectively.&#160;&#160;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Inventories are periodically evaluated to identify obsolete or otherwise impaired parts and are written off when management determines usage is &lt;em style="font: inherit;"&gt;not&lt;/em&gt; probable. The Company estimates the balance of excess and obsolete inventory by analyzing inventory by age using last used and original purchase date and existing sales pipeline for which the inventory could be used.&#160;The table below sets forth the components of the Excess and Obsolete Inventory Reserve for the years ended &lt;em style="font: inherit;"&gt; December 31.&lt;/em&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Year&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Balance at January 1&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Provision charged to expense&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Write-offs / Recoveries&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Balance at December 31&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2021&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;907&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;20&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;927&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2022&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;927&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;927&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Foreign Currency Translation and Transactions&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Assets and liabilities of consolidated foreign subsidiaries are translated into U.S. dollars at exchange rates in effect at year end. Revenues and expenses are translated at average exchange rates prevailing during the year. Gains or losses on foreign currency transactions and the related tax effects are reflected in net income. The resulting translation adjustments are included in stockholders&#x2019; equity as part of accumulated other comprehensive loss.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Accumulated Other Comprehensive Loss&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;b&gt;Foreign currency translation&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Balance at beginning of period&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(1,604&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(1,370&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Other comprehensive loss:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Foreign currency translation adjustments (1)&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(124&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(234&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Balance at end of period&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1,728&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1,604&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;b&gt;Total accumulated other comprehensive loss&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,728&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,604&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
    &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:36pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;(&lt;em style="font: inherit;"&gt;1&lt;/em&gt;)&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;In all periods presented, there were &lt;em style="font: inherit;"&gt;no&lt;/em&gt; tax impacts related to functional currency translation adjustments.&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"/&gt;


   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Research and Development&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Research and development costs are expensed as incurred. Research and development projects funded by customer contracts are reported as part of cost of goods sold. Internally funded research and development expenses are reported as operating expenses.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Product/System Warranty&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We typically warrant our air pollution control products and systems against defects in design, materials and workmanship for &lt;span style="-sec-ix-hidden:c94230348"&gt;one&lt;/span&gt; to &lt;span style="-sec-ix-hidden:c94230349"&gt;two&lt;/span&gt; years. A provision for estimated future costs relating to warranty expense is recorded when the products/systems become commercially operational.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Goodwill&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;Goodwill is evaluated for impairment at the reporting unit level, which is defined as an operating segment or &lt;em style="font: inherit;"&gt;one&lt;/em&gt; level below an operating segment. Goodwill of our reporting units is assigned upon acquisition after considering the nature of the net assets giving rise to the goodwill and how each reporting unit would enjoy the benefits and synergies of the net assets acquired. We have &lt;span style="-sec-ix-hidden:c94230351"&gt;two&lt;/span&gt; reporting units for goodwill evaluation purposes: the FUEL CHEM technology segment and the APC technology reporting unit. There is &lt;em style="font: inherit;"&gt;no&lt;/em&gt; goodwill associated with our APC&#160;technology reporting unit. The entire goodwill balance of $2,116&#160;was allocated to the FUEL CHEM technology reporting unit&#160;as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Goodwill is tested for impairment at least annually as of the &lt;em style="font: inherit;"&gt;first&lt;/em&gt; day of our &lt;em style="font: inherit;"&gt;fourth&lt;/em&gt; quarter, or more frequently if events or changes in circumstances indicate that the carrying value &lt;em style="font: inherit;"&gt; may &lt;/em&gt;&lt;em style="font: inherit;"&gt;not&lt;/em&gt; be recoverable. Our evaluation of goodwill impairment involves &lt;em style="font: inherit;"&gt;first&lt;/em&gt; assessing qualitative factors to determine whether it is more likely than &lt;em style="font: inherit;"&gt;not&lt;/em&gt; that the fair value of a reporting unit is less than its carrying amount. We &lt;em style="font: inherit;"&gt; may &lt;/em&gt;bypass this qualitative assessment, or determine that based on our qualitative assessment considering the totality of events and circumstances including macroeconomic factors, industry and market considerations, current and projected financial performance, a sustained decrease in our share price, or other factors, that additional impairment analysis is necessary. This additional analysis involves comparing the current fair value of our reporting units to their carrying values. We use a discounted cash flow (DCF) model to determine the current fair value of our FUEL CHEM&#160;reporting unit. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, costs to produce and working capital changes. Management considers historical experience and all available information at the time the fair values of its reporting units are estimated. However, actual fair values that could be realized in an actual transaction &lt;em style="font: inherit;"&gt; may &lt;/em&gt;differ from those used to evaluate the impairment of goodwill. Fuel Tech performed its annual goodwill impairment analysis as of &lt;em style="font: inherit;"&gt; October 1, &lt;/em&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&#160;and determined that &lt;em style="font: inherit;"&gt;no&lt;/em&gt; impairment of goodwill existed. The Company did &lt;span style="-sec-ix-hidden:c94230363"&gt;&lt;span style="-sec-ix-hidden:c94230364"&gt;not&lt;/span&gt;&lt;/span&gt; recognize a charge for goodwill impairment for the periods ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Other Intangible Assets&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Management reviews other finite-lived intangible assets, patent assets, trade names,&#160;and lease assets for impairment when events or changes in circumstances indicate the carrying amount of an asset or asset group &lt;em style="font: inherit;"&gt; may &lt;/em&gt;&lt;em style="font: inherit;"&gt;not&lt;/em&gt; be recoverable. In the event that impairment indicators exist, a further analysis is performed and if the sum of the expected undiscounted future cash flows resulting from the use of the asset or asset group is less than the carrying amount of the asset or asset group, an impairment loss equal to the excess of the asset or asset group's carrying value over its fair value is recorded. Management considers historical experience and all available information at the time the estimates of future cash flows are made, however, the actual cash values that could be realized &lt;em style="font: inherit;"&gt; may &lt;/em&gt;differ from those that are estimated.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
      &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;During the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, Fuel Tech recorded &lt;em style="font: inherit;"&gt;no&lt;/em&gt; patent or trademark abandonment charges.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Third-party costs related to the development of patents are included within other intangible assets on the consolidated balance sheets. The &lt;em style="font: inherit;"&gt;third&lt;/em&gt;-party costs capitalized as patent costs during the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt; were $37&#160;and $52, respectively. Third-party costs are comprised of legal fees that relate to the review and preparation of patent disclosures and filing fees incurred to present the patents to the required governing body.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Our intellectual property portfolio has been a significant building block for the APC and FUEL CHEM technology segments. The patents are essential to the generation of revenue for our businesses and are essential to protect us from competition in the markets in which we serve. These costs are being amortized on the straight-line method over the period beginning with the patent issuance date and ending on the patent expiration date. Patent maintenance fees are charged to operations as incurred.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Amortization expense from continuing operations for intangible assets was $88&#160;and $157&#160;for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, respectively. The table below shows the amortization period and other intangible asset cost by intangible asset as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, and the accumulated amortization and net intangible asset value in total for all other intangible assets.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="10" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="10" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 30%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Description of Other Intangibles&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Amortization Period (years)&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Gross Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Accumulated Amortization&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Net Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Gross Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Accumulated Amortization&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Net Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Patent assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1 - 20&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;803&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(406&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;397&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;789&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;448&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;803&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(406&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;397&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;789&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;448&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The table below shows the estimated future amortization expense for intangible assets:&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 85%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Year&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Estimated Amortization Expense&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2023&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;60&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2024&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;52&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2025&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;31&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2026&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;31&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2027&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;31&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Thereafter&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;192&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;397&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Property and Equipment&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Property and equipment is stated at historical cost and does &lt;em style="font: inherit;"&gt;not&lt;/em&gt; include capital in process expenditures yet to be capitalized. Provisions for depreciation are computed by the straight-line method, using estimated useful lives that range based on the nature of the asset. Leasehold improvements are depreciated over the shorter of the associated lease term or the estimated useful life of the asset. Depreciation expense&#160;was $352&#160;and $584&#160;for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, respectively. The table below shows the depreciable life and cost by asset class as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, and the accumulated depreciation and net book value in total for all classes of assets.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 55%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Description of Property and Equipment&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Depreciable Life (years)&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Land&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,050&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,050&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Building&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;39&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Building and leasehold improvements&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3 - 39&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,626&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,626&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Field equipment&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3 - 4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,882&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,787&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Computer equipment and software&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2 - 3&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,117&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,099&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Furniture and fixtures&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3 - 10&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,306&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,308&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Vehicles&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;5&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Construction in process&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;29&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total cost&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;22,992&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;22,852&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Less accumulated depreciation&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(18,557&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(18,243&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total net book value&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;4,435&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;4,609&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Property and equipment is reviewed for impairment when events and circumstances indicate that the carrying amount of the assets (or asset group) &lt;em style="font: inherit;"&gt; may &lt;/em&gt;&lt;em style="font: inherit;"&gt;not&lt;/em&gt; be recoverable. If impairment indicators exist, we perform a more detailed analysis and an impairment loss is recognized when estimated future undiscounted cash flows expected to result from the use of the asset (or asset group) and its eventual disposition are less than the carrying amount. This process of analyzing impairment involves examining the operating condition of individual assets (or asset group) and estimating a fair value based upon current condition, relevant market factors and remaining estimated operational life compared to the asset&#x2019;s remaining depreciable life. Quoted market prices and other valuation techniques are used to determine expected cash flows.&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;



   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Revenue Recognition&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;&#160;&lt;/i&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is &lt;em style="font: inherit;"&gt;not&lt;/em&gt; separately identifiable from other promises in the contracts and, therefore, &lt;em style="font: inherit;"&gt;not&lt;/em&gt; distinct. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales, value add, and other taxes we collect concurrent with revenue-producing&#160;activities&#160;are&#160;excluded&#160;from&#160;revenue.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;Air Pollution Control Technology&lt;/i&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Fuel Tech&#x2019;s APC contracts are typically &lt;span style="-sec-ix-hidden:c94230387"&gt;six&lt;/span&gt; to &lt;span style="-sec-ix-hidden:c94230388"&gt;eighteen&lt;/span&gt; months in length. A typical contract will have &lt;em style="font: inherit;"&gt;three&lt;/em&gt; or &lt;em style="font: inherit;"&gt;four&lt;/em&gt; critical operational measurements that, when achieved, serve as the basis for us to invoice the customer via progress billings. At a minimum, these measurements will include the generation of engineering drawings, the shipment of equipment and the completion of a system performance test.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;As part of most of its contractual APC project agreements, Fuel Tech will agree to customer-specific acceptance criteria that relate to the operational performance of the system that is being sold. These criteria are determined based on modeling that is performed by Fuel Tech personnel, which is based on operational inputs that are provided by the customer. The customer will warrant that these operational inputs are accurate as they are specified in the binding contractual agreement. Further, the customer is solely responsible for the accuracy of the operating condition information; typically all performance guarantees and equipment warranties granted by us are voidable if the operating condition information is inaccurate or is &lt;em style="font: inherit;"&gt;not&lt;/em&gt; met.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Since control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation. Fuel Tech uses the cost-to-cost input measure of progress for our contracts since it best depicts the transfer of assets to the customer which occurs as we incur costs on our contracts. Under the cost-to-cost input measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred. Costs to fulfill include all internal and external engineering costs, equipment charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product-line related, as appropriate (e.g. test equipment depreciation and certain insurance expenses).&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;Fuel&#160;Tech&#x2019;s&#160;APC&#160;product&#160;line&#160;also&#160;includes&#160;ancillary&#160;revenue&#160;for&#160;post&#160;contractual&#160;goods&#160;and&#160;services.&#160;Revenue&#160;associated&#160;with&#160;these&#160;activities&#160;are&#160;recognized&#160;at&#160;point&#160;in&#160;time&#160;when delivery&#160;of&#160;goods&#160;or&#160;completion&#160;of&#160;the&#160;service&#160;obligation&#160;is&#160;performed.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Fuel Tech has installed over 1,200 units with APC technology and normally provides performance guarantees to our customers based on the operating conditions for the project. As part of the project implementation process, we perform system start-up and optimization services that effectively serve as a test of actual project performance. We believe that this test, combined with the accuracy of the modeling that is performed, enables revenue to be recognized prior to the receipt of formal customer acceptance.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;FUEL CHEM&lt;/i&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;&#160;&lt;/i&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;Revenues from the sale of chemical products are recognized when control transfers to customer upon shipment or delivery of the product based on the applicable shipping terms. We generally recognize revenue for these arrangements at a point in time based on our evaluation of when the customer obtains control of the promised goods or services.&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;On occasion, Fuel Tech will engineer and sell its chemical pumping equipment.&#160; These projects are similar in nature to the APC projects described above and for those projects where control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation.&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;For projects containing multiple performance obligations, the Company allocates the transaction price based on the estimated standalone selling price. The Company must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. The Company utilizes key assumptions to determine the stand-alone selling price, which &lt;em style="font: inherit;"&gt; may &lt;/em&gt;include other comparable transactions, pricing considered in negotiating the transaction and the estimated costs. Variable consideration is allocated specifically to &lt;em style="font: inherit;"&gt;one&lt;/em&gt; or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated are consistent with the amounts the Company would expect to receive for the satisfaction of each performance obligation.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The consideration allocated to each performance obligation is recognized as revenue when control is transferred for the related goods or services. For performance obligations which consist of licenses and other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The Company receives payments from its customers based on billing schedules established in each contract. Up-front payments and fees are recorded as deferred revenue upon receipt or when due until the Company performs its obligations under these arrangements. Amounts are recorded as accounts receivable when the Company&#x2019;s right to consideration is unconditional.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i/&gt;&lt;/p&gt;



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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Cost of Sales&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Cost of sales includes all internal and external engineering costs, equipment and chemical charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product line-related, as appropriate (e.g., test equipment depreciation and certain insurance expenses). Certain depreciation and amortization expenses related to tangible and intangible assets, respectively, are allocated to cost of sales. We classify shipping and handling costs in cost of sales in the consolidated statements of operations.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Selling, General and Administrative Expenses&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Selling, general and administrative expenses primarily include the following categories except where an allocation to the cost of sales line item is warranted due to the project- or product-line nature of a portion of the expense category: salaries and wages, employee benefits, non-project travel, insurance, legal, rent, accounting and auditing, recruiting, telephony, employee training, Board of Directors&#x2019; fees, auto rental, office supplies, dues and subscriptions, utilities, real estate taxes, commissions and bonuses, marketing materials, postage and business taxes. Departments comprising the selling, general and administrative line item primarily include the functions of executive management, finance and accounting, investor relations, regulatory affairs, marketing, business development, information technology, human resources, sales, legal and general administration.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Income Taxes&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, the provision for income taxes represents income taxes paid or payable (or received or receivable) for the current year plus the change in deferred taxes during the year. Deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid, and result from differences between the financial and tax bases of our assets and liabilities and are adjusted for changes in tax rates and tax laws when enacted. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than &lt;em style="font: inherit;"&gt;not&lt;/em&gt; that a tax benefit will &lt;em style="font: inherit;"&gt;not&lt;/em&gt; be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and our experience with similar operations. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are &lt;em style="font: inherit;"&gt;not&lt;/em&gt; long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which &lt;em style="font: inherit;"&gt;no&lt;/em&gt; valuation allowance is recorded &lt;em style="font: inherit;"&gt; may &lt;/em&gt;&lt;em style="font: inherit;"&gt;not&lt;/em&gt; be realized upon changes in facts and circumstances.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Tax benefits related to uncertain tax positions taken or expected to be taken on a tax return are recorded when such benefits meet a more likely than &lt;em style="font: inherit;"&gt;not&lt;/em&gt; threshold. Otherwise, these tax benefits are recorded when a tax position has been effectively settled, which means that the statute of limitation has expired or the appropriate taxing authority has completed their examination even though the statute of limitations remains open. Interest and penalties related to uncertain tax positions are recognized as part of the provision for income taxes and are accrued beginning in the period that such interest and penalties would be applicable under relevant tax law until such time that the related tax benefits are recognized.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/p&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;Leases&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The Company applies the provisions of ASC&#160;&lt;em style="font: inherit;"&gt;842,&lt;/em&gt; Leases. The Company&#160;determines if an arrangement is a lease at inception by evaluating whether the arrangement conveys the right to use an identified asset and whether the Company obtains substantially all of the economic benefits from and has the ability to direct the use of the asset.&#160;Right-of-use&#160;(ROU)&#160;assets&#160;and&#160;lease&#160;liabilities&#160;are&#160;recognized&#160;at&#160;the&#160;lease&#160;commencement&#160;date&#160;based&#160;on&#160;the&#160;present&#160;value&#160;of&#160;the&#160;future&#160;minimum&#160;lease&#160;payments&#160;over the&#160;lease&#160;term.&#160;Operating&#160;ROU&#160;assets&#160;also&#160;include&#160;the&#160;impact&#160;of&#160;any&#160;lease&#160;incentives. Operating leases are included in right-of-use&#160;operating lease assets, operating lease liabilities - current, and operating lease liabilities - non-current on our Consolidated Balance Sheets.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of our leases do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. Our lease terms &lt;em style="font: inherit;"&gt; may &lt;/em&gt;include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We have lease agreements with lease and non-lease components, and&#160;we elected the practical expedient to &lt;em style="font: inherit;"&gt;not&lt;/em&gt; separate lease and non-lease components for the majority of our leases. For certain equipment leases, such as vehicles, we account for the lease and non-lease components as a single lease component. We also elected the practical expedient for leases with an initial term of &lt;em style="font: inherit;"&gt;12&lt;/em&gt; months or less.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Stock-Based Compensation&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Our stock-based employee compensation plan, referred to as the Fuel Tech, Inc. &lt;em style="font: inherit;"&gt;2014&lt;/em&gt; Long-Term Incentive Plan (Incentive Plan), was adopted in &lt;em style="font: inherit;"&gt; May 2014 &lt;/em&gt;and allows for awards to be granted to participants in the form of non-qualified stock options, incentive stock options, stock appreciation rights, restricted stock, restricted stock units, performance awards, and bonuses or other forms of share-based or non-share-based awards or combinations thereof. Participants in the Incentive Plan &lt;em style="font: inherit;"&gt; may &lt;/em&gt;be our directors, officers, employees, consultants or advisors (except consultants or advisors in capital-raising transactions) as the directors determine are key to the success of our business. There are a maximum of 5,600,676&#160;shares that &lt;em style="font: inherit;"&gt; may &lt;/em&gt;be issued or reserved for awards to participants under the Incentive Plan as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;. Based on the existing issued or reserved awards in Incentive Plan, there are 1,899,250&#160;shares available to be used for future awards to participants in the Incentive Plan as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Defined Contribution Plan&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;span style="background-color:#ffffff;"&gt;We have a retirement savings plan available for all our U.S. employees who have met minimum length-of-service requirements. Our contributions are determined based upon amounts contributed by the employees with additional contributions made at the discretion of the Board of Directors. Costs related to this plan were &lt;/span&gt;$200&lt;span style="background-color:#ffffff;"&gt;&#160;and&#160;&lt;/span&gt;$206&lt;span style="background-color:#ffffff;"&gt;&#160;in &lt;/span&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;&#160;and&#160;&lt;/span&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;, respectively.&lt;/span&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Basic and Diluted Earnings per Common Share&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;span style="background-color:#ffffff;"&gt;Basic earnings per share excludes the antidilutive effects of stock options, restricted stock units (RSUs), warrants, and the &lt;em style="font: inherit;"&gt;nil&lt;/em&gt; coupon non-redeemable convertible unsecured loan notes (see Note &lt;em style="font: inherit;"&gt;6&lt;/em&gt;). Diluted earnings per share includes the dilutive effect of the &lt;em style="font: inherit;"&gt;nil&lt;/em&gt; coupon non-redeemable convertible unsecured loan notes, RSUs, warrants, and unexercised in-the-money stock options, except in periods of net loss where the effect of these instruments is antidilutive. Out-of-the-money stock options and warrants are excluded from diluted earnings per share because they are unlikely to be exercised and would be anti-dilutive if they were exercised. At &lt;/span&gt;&lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;&#160;and &lt;/span&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;, we had weighted-average outstanding equity awards of &lt;/span&gt;763,800&lt;span style="background-color:#ffffff;"&gt;&#160;and &lt;/span&gt;214,500&lt;span style="background-color:#ffffff;"&gt;, respectively, and &lt;/span&gt;2,850,000&lt;span style="background-color:#ffffff;"&gt;&#160;warrants in both periods, which were antidilutive for the purpose of calculation of&#160;the diluted earnings per share. As of &lt;/span&gt;&lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;,&#160;&lt;/span&gt;42,600&lt;span style="background-color:#ffffff;"&gt;&#160;incremental equity awards were antidilutive because of the net loss in the year then ended. These equity awards could potentially dilute basic EPS in future years.&lt;/span&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The table below sets forth the weighted-average shares used at &lt;em style="font: inherit;"&gt; December&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;31&lt;/em&gt; in calculating earnings (loss) per share:&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Basic weighted-average shares&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;30,289,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;29,585,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Conversion of unsecured loan notes&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Unexercised options and unvested restricted stock units&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;109,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Diluted weighted-average shares&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;30,289,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;29,694,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Risk Concentrations&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Financial instruments that potentially subject the Company to a significant concentration of credit risk consist primarily of cash and cash equivalents and accounts receivable. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. However, management believes the Company is &lt;em style="font: inherit;"&gt;not&lt;/em&gt; exposed to significant credit risk due to the financial position of its primary depository institution where a significant portion of its deposits are held.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;For the year ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, &lt;span style="background-color:#ffffff;"&gt;we had three customers which individually represented greater than &lt;em style="font: inherit;"&gt;10%&lt;/em&gt; of revenues. Two customers primarily contributed revenues to the FUEL CHEM technology segment and one contributed revenue&#160;to the APC technology segment. In total these &lt;em style="font: inherit;"&gt;three&lt;/em&gt; customers represented 48% of consolidated revenues. We had &lt;em style="font: inherit;"&gt;no&lt;/em&gt; customer&#160;that accounted for greater than &lt;em style="font: inherit;"&gt;10%&lt;/em&gt; of our current assets as of &lt;/span&gt;&lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;.&lt;/span&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;For the year ended &lt;em style="font: inherit;"&gt; December 31, 2021&lt;/em&gt;, we had four customers which individually represented greater than &lt;em style="font: inherit;"&gt;10%&lt;/em&gt; of revenues. Three customers primarily contributed revenues to the FUEL CHEM technology segment and one contributed revenue&#160;to the APC technology segment. In total these &lt;em style="font: inherit;"&gt;four&lt;/em&gt; customers represented 60% of consolidated revenues. We had &lt;em style="font: inherit;"&gt;no&lt;/em&gt; customer&#160;that accounted for greater than &lt;em style="font: inherit;"&gt;10%&lt;/em&gt; of our current assets as of &lt;em style="font: inherit;"&gt; December 31, 2021&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We control credit risk through requiring milestone payments on long-term contracts, performing ongoing credit evaluations of its customers, and in some cases obtaining security for payment through bank guarantees and letters of credit.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"/&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Treasury Stock&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We use the cost method to account for common stock repurchases. During the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, we withheld 12,497&#160;and&#160;15,162&#160;shares of our common stock, valued at approximately $17&#160;and&#160;$52, respectively, to settle personal tax withholding obligations that arose as a result of restricted stock units that vested. Refer to Note &lt;em style="font: inherit;"&gt;5,&lt;/em&gt; &#x201c;Treasury Stock,&#x201d; for further discussion.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b/&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Recently Issued Accounting Pronouncements&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;In &lt;em style="font: inherit;"&gt; June 2016, &lt;/em&gt;the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) &lt;em style="font: inherit;"&gt;2016&lt;/em&gt;-&lt;em style="font: inherit;"&gt;13,&lt;/em&gt;&#160;Financial Instruments - Credit Losses (Topic &lt;em style="font: inherit;"&gt;326&lt;/em&gt;): Measurement of Credit Losses on Financial Instruments, and in &lt;em style="font: inherit;"&gt; November 2019, &lt;/em&gt;the FASB issued ASU &lt;em style="font: inherit;"&gt;2019&lt;/em&gt;-&lt;em style="font: inherit;"&gt;10,&lt;/em&gt; Financial Instruments - Credit Losses (Topic &lt;em style="font: inherit;"&gt;326&lt;/em&gt;), Derivatives and Hedging (Topic &lt;em style="font: inherit;"&gt;815&lt;/em&gt;), and Leases (Topic &lt;em style="font: inherit;"&gt;842&lt;/em&gt;).&#160;This guidance amends the current accounting guidance and requires the measurement of all expected losses based on historical experience, current conditions and reasonable and supportable forecasts. For trade receivables, loans, and other financial instruments, we will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. The standard will become effective for interim and annual periods beginning on &lt;em style="font: inherit;"&gt; January 1, 2023 &lt;/em&gt;for Fuel Tech. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. The Company is finalizing the impact of adoption, but we do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; believe the adoption of this standard will have a material impact on our financial statements. Beginning on &lt;em style="font: inherit;"&gt; January 1, 2023, &lt;/em&gt;Fuel Tech will use the caption Allowance for Credit Losses and our expected credit loss model to calculate the allowance.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"/&gt;
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    <us-gaap:BasisOfAccountingPolicyPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232735">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Basis of Presentation&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The consolidated financial statements include the accounts of Fuel Tech and its wholly owned subsidiaries.&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the U.S. (GAAP). The books and records of subsidiaries located in foreign countries are maintained according to generally accepted accounting principles in those countries. Upon consolidation, the Company evaluates the differences in accounting principles and determines whether adjustments are necessary to convert the foreign financial statements to the accounting principles upon which the consolidated financial statements are based. All intercompany transactions have been eliminated.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;On the Consolidated Statements of Operations of this Annual Report on Form &lt;em style="font: inherit;"&gt;10&lt;/em&gt;-K, the presentation of interest income has been updated for &lt;em style="font: inherit;"&gt;2021&lt;/em&gt; to conform to the current year's presentation. The amount for interest income was previously presented with interest expense under the caption Interest expense, net on the Consolidated Statements of Operations.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</us-gaap:BasisOfAccountingPolicyPolicyTextBlock>
    <ftek:COVID19PandemicPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232736">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;COVID-&lt;em style="font: inherit;"&gt;19&lt;/em&gt; Pandemic and Geopolitical Events&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The effects of the coronavirus (COVID-&lt;em style="font: inherit;"&gt;19&lt;/em&gt;) global pandemic have presented&#160;significant risks to the Company that have had direct and indirect impacts on our results of operations&#160;during the &lt;em style="font: inherit;"&gt;twelve&lt;/em&gt; months ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&#160;Although the impact of the pandemic is difficult to isolate and quantify, the Company has experienced, and &lt;em style="font: inherit;"&gt; may &lt;/em&gt;continue to experience, supply chain issues, travel restrictions, and reductions in demand for certain of products&#160;due to the delay or abandonment of ongoing or anticipated projects&#160;due to our customers', suppliers' and other &lt;em style="font: inherit;"&gt;third&lt;/em&gt; parties' financial distress or concern regarding the volatility of global markets.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Geopolitical events and global economic sanctions resulting from the ongoing conflict between Russia and Ukraine &lt;em style="font: inherit;"&gt; may &lt;/em&gt;impact new or existing projects and the prices and availability of raw materials, energy and other materials. These events &lt;em style="font: inherit;"&gt; may &lt;/em&gt;also impact energy and regulatory policy nationally or regionally for the impacted regions. In addition, we have experienced and are experiencing varying levels of inflation resulting in part from increased shipping and transportation costs, raw material costs, and labor costs.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Management cannot&#160;predict the full impact of the COVID-&lt;em style="font: inherit;"&gt;19&lt;/em&gt; pandemic and geopolitical events on the Company's sales and marketing channels and supply chains, and, as a result, the ultimate extent of the effects on the Company are highly uncertain and will depend on future developments. Such effects could exist for an extended period of time. The Company continues to monitor the potential impacts on the business.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
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    <ftek:PrivatePlacementOfferingPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232737">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Private Placement Offering&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;On &lt;em style="font: inherit;"&gt; February 11, 2021, &lt;/em&gt;Fuel Tech entered into a securities purchase agreement (the &#x201c;Purchase Agreement&#x201d;) with certain institutional investors pursuant to which the Company agreed to issue and sell, in a private placement (the &#x201c;Private Placement&#x201d;), (i) 5,000,000 shares (the &#x201c;Shares&#x201d;) of common stock, (ii) and 2,500,000 warrants (the &#x201c;Warrants&#x201d;) exercisable for a total of 2,500,000 shares of common stock (the &#x201c;Warrant Shares&#x201d;) with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were $25,812, before deducting placement agent fees and offering expenses of $1,783. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the &lt;span style="-sec-ix-hidden:c94230277"&gt;five&lt;/span&gt;&#160;and &lt;em style="font: inherit;"&gt;one&lt;/em&gt;-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale. In addition, the Company issued to the placement agent Warrants to purchase up to 350,000 shares of common stock.&#160; The Placement Agent Warrants are exercisable at an exercise price of $6.45 per share of common stock and expire on the &lt;span style="-sec-ix-hidden:c94230285"&gt;five&lt;/span&gt;&#160;and &lt;em style="font: inherit;"&gt;one&lt;/em&gt;-half year anniversary of the effective date of the registration statement registering the Shares and Warrant Shares for resale.&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;</ftek:PrivatePlacementOfferingPolicyTextBlock>
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    <ftek:LiquidityPolicyPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232738">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Liquidity&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We&#160;have experienced&#160;net losses in recent years.&#160;We continue to monitor our liquidity needs and have taken measures to reduce expenses and restructure operations, which we feel are necessary to ensure we maintain sufficient working capital and liquidity to operate the business and invest in our future. As a result, we have evaluated our ongoing business needs, and considered the cash requirements of our APC&#160;and FUEL CHEM businesses. This evaluation included consideration of the following: a) customer and revenue trends in our APC and FUEL CHEM business segments, b) current operating structure and expenditure levels, c) current availability of working capital, and d) support for our research and development initiatives.&#160;We believe our current cash position and net cash flows expected to be generated from operations are adequate to fund planned operations of the Company for the next &lt;em style="font: inherit;"&gt;12&lt;/em&gt; months.&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</ftek:LiquidityPolicyPolicyTextBlock>
    <us-gaap:UseOfEstimates contextRef="d_2022-01-01_2022-12-31" id="c94232739">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Use of Estimates&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The preparation of the financial statements in conformity with generally accepted accounting principles requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. The Company uses estimates in accounting for, among other items, revenue recognition, allowance for doubtful accounts, income tax provisions, excess and obsolete inventory reserve, impairment of long-lived assets, and warranty expenses. Actual results could differ from those estimates.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</us-gaap:UseOfEstimates>
    <us-gaap:FairValueMeasurementPolicyPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232740">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Fair Value Measurements&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The carrying values of cash and cash equivalents, accounts receivable, and accounts payable are reasonable estimates of their fair value due to their short-term nature.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We apply authoritative accounting guidance for fair value measurements of financial and non-financial assets and liabilities. This guidance defines fair value, establishes a consistent framework for measuring fair value and expands disclosure for each major asset and liability category measured at fair value on either a recurring or nonrecurring basis and clarifies that fair value is an exit price, representing the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. As a basis for considering such assumptions, the standard establishes a &lt;em style="font: inherit;"&gt;three&lt;/em&gt;-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value as follows:&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
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&lt;/tbody&gt;&lt;/table&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
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&lt;/tbody&gt;&lt;/table&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
    &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:64pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;Level &lt;em style="font: inherit;"&gt;3&lt;/em&gt; &#x2013; Significant unobservable inputs in which there is little or &lt;em style="font: inherit;"&gt;no&lt;/em&gt; market data, which require the reporting entity to develop its own estimates and assumptions or those expected to be used by market participants. Generally, these fair value measures are model-based valuation techniques such as discounted cash flows, option pricing models, and other commonly used valuation techniques&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Transfers between levels of the fair value hierarchy are recognized based on the actual date of the event or change in circumstances that caused the transfer. We had &lt;em style="font: inherit;"&gt;no&lt;/em&gt; assets or liabilities that were valued using level &lt;em style="font: inherit;"&gt;2&lt;/em&gt; or level &lt;em style="font: inherit;"&gt;3&lt;/em&gt; inputs and therefore there were &lt;em style="font: inherit;"&gt;no&lt;/em&gt; transfers between levels of the fair value hierarchy during the periods ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</us-gaap:FairValueMeasurementPolicyPolicyTextBlock>
    <us-gaap:CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy contextRef="d_2022-01-01_2022-12-31" id="c94232741">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Cash, cash equivalents and restricted cash&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We consider all highly liquid debt investments with original maturities from the date of purchase of &lt;em style="font: inherit;"&gt;three&lt;/em&gt; months or less as cash equivalents. Cash equivalents include investments in money market funds. At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, we had cash on hand of approximately $675&#160;at our Beijing, China subsidiary that is subject to certain local regulations that &lt;em style="font: inherit;"&gt; may &lt;/em&gt;limit the immediate availability of these funds outside of China. Cash on hand at our Italy subsidiary totaled approximately $300&#160;at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;. Cash on hand at our Chilean subsidiary totaled approximately $225&#160;at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Restricted cash as of &lt;em style="font: inherit;"&gt; December 31, 2021 &lt;/em&gt;represents funds that are restricted to satisfy any amount borrowed against the Company's Cash Collateral Security agreement with BMO Harris Bank N.A (Cash Collateral Security agreement). In &lt;em style="font: inherit;"&gt; June 2022, &lt;/em&gt;the Company replaced the former Cash Collateral Security agreement with an Investment Collateral Security agreement with BMO Harris Bank N.A (Investment Collateral Security agreement) where&#160;existing standby letters of credit are collateralized by amounts held in the Company's investment funds (see Note &lt;em style="font: inherit;"&gt;11&lt;/em&gt;).&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported within the Consolidated Balance Sheet that sum to the total of the same such amounts shown in the Consolidated Statements of Cash Flows:&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%; padding: 0; margin: 0"&gt; &lt;p style="margin-top: 0pt; margin-bottom: 0pt"&gt;Cash&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;12,560&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;35,893&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Cash equivalents&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;10,768&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Restricted cash included in current assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;891&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Restricted cash included in long-term assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;270&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;23,328&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;37,054&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="margin: 0pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/p&gt;
    </us-gaap:CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy>
    <us-gaap:Cash
      contextRef="i_2022-12-31_StatementGeographicalAxis-CN"
      decimals="-3"
      id="c94230303"
      unitRef="USD">675000</us-gaap:Cash>
    <us-gaap:Cash
      contextRef="i_2022-12-31_StatementGeographicalAxis-IT"
      decimals="-5"
      id="c94230304"
      unitRef="USD">300000</us-gaap:Cash>
    <us-gaap:Cash
      contextRef="i_2022-12-31_StatementGeographicalAxis-CL"
      decimals="-3"
      id="c94230305"
      unitRef="USD">225000</us-gaap:Cash>
    <us-gaap:ScheduleOfCashAndCashEquivalentsTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302377">
     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%; padding: 0; margin: 0"&gt; &lt;p style="margin-top: 0pt; margin-bottom: 0pt"&gt;Cash&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;12,560&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;35,893&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Cash equivalents&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;10,768&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Restricted cash included in current assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;891&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Restricted cash included in long-term assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;270&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total cash, cash equivalents, and restricted cash shown in the Consolidated Statements of Cash Flows&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;23,328&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;37,054&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="margin: 0pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/p&gt;
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    &lt;div&gt;
     &lt;p style="margin: 0pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;b style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;Investments&lt;/b&gt;&lt;/p&gt;
    &lt;/div&gt; &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;In &lt;em style="font: inherit;"&gt; June 2022, &lt;/em&gt;the Board of Directors approved a plan to invest up to $10,000&#160;of excess capital&#160;in debt securities, or held in money market funds until such investments can be made, with BMO Harris Bank N.A (BMO Harris). In &lt;em style="font: inherit;"&gt; December 2022, &lt;/em&gt;the Board of Directors approved an additional transfer of $10,000&#160;of excess capital into the investment account. The funds deposited in &lt;em style="font: inherit;"&gt; December 2022 &lt;/em&gt;have &lt;em style="font: inherit;"&gt;not&lt;/em&gt; been invested in debt securities as of &lt;em style="font: inherit;"&gt; December 31, 2022 &lt;/em&gt;and are included in cash equivalents. A portion of the funds invested are restricted as collateral under the Investment Collateral Security agreement (see Note &lt;em style="font: inherit;"&gt;11&lt;/em&gt;).&#160;At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, the amount of funds collateralized under the Investment Collateral Security agreeme&lt;span style="background-color:#ffffff;"&gt;nt&#160;is &lt;/span&gt;$1,034&lt;span style="background-color:#ffffff;"&gt;&#160;relating to existing standby letters of credit with varying maturity dates and expire &lt;em style="font: inherit;"&gt;no&lt;/em&gt; later than &lt;em style="font: inherit;"&gt; December 31, 2024.&lt;/em&gt;&lt;/span&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;Our investments in debt securities consist of United&#160;States (US) Treasury securities, including Notes, Bonds, and Bills, and US Government Agency securities, which&#160;are designated as held-to-maturity (HTM) and stated at amortized cost. The Company has the positive intent and ability to hold these investments to maturity and does&#160;&lt;em style="font: inherit;"&gt;not&lt;/em&gt; expect&#160;to sell any debt securities before maturity to settle an obligation under the Investment Collateral Security agreement. The maturities of our HTM investments range from &lt;span style="-sec-ix-hidden:c94230314"&gt;three&lt;/span&gt; to &lt;span style="-sec-ix-hidden:c94230315"&gt;thirty-six&lt;/span&gt; months. HTM debt investments with original maturities of approximately &lt;em style="font: inherit;"&gt;three&lt;/em&gt; months or less from the date of purchase are classified within cash and cash equivalents. HTM debt investments with original maturities at the date of purchase greater than approximately &lt;em style="font: inherit;"&gt;three&lt;/em&gt; months and remaining maturities of less than &lt;em style="font: inherit;"&gt;one&lt;/em&gt; year are classified as short-term investments. HTM debt investments with remaining maturities beyond &lt;em style="font: inherit;"&gt;one&lt;/em&gt; year are classified as long-term investments. Interest income, including amortization of premium and accretion of discount, are included on the Consolidated Statements of Operations in Interest income under the effective yield method. Accrued interest is included in Prepaid expenses and other current assets on the Consolidated Balance Sheets.&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;The following table provides the amortized cost, gross unrealized gains and losses, and fair value of our HTM debt securities at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;:&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 85%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Held-to-maturity debt securities:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Amortized cost&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;9,341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Gross unrecognized gains&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Gross unrecognized losses&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(168&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Fair value&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;9,173&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;Our investments in debt securities consist of United States (US) Treasury securities, including Notes, Bonds, and Bills, and US Government Agency securities. Due to the creditworthiness of the entities issuing these securities, there is &lt;em style="font: inherit;"&gt;no&lt;/em&gt; impairment recorded related to the unrealized losses.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;The following table provides the amortized cost and fair value of debt securities by maturities at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;:&lt;/p&gt; &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Amortized Cost&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Fair Value&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Within one year&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;2,981&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;2,957&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;After one year through two years&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;4,919&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;4,807&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;After two years through three years&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1,441&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1,409&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;9,341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;9,173&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;</us-gaap:InvestmentPolicyTextBlock>
    <ftek:InvestmentPlanMaximumAmountApproved
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    <ftek:InvestmentPlanMaximumAdditionalAmountApproved
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    <us-gaap:RestrictedCashAndInvestments
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      unitRef="USD">1034000</us-gaap:RestrictedCashAndInvestments>
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     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 85%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Held-to-maturity debt securities:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Amortized cost&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;9,341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Gross unrecognized gains&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Gross unrecognized losses&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(168&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Fair value&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;9,173&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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    <us-gaap:DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss
      contextRef="i_2022-12-31"
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      unitRef="USD">9341000</us-gaap:DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss>
    <us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain
      contextRef="i_2022-12-31"
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      id="c94230466"
      unitRef="USD">0</us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingGain>
    <us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230467"
      unitRef="USD">168000</us-gaap:HeldToMaturitySecuritiesAccumulatedUnrecognizedHoldingLoss>
    <us-gaap:HeldToMaturitySecuritiesFairValue
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230468"
      unitRef="USD">9173000</us-gaap:HeldToMaturitySecuritiesFairValue>
    <us-gaap:InvestmentsClassifiedByContractualMaturityDateTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302379">
     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Amortized Cost&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Fair Value&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Within one year&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;2,981&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;2,957&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;After one year through two years&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;4,919&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;4,807&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;After two years through three years&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1,441&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1,409&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin-top: 0pt; margin-bottom: 0pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;9,341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;9,173&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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    <us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount
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      unitRef="USD">2981000</us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearNetCarryingAmount>
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      decimals="-3"
      id="c94230472"
      unitRef="USD">2957000</us-gaap:HeldToMaturitySecuritiesDebtMaturitiesWithinOneYearFairValue>
    <ftek:DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230473"
      unitRef="USD">4919000</ftek:DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo>
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      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230474"
      unitRef="USD">4807000</ftek:DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearOneThroughTwo>
    <ftek:DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230475"
      unitRef="USD">1441000</ftek:DebtSecuritiesHeldtomaturityAmortizedCostAfterAllowanceForCreditLossMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree>
    <ftek:DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230476"
      unitRef="USD">1409000</ftek:DebtSecuritiesHeldtomaturityFairValueMaturityAllocatedAndSingleMaturityDateAfterYearTwoThroughThree>
    <us-gaap:DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230477"
      unitRef="USD">9341000</us-gaap:DebtSecuritiesHeldToMaturityAmortizedCostAfterAllowanceForCreditLoss>
    <us-gaap:HeldToMaturitySecuritiesFairValue
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230478"
      unitRef="USD">9173000</us-gaap:HeldToMaturitySecuritiesFairValue>
    <ftek:ForeignCurrencyRiskManagementPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232743">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Foreign Currency Risk Management&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Our earnings and cash flows are subject to fluctuations due to changes in foreign currency exchange rates. We do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; enter into foreign currency forward contracts or into foreign currency option contracts to manage this risk due to the nature of the transactions involved.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</ftek:ForeignCurrencyRiskManagementPolicyTextBlock>
    <us-gaap:TradeAndOtherAccountsReceivablePolicy contextRef="d_2022-01-01_2022-12-31" id="c94232744">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Accounts Receivable&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Accounts receivable consist of amounts due to us in the normal course of our business, are &lt;em style="font: inherit;"&gt;not&lt;/em&gt; collateralized, and normally do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; bear interest. Accounts receivable includes contract assets, billings occurring subsequent to revenue recognition under Accounting Standards Codification (ASC) &lt;em style="font: inherit;"&gt;606&lt;/em&gt; &lt;i&gt;Revenue from Contracts with Customers&lt;/i&gt;. At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, unbilled receivables were approximately $3,082 and $1,277, respectively. Refer to Note &lt;em style="font: inherit;"&gt;2&lt;/em&gt; for further detail.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/p&gt;</us-gaap:TradeAndOtherAccountsReceivablePolicy>
    <us-gaap:UnbilledContractsReceivable
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      id="c94230325"
      unitRef="USD">3082000</us-gaap:UnbilledContractsReceivable>
    <us-gaap:UnbilledContractsReceivable
      contextRef="i_2021-12-31"
      decimals="-3"
      id="c94230326"
      unitRef="USD">1277000</us-gaap:UnbilledContractsReceivable>
    <us-gaap:ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy contextRef="d_2022-01-01_2022-12-31" id="c94232745">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Allowance for Doubtful Accounts&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The allowance for doubtful accounts is our management's best estimate of the amount of credit losses in accounts receivable. In order to control and monitor the credit risk associated with our customer base, we review the credit worthiness of customers on a recurring basis. Factors influencing the level of scrutiny include the level of business the customer has with Fuel Tech, the customer&#x2019;s payment history, and the customer&#x2019;s financial stability. At the end of each reporting period, the allowance for doubtful accounts balance is reviewed relative to management&#x2019;s collectability assessment and is adjusted if deemed necessary.&#160; Bad debt write-offs are made when management believes it is probable a receivable will &lt;em style="font: inherit;"&gt;not&lt;/em&gt; be recovered. The table below sets forth the components of the Allowance for Doubtful Accounts for the years ended &lt;em style="font: inherit;"&gt; December&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;31.&lt;/em&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Year&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Balance at January 1&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Provision charged to expense&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Write-offs / Recoveries&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Balance at December 31&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;2021&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;835&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;227&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;(839&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;223&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2022&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;223&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(19&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(94&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;110&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;</us-gaap:ReceivablesTradeAndOtherAccountsReceivableAllowanceForDoubtfulAccountsPolicy>
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     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Year&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Balance at January 1&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Provision charged to expense&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Write-offs / Recoveries&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Balance at December 31&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;2021&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;835&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;227&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;(839&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;223&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2022&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;223&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(19&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(94&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;110&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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      contextRef="i_2020-12-31"
      decimals="-3"
      id="c94230483"
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      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230484"
      unitRef="USD">227000</ftek:ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange>
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      decimals="-3"
      id="c94230485"
      unitRef="USD">839000</ftek:AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries>
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      contextRef="i_2021-12-31"
      decimals="-3"
      id="c94230486"
      unitRef="USD">223000</us-gaap:AllowanceForDoubtfulAccountsReceivable>
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      contextRef="i_2021-12-31"
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      contextRef="d_2022-01-01_2022-12-31"
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      id="c94230488"
      unitRef="USD">-19000</ftek:ProvisionForDoubtfulAccountsIncludingForeignImpactOfForeignExchange>
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      decimals="-3"
      id="c94230489"
      unitRef="USD">94000</ftek:AllowanceForDoubtfulAccountsReceivableChargeoffsRecoveries>
    <us-gaap:AllowanceForDoubtfulAccountsReceivable
      contextRef="i_2022-12-31"
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    <ftek:PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232746">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Prepaid expenses and other current assets&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Prepaid expenses and other current assets include&#160;Chinese banker acceptances of $0&#160;and $55&#160;as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, respectively. These are short-term commitments of typically &lt;em style="font: inherit;"&gt;three&lt;/em&gt; to &lt;em style="font: inherit;"&gt;six&lt;/em&gt; months&#160;for future payments and can be redeemed at a discount or applied to future vendor payments.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</ftek:PrepaidExpensesAndOtherCurrentAssetsPolicyTextBlock>
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    <us-gaap:InventoryPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232747">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Inventories&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Inventories consist primarily of equipment constructed for resale&#160;and spare parts and are stated at the lower of cost or net realizable value, using the weighted-average cost method. At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, inventory included equipment constructed for resale of$207&lt;span style="background-color:#ffffff;"&gt;&#160;and &lt;/span&gt;$227&lt;span style="background-color:#ffffff;"&gt;, respectively, and spare parts, net of reserves of &lt;/span&gt;$185&lt;span style="background-color:#ffffff;"&gt;&#160;and &lt;/span&gt;$121&lt;span style="background-color:#ffffff;"&gt;, respectively.&lt;/span&gt; Usage is recorded in cost of sales in the period that parts were issued to a project or used to service equipment.&#160;Equipment constructed for resale that is&#160;in process&#160;is recorded in Other assets. In process equipment for inventory recorded as other assets was $634 and $627&#160;as of &lt;em style="font: inherit;"&gt; December 31, 2022 &lt;/em&gt;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt; respectively.&#160;&#160;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Inventories are periodically evaluated to identify obsolete or otherwise impaired parts and are written off when management determines usage is &lt;em style="font: inherit;"&gt;not&lt;/em&gt; probable. The Company estimates the balance of excess and obsolete inventory by analyzing inventory by age using last used and original purchase date and existing sales pipeline for which the inventory could be used.&#160;The table below sets forth the components of the Excess and Obsolete Inventory Reserve for the years ended &lt;em style="font: inherit;"&gt; December 31.&lt;/em&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

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&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2021&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;907&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;20&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;927&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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    <us-gaap:ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232748">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Foreign Currency Translation and Transactions&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Assets and liabilities of consolidated foreign subsidiaries are translated into U.S. dollars at exchange rates in effect at year end. Revenues and expenses are translated at average exchange rates prevailing during the year. Gains or losses on foreign currency transactions and the related tax effects are reflected in net income. The resulting translation adjustments are included in stockholders&#x2019; equity as part of accumulated other comprehensive loss.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/p&gt;</us-gaap:ForeignCurrencyTransactionsAndTranslationsPolicyTextBlock>
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     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;b&gt;Foreign currency translation&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Balance at beginning of period&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(1,604&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(1,370&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Other comprehensive loss:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Foreign currency translation adjustments (1)&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(124&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(234&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Balance at end of period&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1,728&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1,604&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;b&gt;Total accumulated other comprehensive loss&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,728&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,604&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
    &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:36pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;(&lt;em style="font: inherit;"&gt;1&lt;/em&gt;)&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;In all periods presented, there were &lt;em style="font: inherit;"&gt;no&lt;/em&gt; tax impacts related to functional currency translation adjustments.&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</ftek:AccumulatedOtherComprehensiveIncomeLossPolicyPolicyTextBlock>
    <us-gaap:ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302382">
     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;b&gt;Foreign currency translation&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Balance at beginning of period&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(1,604&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(1,370&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Other comprehensive loss:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Foreign currency translation adjustments (1)&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(124&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(234&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Balance at end of period&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1,728&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1,604&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;b&gt;Total accumulated other comprehensive loss&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,728&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,604&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
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    <us-gaap:ResearchAndDevelopmentExpensePolicy contextRef="d_2022-01-01_2022-12-31" id="c94232750">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Research and Development&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Research and development costs are expensed as incurred. Research and development projects funded by customer contracts are reported as part of cost of goods sold. Internally funded research and development expenses are reported as operating expenses.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</us-gaap:ResearchAndDevelopmentExpensePolicy>
    <us-gaap:StandardProductWarrantyPolicy contextRef="d_2022-01-01_2022-12-31" id="c94232751">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Product/System Warranty&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We typically warrant our air pollution control products and systems against defects in design, materials and workmanship for &lt;span style="-sec-ix-hidden:c94230348"&gt;one&lt;/span&gt; to &lt;span style="-sec-ix-hidden:c94230349"&gt;two&lt;/span&gt; years. A provision for estimated future costs relating to warranty expense is recorded when the products/systems become commercially operational.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</us-gaap:StandardProductWarrantyPolicy>
    <us-gaap:GoodwillAndIntangibleAssetsPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232752">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Goodwill&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;Goodwill is evaluated for impairment at the reporting unit level, which is defined as an operating segment or &lt;em style="font: inherit;"&gt;one&lt;/em&gt; level below an operating segment. Goodwill of our reporting units is assigned upon acquisition after considering the nature of the net assets giving rise to the goodwill and how each reporting unit would enjoy the benefits and synergies of the net assets acquired. We have &lt;span style="-sec-ix-hidden:c94230351"&gt;two&lt;/span&gt; reporting units for goodwill evaluation purposes: the FUEL CHEM technology segment and the APC technology reporting unit. There is &lt;em style="font: inherit;"&gt;no&lt;/em&gt; goodwill associated with our APC&#160;technology reporting unit. The entire goodwill balance of $2,116&#160;was allocated to the FUEL CHEM technology reporting unit&#160;as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Goodwill is tested for impairment at least annually as of the &lt;em style="font: inherit;"&gt;first&lt;/em&gt; day of our &lt;em style="font: inherit;"&gt;fourth&lt;/em&gt; quarter, or more frequently if events or changes in circumstances indicate that the carrying value &lt;em style="font: inherit;"&gt; may &lt;/em&gt;&lt;em style="font: inherit;"&gt;not&lt;/em&gt; be recoverable. Our evaluation of goodwill impairment involves &lt;em style="font: inherit;"&gt;first&lt;/em&gt; assessing qualitative factors to determine whether it is more likely than &lt;em style="font: inherit;"&gt;not&lt;/em&gt; that the fair value of a reporting unit is less than its carrying amount. We &lt;em style="font: inherit;"&gt; may &lt;/em&gt;bypass this qualitative assessment, or determine that based on our qualitative assessment considering the totality of events and circumstances including macroeconomic factors, industry and market considerations, current and projected financial performance, a sustained decrease in our share price, or other factors, that additional impairment analysis is necessary. This additional analysis involves comparing the current fair value of our reporting units to their carrying values. We use a discounted cash flow (DCF) model to determine the current fair value of our FUEL CHEM&#160;reporting unit. A number of significant assumptions and estimates are involved in the application of the DCF model to forecast operating cash flows, including markets and market share, sales volumes and prices, costs to produce and working capital changes. Management considers historical experience and all available information at the time the fair values of its reporting units are estimated. However, actual fair values that could be realized in an actual transaction &lt;em style="font: inherit;"&gt; may &lt;/em&gt;differ from those used to evaluate the impairment of goodwill. Fuel Tech performed its annual goodwill impairment analysis as of &lt;em style="font: inherit;"&gt; October 1, &lt;/em&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&#160;and determined that &lt;em style="font: inherit;"&gt;no&lt;/em&gt; impairment of goodwill existed. The Company did &lt;span style="-sec-ix-hidden:c94230363"&gt;&lt;span style="-sec-ix-hidden:c94230364"&gt;not&lt;/span&gt;&lt;/span&gt; recognize a charge for goodwill impairment for the periods ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Other Intangible Assets&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Management reviews other finite-lived intangible assets, patent assets, trade names,&#160;and lease assets for impairment when events or changes in circumstances indicate the carrying amount of an asset or asset group &lt;em style="font: inherit;"&gt; may &lt;/em&gt;&lt;em style="font: inherit;"&gt;not&lt;/em&gt; be recoverable. In the event that impairment indicators exist, a further analysis is performed and if the sum of the expected undiscounted future cash flows resulting from the use of the asset or asset group is less than the carrying amount of the asset or asset group, an impairment loss equal to the excess of the asset or asset group's carrying value over its fair value is recorded. Management considers historical experience and all available information at the time the estimates of future cash flows are made, however, the actual cash values that could be realized &lt;em style="font: inherit;"&gt; may &lt;/em&gt;differ from those that are estimated.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
      &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;During the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, Fuel Tech recorded &lt;em style="font: inherit;"&gt;no&lt;/em&gt; patent or trademark abandonment charges.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Third-party costs related to the development of patents are included within other intangible assets on the consolidated balance sheets. The &lt;em style="font: inherit;"&gt;third&lt;/em&gt;-party costs capitalized as patent costs during the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt; were $37&#160;and $52, respectively. Third-party costs are comprised of legal fees that relate to the review and preparation of patent disclosures and filing fees incurred to present the patents to the required governing body.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Our intellectual property portfolio has been a significant building block for the APC and FUEL CHEM technology segments. The patents are essential to the generation of revenue for our businesses and are essential to protect us from competition in the markets in which we serve. These costs are being amortized on the straight-line method over the period beginning with the patent issuance date and ending on the patent expiration date. Patent maintenance fees are charged to operations as incurred.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Amortization expense from continuing operations for intangible assets was $88&#160;and $157&#160;for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, respectively. The table below shows the amortization period and other intangible asset cost by intangible asset as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, and the accumulated amortization and net intangible asset value in total for all other intangible assets.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="10" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="10" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 30%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Description of Other Intangibles&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Amortization Period (years)&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Gross Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Accumulated Amortization&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Net Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Gross Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Accumulated Amortization&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Net Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Patent assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1 - 20&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;803&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(406&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;397&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;789&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;448&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;803&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(406&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;397&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;789&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;448&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The table below shows the estimated future amortization expense for intangible assets:&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 85%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Year&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Estimated Amortization Expense&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2023&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;60&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2024&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;52&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2025&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;31&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2026&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;31&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2027&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;31&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Thereafter&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;192&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;397&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;</us-gaap:GoodwillAndIntangibleAssetsPolicyTextBlock>
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      contextRef="i_2022-12-31_StatementBusinessSegmentsAxis-FuelChemTechnologySegmentMember"
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      contextRef="i_2022-12-31_NatureOfExpenseAxis-CapitalizedThirdpartyCostsMember"
      decimals="-3"
      id="c94230372"
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    <us-gaap:FiniteLivedPatentsGross
      contextRef="i_2021-12-31_NatureOfExpenseAxis-CapitalizedThirdpartyCostsMember"
      decimals="-3"
      id="c94230373"
      unitRef="USD">52000</us-gaap:FiniteLivedPatentsGross>
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      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230374"
      unitRef="USD">88000</us-gaap:AmortizationOfIntangibleAssets>
    <us-gaap:AmortizationOfIntangibleAssets
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
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     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="10" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="10" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 30%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Description of Other Intangibles&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Amortization Period (years)&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Gross Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Accumulated Amortization&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Net Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Gross Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Accumulated Amortization&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Net Carrying Amount&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Patent assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1 - 20&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;803&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(406&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;397&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;789&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;448&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;803&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(406&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;397&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;789&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(341&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 7%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;448&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 85%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Year&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Estimated Amortization Expense&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2023&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;60&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2024&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;52&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2025&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;31&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2026&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;31&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2027&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;31&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Thereafter&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;192&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;397&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
    </us-gaap:ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
      contextRef="i_2022-12-31"
      decimals="-4"
      id="c94230554"
      unitRef="USD">60000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230555"
      unitRef="USD">52000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230556"
      unitRef="USD">31000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearThree>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230557"
      unitRef="USD">31000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFour>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230558"
      unitRef="USD">31000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseYearFive>
    <us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230559"
      unitRef="USD">192000</us-gaap:FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive>
    <us-gaap:FiniteLivedIntangibleAssetsNet
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230560"
      unitRef="USD">397000</us-gaap:FiniteLivedIntangibleAssetsNet>
    <us-gaap:PropertyPlantAndEquipmentPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232753">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Property and Equipment&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Property and equipment is stated at historical cost and does &lt;em style="font: inherit;"&gt;not&lt;/em&gt; include capital in process expenditures yet to be capitalized. Provisions for depreciation are computed by the straight-line method, using estimated useful lives that range based on the nature of the asset. Leasehold improvements are depreciated over the shorter of the associated lease term or the estimated useful life of the asset. Depreciation expense&#160;was $352&#160;and $584&#160;for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, respectively. The table below shows the depreciable life and cost by asset class as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, and the accumulated depreciation and net book value in total for all classes of assets.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 55%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Description of Property and Equipment&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Depreciable Life (years)&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Land&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,050&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,050&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Building&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;39&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Building and leasehold improvements&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3 - 39&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,626&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,626&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Field equipment&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3 - 4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,882&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,787&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Computer equipment and software&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2 - 3&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,117&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,099&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Furniture and fixtures&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3 - 10&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,306&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,308&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Vehicles&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;5&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Construction in process&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;29&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total cost&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;22,992&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;22,852&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Less accumulated depreciation&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(18,557&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(18,243&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total net book value&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;4,435&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;4,609&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Property and equipment is reviewed for impairment when events and circumstances indicate that the carrying amount of the assets (or asset group) &lt;em style="font: inherit;"&gt; may &lt;/em&gt;&lt;em style="font: inherit;"&gt;not&lt;/em&gt; be recoverable. If impairment indicators exist, we perform a more detailed analysis and an impairment loss is recognized when estimated future undiscounted cash flows expected to result from the use of the asset (or asset group) and its eventual disposition are less than the carrying amount. This process of analyzing impairment involves examining the operating condition of individual assets (or asset group) and estimating a fair value based upon current condition, relevant market factors and remaining estimated operational life compared to the asset&#x2019;s remaining depreciable life. Quoted market prices and other valuation techniques are used to determine expected cash flows.&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
    </us-gaap:PropertyPlantAndEquipmentPolicyTextBlock>
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    <us-gaap:Depreciation
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230380"
      unitRef="USD">584000</us-gaap:Depreciation>
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     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 55%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Description of Property and Equipment&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Depreciable Life (years)&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Land&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,050&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,050&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Building&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;39&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Building and leasehold improvements&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3 - 39&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,626&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,626&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Field equipment&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3 - 4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,882&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,787&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Computer equipment and software&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2 - 3&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,117&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,099&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Furniture and fixtures&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3 - 10&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,306&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,308&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Vehicles&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;5&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Construction in process&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;29&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total cost&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;22,992&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;22,852&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Less accumulated depreciation&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(18,557&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(18,243&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total net book value&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;4,435&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;4,609&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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    <us-gaap:RevenueRecognitionPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232754">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Revenue Recognition&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;&#160;&lt;/i&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The Company recognizes revenue when control of the promised goods or services is transferred to our customers, in an amount that reflects the consideration we expect to be entitled to in exchange for those goods or services. The majority of our contracts have a single performance obligation as the promise to transfer the individual goods or services is &lt;em style="font: inherit;"&gt;not&lt;/em&gt; separately identifiable from other promises in the contracts and, therefore, &lt;em style="font: inherit;"&gt;not&lt;/em&gt; distinct. Revenue is measured as the amount of consideration we expect to receive in exchange for transferring goods or providing services. Sales, value add, and other taxes we collect concurrent with revenue-producing&#160;activities&#160;are&#160;excluded&#160;from&#160;revenue.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;Air Pollution Control Technology&lt;/i&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Fuel Tech&#x2019;s APC contracts are typically &lt;span style="-sec-ix-hidden:c94230387"&gt;six&lt;/span&gt; to &lt;span style="-sec-ix-hidden:c94230388"&gt;eighteen&lt;/span&gt; months in length. A typical contract will have &lt;em style="font: inherit;"&gt;three&lt;/em&gt; or &lt;em style="font: inherit;"&gt;four&lt;/em&gt; critical operational measurements that, when achieved, serve as the basis for us to invoice the customer via progress billings. At a minimum, these measurements will include the generation of engineering drawings, the shipment of equipment and the completion of a system performance test.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;As part of most of its contractual APC project agreements, Fuel Tech will agree to customer-specific acceptance criteria that relate to the operational performance of the system that is being sold. These criteria are determined based on modeling that is performed by Fuel Tech personnel, which is based on operational inputs that are provided by the customer. The customer will warrant that these operational inputs are accurate as they are specified in the binding contractual agreement. Further, the customer is solely responsible for the accuracy of the operating condition information; typically all performance guarantees and equipment warranties granted by us are voidable if the operating condition information is inaccurate or is &lt;em style="font: inherit;"&gt;not&lt;/em&gt; met.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Since control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation. Fuel Tech uses the cost-to-cost input measure of progress for our contracts since it best depicts the transfer of assets to the customer which occurs as we incur costs on our contracts. Under the cost-to-cost input measure of progress, the extent of progress towards completion is measured based on the ratio of costs incurred to date to the total estimated costs at completion of the performance obligation. Revenues are recorded proportionally as costs are incurred. Costs to fulfill include all internal and external engineering costs, equipment charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product-line related, as appropriate (e.g. test equipment depreciation and certain insurance expenses).&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;Fuel&#160;Tech&#x2019;s&#160;APC&#160;product&#160;line&#160;also&#160;includes&#160;ancillary&#160;revenue&#160;for&#160;post&#160;contractual&#160;goods&#160;and&#160;services.&#160;Revenue&#160;associated&#160;with&#160;these&#160;activities&#160;are&#160;recognized&#160;at&#160;point&#160;in&#160;time&#160;when delivery&#160;of&#160;goods&#160;or&#160;completion&#160;of&#160;the&#160;service&#160;obligation&#160;is&#160;performed.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Fuel Tech has installed over 1,200 units with APC technology and normally provides performance guarantees to our customers based on the operating conditions for the project. As part of the project implementation process, we perform system start-up and optimization services that effectively serve as a test of actual project performance. We believe that this test, combined with the accuracy of the modeling that is performed, enables revenue to be recognized prior to the receipt of formal customer acceptance.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;FUEL CHEM&lt;/i&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;&#160;&lt;/i&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;Revenues from the sale of chemical products are recognized when control transfers to customer upon shipment or delivery of the product based on the applicable shipping terms. We generally recognize revenue for these arrangements at a point in time based on our evaluation of when the customer obtains control of the promised goods or services.&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;On occasion, Fuel Tech will engineer and sell its chemical pumping equipment.&#160; These projects are similar in nature to the APC projects described above and for those projects where control transfers over time, revenue is recognized based on the extent of progress towards completion of the single performance obligation.&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;For projects containing multiple performance obligations, the Company allocates the transaction price based on the estimated standalone selling price. The Company must develop assumptions that require judgment to determine the stand-alone selling price for each performance obligation identified in the contract. The Company utilizes key assumptions to determine the stand-alone selling price, which &lt;em style="font: inherit;"&gt; may &lt;/em&gt;include other comparable transactions, pricing considered in negotiating the transaction and the estimated costs. Variable consideration is allocated specifically to &lt;em style="font: inherit;"&gt;one&lt;/em&gt; or more performance obligations in a contract when the terms of the variable consideration relate to the satisfaction of the performance obligation and the resulting amounts allocated are consistent with the amounts the Company would expect to receive for the satisfaction of each performance obligation.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The consideration allocated to each performance obligation is recognized as revenue when control is transferred for the related goods or services. For performance obligations which consist of licenses and other promises, the Company utilizes judgment to assess the nature of the combined performance obligation to determine whether the combined performance obligation is satisfied over time or at a point in time and, if over time, the appropriate method of measuring progress. The Company evaluates the measure of progress each reporting period and, if necessary, adjusts the measure of performance and related revenue recognition.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The Company receives payments from its customers based on billing schedules established in each contract. Up-front payments and fees are recorded as deferred revenue upon receipt or when due until the Company performs its obligations under these arrangements. Amounts are recorded as accounts receivable when the Company&#x2019;s right to consideration is unconditional.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i/&gt;&lt;/p&gt;
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      unitRef="Pure">1200</ftek:NumberOfUnitsWithApcTechnology>
    <us-gaap:CostOfSalesPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232755">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Cost of Sales&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Cost of sales includes all internal and external engineering costs, equipment and chemical charges, inbound and outbound freight expenses, internal and site transfer costs, installation charges, purchasing and receiving costs, inspection costs, warehousing costs, project personnel travel expenses and other direct and indirect expenses specifically identified as project- or product line-related, as appropriate (e.g., test equipment depreciation and certain insurance expenses). Certain depreciation and amortization expenses related to tangible and intangible assets, respectively, are allocated to cost of sales. We classify shipping and handling costs in cost of sales in the consolidated statements of operations.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</us-gaap:CostOfSalesPolicyTextBlock>
    <us-gaap:SellingGeneralAndAdministrativeExpensesPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232756">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Selling, General and Administrative Expenses&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Selling, general and administrative expenses primarily include the following categories except where an allocation to the cost of sales line item is warranted due to the project- or product-line nature of a portion of the expense category: salaries and wages, employee benefits, non-project travel, insurance, legal, rent, accounting and auditing, recruiting, telephony, employee training, Board of Directors&#x2019; fees, auto rental, office supplies, dues and subscriptions, utilities, real estate taxes, commissions and bonuses, marketing materials, postage and business taxes. Departments comprising the selling, general and administrative line item primarily include the functions of executive management, finance and accounting, investor relations, regulatory affairs, marketing, business development, information technology, human resources, sales, legal and general administration.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</us-gaap:SellingGeneralAndAdministrativeExpensesPolicyTextBlock>
    <us-gaap:IncomeTaxPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232757">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Income Taxes&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The provision for income taxes is determined using the asset and liability approach of accounting for income taxes. Under this approach, the provision for income taxes represents income taxes paid or payable (or received or receivable) for the current year plus the change in deferred taxes during the year. Deferred taxes represent the future tax consequences expected to occur when the reported amounts of assets and liabilities are recovered or paid, and result from differences between the financial and tax bases of our assets and liabilities and are adjusted for changes in tax rates and tax laws when enacted. Valuation allowances are recorded to reduce deferred tax assets when it is more likely than &lt;em style="font: inherit;"&gt;not&lt;/em&gt; that a tax benefit will &lt;em style="font: inherit;"&gt;not&lt;/em&gt; be realized. In evaluating the need for a valuation allowance, management considers all potential sources of taxable income, including income available in carryback periods, future reversals of taxable temporary differences, projections of taxable income, and income from tax planning strategies, as well as all available positive and negative evidence. Positive evidence includes factors such as a history of profitable operations, projections of future profitability within the carryforward period, including from tax planning strategies, and our experience with similar operations. Negative evidence includes items such as cumulative losses, projections of future losses, or carryforward periods that are &lt;em style="font: inherit;"&gt;not&lt;/em&gt; long enough to allow for the utilization of a deferred tax asset based on existing projections of income. Deferred tax assets for which &lt;em style="font: inherit;"&gt;no&lt;/em&gt; valuation allowance is recorded &lt;em style="font: inherit;"&gt; may &lt;/em&gt;&lt;em style="font: inherit;"&gt;not&lt;/em&gt; be realized upon changes in facts and circumstances.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Tax benefits related to uncertain tax positions taken or expected to be taken on a tax return are recorded when such benefits meet a more likely than &lt;em style="font: inherit;"&gt;not&lt;/em&gt; threshold. Otherwise, these tax benefits are recorded when a tax position has been effectively settled, which means that the statute of limitation has expired or the appropriate taxing authority has completed their examination even though the statute of limitations remains open. Interest and penalties related to uncertain tax positions are recognized as part of the provision for income taxes and are accrued beginning in the period that such interest and penalties would be applicable under relevant tax law until such time that the related tax benefits are recognized.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/p&gt;</us-gaap:IncomeTaxPolicyTextBlock>
    <us-gaap:LesseeLeasesPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232758">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;Leases&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The Company applies the provisions of ASC&#160;&lt;em style="font: inherit;"&gt;842,&lt;/em&gt; Leases. The Company&#160;determines if an arrangement is a lease at inception by evaluating whether the arrangement conveys the right to use an identified asset and whether the Company obtains substantially all of the economic benefits from and has the ability to direct the use of the asset.&#160;Right-of-use&#160;(ROU)&#160;assets&#160;and&#160;lease&#160;liabilities&#160;are&#160;recognized&#160;at&#160;the&#160;lease&#160;commencement&#160;date&#160;based&#160;on&#160;the&#160;present&#160;value&#160;of&#160;the&#160;future&#160;minimum&#160;lease&#160;payments&#160;over the&#160;lease&#160;term.&#160;Operating&#160;ROU&#160;assets&#160;also&#160;include&#160;the&#160;impact&#160;of&#160;any&#160;lease&#160;incentives. Operating leases are included in right-of-use&#160;operating lease assets, operating lease liabilities - current, and operating lease liabilities - non-current on our Consolidated Balance Sheets.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As most of our leases do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. Our lease terms &lt;em style="font: inherit;"&gt; may &lt;/em&gt;include options to extend or terminate the lease when it is reasonably certain that we will exercise that option. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We have lease agreements with lease and non-lease components, and&#160;we elected the practical expedient to &lt;em style="font: inherit;"&gt;not&lt;/em&gt; separate lease and non-lease components for the majority of our leases. For certain equipment leases, such as vehicles, we account for the lease and non-lease components as a single lease component. We also elected the practical expedient for leases with an initial term of &lt;em style="font: inherit;"&gt;12&lt;/em&gt; months or less.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;</us-gaap:LesseeLeasesPolicyTextBlock>
    <us-gaap:ShareBasedCompensationOptionAndIncentivePlansPolicy contextRef="d_2022-01-01_2022-12-31" id="c94232759">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Stock-Based Compensation&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Our stock-based employee compensation plan, referred to as the Fuel Tech, Inc. &lt;em style="font: inherit;"&gt;2014&lt;/em&gt; Long-Term Incentive Plan (Incentive Plan), was adopted in &lt;em style="font: inherit;"&gt; May 2014 &lt;/em&gt;and allows for awards to be granted to participants in the form of non-qualified stock options, incentive stock options, stock appreciation rights, restricted stock, restricted stock units, performance awards, and bonuses or other forms of share-based or non-share-based awards or combinations thereof. Participants in the Incentive Plan &lt;em style="font: inherit;"&gt; may &lt;/em&gt;be our directors, officers, employees, consultants or advisors (except consultants or advisors in capital-raising transactions) as the directors determine are key to the success of our business. There are a maximum of 5,600,676&#160;shares that &lt;em style="font: inherit;"&gt; may &lt;/em&gt;be issued or reserved for awards to participants under the Incentive Plan as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;. Based on the existing issued or reserved awards in Incentive Plan, there are 1,899,250&#160;shares available to be used for future awards to participants in the Incentive Plan as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;</us-gaap:ShareBasedCompensationOptionAndIncentivePlansPolicy>
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    <us-gaap:PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy contextRef="d_2022-01-01_2022-12-31" id="c94232760">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Defined Contribution Plan&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;span style="background-color:#ffffff;"&gt;We have a retirement savings plan available for all our U.S. employees who have met minimum length-of-service requirements. Our contributions are determined based upon amounts contributed by the employees with additional contributions made at the discretion of the Board of Directors. Costs related to this plan were &lt;/span&gt;$200&lt;span style="background-color:#ffffff;"&gt;&#160;and&#160;&lt;/span&gt;$206&lt;span style="background-color:#ffffff;"&gt;&#160;in &lt;/span&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;&#160;and&#160;&lt;/span&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;, respectively.&lt;/span&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</us-gaap:PensionAndOtherPostretirementPlansNonpensionBenefitsPolicy>
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    <us-gaap:EarningsPerSharePolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232761">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Basic and Diluted Earnings per Common Share&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;span style="background-color:#ffffff;"&gt;Basic earnings per share excludes the antidilutive effects of stock options, restricted stock units (RSUs), warrants, and the &lt;em style="font: inherit;"&gt;nil&lt;/em&gt; coupon non-redeemable convertible unsecured loan notes (see Note &lt;em style="font: inherit;"&gt;6&lt;/em&gt;). Diluted earnings per share includes the dilutive effect of the &lt;em style="font: inherit;"&gt;nil&lt;/em&gt; coupon non-redeemable convertible unsecured loan notes, RSUs, warrants, and unexercised in-the-money stock options, except in periods of net loss where the effect of these instruments is antidilutive. Out-of-the-money stock options and warrants are excluded from diluted earnings per share because they are unlikely to be exercised and would be anti-dilutive if they were exercised. At &lt;/span&gt;&lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;&#160;and &lt;/span&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;, we had weighted-average outstanding equity awards of &lt;/span&gt;763,800&lt;span style="background-color:#ffffff;"&gt;&#160;and &lt;/span&gt;214,500&lt;span style="background-color:#ffffff;"&gt;, respectively, and &lt;/span&gt;2,850,000&lt;span style="background-color:#ffffff;"&gt;&#160;warrants in both periods, which were antidilutive for the purpose of calculation of&#160;the diluted earnings per share. As of &lt;/span&gt;&lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;,&#160;&lt;/span&gt;42,600&lt;span style="background-color:#ffffff;"&gt;&#160;incremental equity awards were antidilutive because of the net loss in the year then ended. These equity awards could potentially dilute basic EPS in future years.&lt;/span&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The table below sets forth the weighted-average shares used at &lt;em style="font: inherit;"&gt; December&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;31&lt;/em&gt; in calculating earnings (loss) per share:&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Basic weighted-average shares&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;30,289,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;29,585,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Conversion of unsecured loan notes&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Unexercised options and unvested restricted stock units&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;109,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Diluted weighted-average shares&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;30,289,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;29,694,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
     &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;</us-gaap:EarningsPerSharePolicyTextBlock>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
      contextRef="i_2022-12-31_AwardTypeAxis-AntidilutiveMember"
      decimals="INF"
      id="c94230417"
      unitRef="Share">763800</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber>
    <us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
      contextRef="i_2021-12-31_AwardTypeAxis-AntidilutiveMember"
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      id="c94230418"
      unitRef="Share">214500</us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber>
    <us-gaap:ClassOfWarrantOrRightOutstanding
      contextRef="i_2022-12-31_AwardTypeAxis-AntidilutiveMember"
      decimals="INF"
      id="c94230419"
      unitRef="Share">2850000</us-gaap:ClassOfWarrantOrRightOutstanding>
    <us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
      contextRef="d_2022-01-01_2022-12-31"
      decimals="INF"
      id="c94230420"
      unitRef="Share">42600</us-gaap:AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount>
    <us-gaap:ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302386">
     &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Basic weighted-average shares&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;30,289,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;29,585,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Conversion of unsecured loan notes&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Unexercised options and unvested restricted stock units&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;109,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Diluted weighted-average shares&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;30,289,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;29,694,000&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
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    <us-gaap:WeightedAverageNumberOfSharesOutstandingBasic
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      contextRef="d_2021-01-01_2021-12-31"
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      unitRef="Share">29585000</us-gaap:WeightedAverageNumberOfSharesOutstandingBasic>
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      unitRef="Share">0</us-gaap:IncrementalCommonSharesAttributableToConversionOfDebtSecurities>
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      decimals="INF"
      id="c94230627"
      unitRef="Share">0</us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements>
    <us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
      contextRef="d_2021-01-01_2021-12-31"
      decimals="INF"
      id="c94230628"
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    <us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding
      contextRef="d_2022-01-01_2022-12-31"
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      decimals="INF"
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    <us-gaap:ConcentrationRiskCreditRisk contextRef="d_2022-01-01_2022-12-31" id="c94232762">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Risk Concentrations&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Financial instruments that potentially subject the Company to a significant concentration of credit risk consist primarily of cash and cash equivalents and accounts receivable. The Company maintains deposits in federally insured financial institutions in excess of federally insured limits. However, management believes the Company is &lt;em style="font: inherit;"&gt;not&lt;/em&gt; exposed to significant credit risk due to the financial position of its primary depository institution where a significant portion of its deposits are held.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;For the year ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, &lt;span style="background-color:#ffffff;"&gt;we had three customers which individually represented greater than &lt;em style="font: inherit;"&gt;10%&lt;/em&gt; of revenues. Two customers primarily contributed revenues to the FUEL CHEM technology segment and one contributed revenue&#160;to the APC technology segment. In total these &lt;em style="font: inherit;"&gt;three&lt;/em&gt; customers represented 48% of consolidated revenues. We had &lt;em style="font: inherit;"&gt;no&lt;/em&gt; customer&#160;that accounted for greater than &lt;em style="font: inherit;"&gt;10%&lt;/em&gt; of our current assets as of &lt;/span&gt;&lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;.&lt;/span&gt;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;For the year ended &lt;em style="font: inherit;"&gt; December 31, 2021&lt;/em&gt;, we had four customers which individually represented greater than &lt;em style="font: inherit;"&gt;10%&lt;/em&gt; of revenues. Three customers primarily contributed revenues to the FUEL CHEM technology segment and one contributed revenue&#160;to the APC technology segment. In total these &lt;em style="font: inherit;"&gt;four&lt;/em&gt; customers represented 60% of consolidated revenues. We had &lt;em style="font: inherit;"&gt;no&lt;/em&gt; customer&#160;that accounted for greater than &lt;em style="font: inherit;"&gt;10%&lt;/em&gt; of our current assets as of &lt;em style="font: inherit;"&gt; December 31, 2021&lt;/em&gt;.&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We control credit risk through requiring milestone payments on long-term contracts, performing ongoing credit evaluations of its customers, and in some cases obtaining security for payment through bank guarantees and letters of credit.&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;</us-gaap:ConcentrationRiskCreditRisk>
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    <us-gaap:NewAccountingPronouncementsPolicyPolicyTextBlock contextRef="d_2022-01-01_2022-12-31" id="c94232764">&lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Recently Issued Accounting Pronouncements&lt;/b&gt;&lt;/p&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;In &lt;em style="font: inherit;"&gt; June 2016, &lt;/em&gt;the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) &lt;em style="font: inherit;"&gt;2016&lt;/em&gt;-&lt;em style="font: inherit;"&gt;13,&lt;/em&gt;&#160;Financial Instruments - Credit Losses (Topic &lt;em style="font: inherit;"&gt;326&lt;/em&gt;): Measurement of Credit Losses on Financial Instruments, and in &lt;em style="font: inherit;"&gt; November 2019, &lt;/em&gt;the FASB issued ASU &lt;em style="font: inherit;"&gt;2019&lt;/em&gt;-&lt;em style="font: inherit;"&gt;10,&lt;/em&gt; Financial Instruments - Credit Losses (Topic &lt;em style="font: inherit;"&gt;326&lt;/em&gt;), Derivatives and Hedging (Topic &lt;em style="font: inherit;"&gt;815&lt;/em&gt;), and Leases (Topic &lt;em style="font: inherit;"&gt;842&lt;/em&gt;).&#160;This guidance amends the current accounting guidance and requires the measurement of all expected losses based on historical experience, current conditions and reasonable and supportable forecasts. For trade receivables, loans, and other financial instruments, we will be required to use a forward-looking expected loss model rather than the incurred loss model for recognizing credit losses which reflects losses that are probable. The standard will become effective for interim and annual periods beginning on &lt;em style="font: inherit;"&gt; January 1, 2023 &lt;/em&gt;for Fuel Tech. Application of the amendments is through a cumulative-effect adjustment to retained earnings as of the effective date. The Company is finalizing the impact of adoption, but we do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; believe the adoption of this standard will have a material impact on our financial statements. Beginning on &lt;em style="font: inherit;"&gt; January 1, 2023, &lt;/em&gt;Fuel Tech will use the caption Allowance for Credit Losses and our expected credit loss model to calculate the allowance.&lt;/p&gt;</us-gaap:NewAccountingPronouncementsPolicyPolicyTextBlock>
    <us-gaap:RevenueFromContractWithCustomerTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302387">
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;2.&lt;/em&gt;&#160;&#160;&#160;&#160;&#160;REVENUE RECOGNITION&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;Disaggregated Revenue by Product Technology&lt;/i&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The following table presents our revenues disaggregated by product technology:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;Twelve Months Ended December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Air Pollution Control&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Technology solutions&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;7,935&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;4,189&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Spare parts&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;911&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;1,138&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Ancillary revenue&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1,751&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1,569&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Total Air Pollution Control technology&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;10,597&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;6,896&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;FUEL CHEM&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;FUEL CHEM technology solutions&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;16,344&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;17,365&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Total Revenues&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;26,941&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;24,261&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;Disaggregated Revenue by Geography&lt;/i&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The following table presents our revenues disaggregated by geography, based on the location of the end-user:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;Twelve Months Ended December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;United States&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;20,311&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;19,515&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Foreign Revenues&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Americas&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;213&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;356&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Europe&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;2,888&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;1,894&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Asia&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;3,529&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;2,496&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Total Foreign Revenues&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;6,630&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;4,746&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Total Revenues&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;26,941&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;24,261&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;i&gt;Timing of Revenue Recognition&lt;/i&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The following table presents the timing of our revenue recognition:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;Twelve Months Ended December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Products transferred at a point in time&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;18,849&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;20,072&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Products and services transferred over time&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;8,092&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;4,189&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Total Revenues&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;26,941&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;24,261&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;Contract Balances&lt;/i&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The timing of revenue recognition, billings and cash collections results in billed accounts receivable, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on the Consolidated Balance Sheets. In our APC technology segment, amounts are billed as work progresses in accordance with agreed-upon contractual terms. Generally, billing occurs subsequent to revenue recognition, resulting in contract assets. For the FUEL&#160;CHEM technology segment, deliveries made in the current period but billed in subsequent periods are also considered contract assets.&#160;These assets are reported on the Consolidated Balance Sheet on a contract-by-contract basis at the end of each reporting period. At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;,&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, and &lt;em style="font: inherit;"&gt;2020&lt;/em&gt;&#160;contract assets for APC technology projects were&#160;approximately $3,082, $1,277,&#160;and $2,079, respectively, and at &lt;em style="font: inherit;"&gt; December 31, 2020, &lt;/em&gt;contract assets for the FUEL CHEM technology segment were approximately $269, and are included in accounts receivable on the consolidated balance sheets. There were no contract assets for the FUEL CHEM technology segment as of&#160;&lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;However, the Company will periodically bill in advance of costs incurred before revenue is recognized, resulting in contract liabilities. These liabilities are reported on the consolidated balance sheet on a contract-by-contract basis at the end of each reporting period. Contract liabilities were $372,&#160;$390, and $850 at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;,&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, and &lt;em style="font: inherit;"&gt;2020&lt;/em&gt;, respectively, and are included in other accrued liabilities on the consolidated balance sheets.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Changes in the contract asset and liability balances during the year ended&#160;&lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, were &lt;em style="font: inherit;"&gt;not&lt;/em&gt; materially impacted by any other items other than amounts billed and revenue recognized as described previously. Revenue recognized that was included in the contract liability balance at the beginning of the period was $384&#160;and $776&#160;for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, respectively, which represented primarily revenue from progress toward completion of our APC technology contracts.&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;As of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&#160;we had no&#160;construction contracts in progress that were identified as a loss contract.&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;Remaining Performance Obligations&lt;/i&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Remaining performance obligations, represents the transaction price of APC technology booked orders for which work has &lt;em style="font: inherit;"&gt;not&lt;/em&gt; been performed. As of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, the aggregate amount of the transaction price allocated to remaining performance obligations was $8,245. The Company expects to recognize revenue on approximately $7,926&#160;of the remaining performance obligations over the next 12 months with the remaining recognized thereafter.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;i&gt;Practical Expedients and Exemptions&lt;/i&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We generally expense sales commissions on a ratable basis when incurred because the amortization period would have been &lt;em style="font: inherit;"&gt;one&lt;/em&gt; year or less. These costs are recorded within selling, general and administrative expenses within the Consolidated Statements of Operations. A practical expedient was elected to &lt;em style="font: inherit;"&gt;not&lt;/em&gt; recognize shipping and handling costs as a separate performance obligation under ASC &lt;em style="font: inherit;"&gt;606.&lt;/em&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;&#160;&lt;/i&gt;&lt;/p&gt;


   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;Accounts Receivable&lt;/i&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;i&gt;&#160;&lt;/i&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;The components of accounts receivable are as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;As of&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Trade receivables&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;4,605&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,122&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Unbilled receivables&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,082&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,277&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Other short-term receivables&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;152&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;83&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Allowance for doubtful accounts&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(110&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(223&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total accounts receivable&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;7,729&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;3,259&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&#160;&#160;&lt;/b&gt;&lt;/p&gt;
  </us-gaap:RevenueFromContractWithCustomerTextBlock>
    <us-gaap:DisaggregationOfRevenueTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302388">
    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;Twelve Months Ended December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Air Pollution Control&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Technology solutions&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;7,935&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;4,189&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Spare parts&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;911&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;1,138&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Ancillary revenue&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1,751&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1,569&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Total Air Pollution Control technology&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;10,597&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;6,896&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;FUEL CHEM&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;FUEL CHEM technology solutions&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;16,344&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;17,365&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Total Revenues&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;26,941&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;24,261&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
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      id="c94230666"
      unitRef="USD">7935000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_ProductOrServiceAxis-TechnologySolutionsMember_StatementBusinessSegmentsAxis-AirPollutionControlMember"
      decimals="-3"
      id="c94230667"
      unitRef="USD">4189000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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      contextRef="d_2022-01-01_2022-12-31_ProductOrServiceAxis-SparePartsMember_StatementBusinessSegmentsAxis-AirPollutionControlMember"
      decimals="-3"
      id="c94230668"
      unitRef="USD">911000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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      contextRef="d_2021-01-01_2021-12-31_ProductOrServiceAxis-SparePartsMember_StatementBusinessSegmentsAxis-AirPollutionControlMember"
      decimals="-3"
      id="c94230669"
      unitRef="USD">1138000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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      contextRef="d_2022-01-01_2022-12-31_ProductOrServiceAxis-AncillaryRevenueMember_StatementBusinessSegmentsAxis-AirPollutionControlMember"
      decimals="-3"
      id="c94230670"
      unitRef="USD">1751000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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      contextRef="d_2021-01-01_2021-12-31_ProductOrServiceAxis-AncillaryRevenueMember_StatementBusinessSegmentsAxis-AirPollutionControlMember"
      decimals="-3"
      id="c94230671"
      unitRef="USD">1569000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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      contextRef="d_2022-01-01_2022-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember"
      decimals="-3"
      id="c94230672"
      unitRef="USD">10597000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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      contextRef="d_2021-01-01_2021-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember"
      decimals="-3"
      id="c94230673"
      unitRef="USD">6896000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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      contextRef="d_2022-01-01_2022-12-31_ProductOrServiceAxis-TechnologySolutionsMember_StatementBusinessSegmentsAxis-FUELCHEMMember"
      decimals="-3"
      id="c94230675"
      unitRef="USD">16344000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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      contextRef="d_2021-01-01_2021-12-31_ProductOrServiceAxis-TechnologySolutionsMember_StatementBusinessSegmentsAxis-FUELCHEMMember"
      decimals="-3"
      id="c94230676"
      unitRef="USD">17365000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230677"
      unitRef="USD">26941000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230678"
      unitRef="USD">24261000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
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    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;Twelve Months Ended December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;United States&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;20,311&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;19,515&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Foreign Revenues&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Americas&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;213&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;356&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Europe&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;2,888&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;1,894&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Asia&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;3,529&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;2,496&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Total Foreign Revenues&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;6,630&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;4,746&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Total Revenues&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;26,941&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;24,261&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   </us-gaap:RevenueFromExternalCustomersByGeographicAreasTableTextBlock>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-US"
      decimals="-3"
      id="c94230683"
      unitRef="USD">20311000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-US"
      decimals="-3"
      id="c94230684"
      unitRef="USD">19515000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-AmericasMember"
      decimals="-3"
      id="c94230686"
      unitRef="USD">213000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-AmericasMember"
      decimals="-3"
      id="c94230687"
      unitRef="USD">356000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-EuropeMember"
      decimals="-3"
      id="c94230688"
      unitRef="USD">2888000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-EuropeMember"
      decimals="-3"
      id="c94230689"
      unitRef="USD">1894000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-AsiaMember"
      decimals="-3"
      id="c94230690"
      unitRef="USD">3529000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-AsiaMember"
      decimals="-3"
      id="c94230691"
      unitRef="USD">2496000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-NonUsMember"
      decimals="-4"
      id="c94230692"
      unitRef="USD">6630000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-NonUsMember"
      decimals="-3"
      id="c94230693"
      unitRef="USD">4746000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230694"
      unitRef="USD">26941000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230695"
      unitRef="USD">24261000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302390">
    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;Twelve Months Ended December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Products transferred at a point in time&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;18,849&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;20,072&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Products and services transferred over time&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;8,092&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;4,189&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;Total Revenues&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;26,941&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;24,261&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   </us-gaap:RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionTableTextBlock>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31_TimingOfTransferOfGoodOrServiceAxis-TransferredAtPointInTimeMember"
      decimals="-3"
      id="c94230700"
      unitRef="USD">18849000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_TimingOfTransferOfGoodOrServiceAxis-TransferredAtPointInTimeMember"
      decimals="-3"
      id="c94230701"
      unitRef="USD">20072000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31_TimingOfTransferOfGoodOrServiceAxis-TransferredOverTimeMember"
      decimals="-3"
      id="c94230702"
      unitRef="USD">8092000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_TimingOfTransferOfGoodOrServiceAxis-TransferredOverTimeMember"
      decimals="-3"
      id="c94230703"
      unitRef="USD">4189000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230704"
      unitRef="USD">26941000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230705"
      unitRef="USD">24261000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:ContractWithCustomerAssetNet
      contextRef="i_2022-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember"
      decimals="-3"
      id="c94230634"
      unitRef="USD">3082000</us-gaap:ContractWithCustomerAssetNet>
    <us-gaap:ContractWithCustomerAssetNet
      contextRef="i_2021-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember"
      decimals="-3"
      id="c94230635"
      unitRef="USD">1277000</us-gaap:ContractWithCustomerAssetNet>
    <us-gaap:ContractWithCustomerAssetNet
      contextRef="i_2020-12-31_StatementBusinessSegmentsAxis-AirPollutionControlMember"
      decimals="-3"
      id="c94230636"
      unitRef="USD">2079000</us-gaap:ContractWithCustomerAssetNet>
    <us-gaap:ContractWithCustomerAssetNet
      contextRef="i_2020-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember"
      decimals="-3"
      id="c94230637"
      unitRef="USD">269000</us-gaap:ContractWithCustomerAssetNet>
    <us-gaap:ContractWithCustomerAssetNet
      contextRef="i_2021-12-31_StatementBusinessSegmentsAxis-FUELCHEMMember"
      decimals="-3"
      id="c94230638"
      unitRef="USD">0</us-gaap:ContractWithCustomerAssetNet>
    <us-gaap:ContractWithCustomerLiabilityCurrent
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230641"
      unitRef="USD">372000</us-gaap:ContractWithCustomerLiabilityCurrent>
    <us-gaap:ContractWithCustomerLiabilityCurrent
      contextRef="i_2021-12-31"
      decimals="-4"
      id="c94230642"
      unitRef="USD">390000</us-gaap:ContractWithCustomerLiabilityCurrent>
    <us-gaap:ContractWithCustomerLiabilityCurrent
      contextRef="i_2020-12-31"
      decimals="-4"
      id="c94230643"
      unitRef="USD">850000</us-gaap:ContractWithCustomerLiabilityCurrent>
    <us-gaap:ContractWithCustomerLiabilityRevenueRecognized
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230647"
      unitRef="USD">384000</us-gaap:ContractWithCustomerLiabilityRevenueRecognized>
    <us-gaap:ContractWithCustomerLiabilityRevenueRecognized
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230648"
      unitRef="USD">776000</us-gaap:ContractWithCustomerLiabilityRevenueRecognized>
    <ftek:ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230651"
      unitRef="Pure">0</ftek:ContractWithCustomerContractsInProgressNumberOfContractsIdentifiedAsLossContracts>
    <us-gaap:RevenueRemainingPerformanceObligation
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94230654"
      unitRef="USD">8245000</us-gaap:RevenueRemainingPerformanceObligation>
    <us-gaap:RevenueRemainingPerformanceObligation
      contextRef="i_2022-12-31_RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis-RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionStartDateAxis.domain-2023-01-01"
      decimals="-3"
      id="c94230655"
      unitRef="USD">7926000</us-gaap:RevenueRemainingPerformanceObligation>
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    <us-gaap:ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302391">
    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;As of&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Trade receivables&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;4,605&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2,122&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Unbilled receivables&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,082&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,277&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Other short-term receivables&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;152&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;83&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Allowance for doubtful accounts&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(110&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(223&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total accounts receivable&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;7,729&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;3,259&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
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    <us-gaap:IncomeTaxDisclosureTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302392">
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;3.&lt;/em&gt;&#160;&#160;&#160;&#160;&#160;&lt;span style="background-color:#ffffff;"&gt;INCOME TAXES&lt;/span&gt;&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;Within the calculation of the Company&#x2019;s annual effective tax rate, the Company has used assumptions and estimates that &lt;em style="font: inherit;"&gt; may &lt;/em&gt;change as a result of future guidance, interpretation, and rule-making from the Internal Revenue Service, the SEC, and the FASB and/or various other taxing jurisdictions.&#160; For example, the Company anticipates that the state jurisdictions will continue to determine and announce their conformity to the U.S. Tax Act which could have an impact on the annual effective tax rate.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;On &lt;em style="font: inherit;"&gt; March 27, 2020 &lt;/em&gt;the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) was enacted which enacted the following relief among others;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:39pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:10pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;"&gt;&#x25cf;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;"&gt;Amended federal tax laws to permit &lt;em style="font: inherit;"&gt;100%&lt;/em&gt; bonus depreciation for eligible qualified improvement property placed in service by the taxpayer after &lt;em style="font: inherit;"&gt; December 31, 2017 &lt;/em&gt;and before &lt;em style="font: inherit;"&gt; January 1, 2023.&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:39pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:10pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;"&gt;&#x25cf;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;"&gt;Eliminated the &lt;em style="font: inherit;"&gt;80%&lt;/em&gt; of taxable income limitations by allowing corporate entities to fully utilize Net Operating Losses (NOL) carryforwards to offset taxable income in &lt;em style="font: inherit;"&gt;2018,&lt;/em&gt; &lt;em style="font: inherit;"&gt;2019&lt;/em&gt; or &lt;em style="font: inherit;"&gt;2020.&lt;/em&gt; The &lt;em style="font: inherit;"&gt;80%&lt;/em&gt; limitation is reinstated for tax years after &lt;em style="font: inherit;"&gt;2020.&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:39pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:10pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;"&gt;&#x25cf;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;"&gt;Increased the net interest expense deduction limit to &lt;em style="font: inherit;"&gt;50%&lt;/em&gt; of adjusted taxable income from &lt;em style="font: inherit;"&gt;30%&lt;/em&gt; for tax years beginning &lt;em style="font: inherit;"&gt; January 1, 2019 &lt;/em&gt;and &lt;em style="font: inherit;"&gt;2020.&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:39pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:10pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;"&gt;&#x25cf;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;"&gt;Allowed taxpayers with alternative minimum tax credits to claim a refund in &lt;em style="font: inherit;"&gt;2020&lt;/em&gt; for the entire amount of the credit instead of recovering the credit through refunds over a period of years, as originally enacted by the Tax Cuts and Jobs Act in &lt;em style="font: inherit;"&gt;2017.&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:39pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:10pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;"&gt;&#x25cf;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt 7.2pt 0pt 0pt; text-align: justify; font-size: 10pt;"&gt;Allowed taxpayers the carryback of Net Operating Losses (NOL) as a result of tax years beginning after &lt;em style="font: inherit;"&gt; December 31, 2017, &lt;/em&gt;but before &lt;em style="font: inherit;"&gt; January 1, 2021 &lt;/em&gt;for the &lt;em style="font: inherit;"&gt;five&lt;/em&gt; prior years of the generated loss.&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;On &lt;em style="font: inherit;"&gt; August 16, 2022, &lt;/em&gt;President Biden signed into law the Inflation Reduction Act (IRA) of &lt;em style="font: inherit;"&gt;2022,&lt;/em&gt; which, among other things, imposes a new &lt;em style="font: inherit;"&gt;15%&lt;/em&gt; corporate Alternative Minimum Tax (AMT) based on audited financial statement income ("AFSI") applicable to corporations with a &lt;em style="font: inherit;"&gt;three&lt;/em&gt;-year average AFSI over &lt;em style="font: inherit;"&gt;$1&lt;/em&gt; billion. The AMT&#160;is effective for the &lt;em style="font: inherit;"&gt;2023&lt;/em&gt; tax year and, if applicable, corporations must pay the greater of the regular corporate income tax or the AMT. Although NOL carryforwards created through the regular corporate income tax system cannot be used to reduce the AMT, financial statement net operating losses can be used to reduce AFSI and the amount of AMT owed. The IRA of &lt;em style="font: inherit;"&gt;2022&lt;/em&gt; as enacted requires the U.S. Treasury to provide regulations and other guidance necessary to administer the AMT, including further defining allowable adjustments to determine AFSI, which directly impacts the amount of AMT to be paid. Based on interim guidance issued by the U.S. Treasury in late &lt;em style="font: inherit;"&gt; December 2022, &lt;/em&gt;the Company believes that it is more likely than &lt;em style="font: inherit;"&gt;not&lt;/em&gt; it will &lt;em style="font: inherit;"&gt;not&lt;/em&gt; be subject to the AMT beginning &lt;em style="font: inherit;"&gt;2023.&lt;/em&gt; The Company continues to evaluate the impacts of the Inflation Reduction Act of &lt;em style="font: inherit;"&gt;2022&lt;/em&gt; but does &lt;em style="font: inherit;"&gt;not&lt;/em&gt; expect this legislation to have a material impact on the Company's financial statements.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;For tax years beginning before &lt;em style="font: inherit;"&gt; January 1, 2022, &lt;/em&gt;taxpayers can make an election with respect to research and experimental (R&amp;amp;E) expenditures incurred in connection with a trade or business to either currently deduct or defer and amortize such expenditures over a period of &lt;em style="font: inherit;"&gt;not&lt;/em&gt; less than &lt;em style="font: inherit;"&gt;60&lt;/em&gt; months. However, the Tax Cuts and Jobs Act of &lt;em style="font: inherit;"&gt;2017&lt;/em&gt; (TCJA) requires taxpayers to capitalize R&amp;amp;E expenditures effective for taxable years beginning after &lt;em style="font: inherit;"&gt; December 31, 2021. &lt;/em&gt;R&amp;amp;E expenditures attributable to US-based research must be amortized over a period of &lt;em style="font: inherit;"&gt;5&lt;/em&gt; years and R&amp;amp;E expenditures attributable to research conducted outside of the US must be amortized over a period of &lt;em style="font: inherit;"&gt;15&lt;/em&gt; years. Further, the statute provides that the definition of R&amp;amp;E expenditures includes amounts paid or incurred in connection with the development of any software.&#160; The Company has recorded a deferred tax asset of &lt;em style="font: inherit;"&gt;$528&lt;/em&gt; related to research and experimental expenditures for the year ending &lt;em style="font: inherit;"&gt; December 31, 2022.&lt;/em&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 14.7pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;The components of loss&#160;before taxes for the years ended &lt;em style="font: inherit;"&gt; December&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;31&lt;/em&gt; are as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Origin of income before taxes&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;United States&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(1,262&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;798&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Foreign&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(126&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(730&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Income (loss) before income taxes&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,388&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;68&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;


   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;Significant components of income tax benefit (expense) for the years ended &lt;em style="font: inherit;"&gt; December&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;31&lt;/em&gt; are as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Current:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Federal&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;State&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(6&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(9&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Foreign&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(10&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Total current&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(16&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(9&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Deferred:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Federal&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(19&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;State&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(19&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;(5&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Total deferred&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(38&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;(5&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Income tax expense&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(54&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(14&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;A reconciliation between the provision for income taxes calculated at the U.S. federal statutory income tax rate and the consolidated income tax expense in the consolidated statements of operations for the years ended &lt;em style="font: inherit;"&gt; December&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;31&lt;/em&gt; is as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Provision at the U.S. federal statutory rate&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;21.0&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;21.0&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;State taxes, net of federal benefit&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;3.1&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(15.5&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Foreign tax rate differential&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;0.4&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(30.2&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Valuation allowance&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(48.8&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(1504.6&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Chile outside basis differential&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;0.4&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;34.4&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;PPP Loan Forgiveness&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;(484.6&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Accrual to return&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;3.1&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;(329.3&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Research and development credit&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;5.9&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;(144.9&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;State rate change&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;9.5&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(124.0&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;China deferred adjustment&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;1006.0&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;China enterprise tax&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Share based compensation&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;3.3&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;1590.3&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Other true up&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Intangible assets impairment and other non-deductibles&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Other&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1.8&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;2.0&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Income tax (expense) benefit effective rate&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(3.9&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;20.6&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The deferred tax assets and liabilities at &lt;em style="font: inherit;"&gt; December&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;31&lt;/em&gt; are as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Deferred tax assets:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Stock compensation expense&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;272&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;173&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Goodwill&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;182&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;591&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Royalty accruals&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;10&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;10&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Bad debt allowance&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;53&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;51&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Net operating loss carryforwards&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;12,158&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Credit carry-forwards&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,058&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;992&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Inventory reserve&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;233&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;217&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Depreciation&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;585&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;556&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 18pt;"&gt;Research and Development Costs&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;528&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Other&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;471&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;376&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Total deferred tax assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;15,550&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;14,916&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Deferred tax liabilities:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Intangible assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(100&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(105&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Total deferred tax liabilities&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(100&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(105&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Net deferred tax asset before valuation allowance&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;15,450&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;14,811&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Valuation allowances for deferred tax assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(15,627&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(14,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Net deferred tax liability&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(177&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(139&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;


   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The change in the valuation allowance for deferred tax assets for the years ended &lt;em style="font: inherit;"&gt; December&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;31&lt;/em&gt; is as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Year&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Balance at January 1&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Charged to costs and expenses&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;(Deductions)/Other&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Balance at December 31&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;2021&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;15,971&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;(1,021&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;14,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2022&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;14,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;677&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;15,627&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;span style="background-color:#ffffff;"&gt;For the years ended &lt;/span&gt;&lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;&#160;and &lt;/span&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;span style="background-color:#ffffff;"&gt;, there were no exercises of stock options.&lt;/span&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;As required by ASC &lt;em style="font: inherit;"&gt;740,&lt;/em&gt; we recognize the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than &lt;em style="font: inherit;"&gt;not&lt;/em&gt; sustain the position following an audit. For tax positions meeting the more-likely-than-&lt;em style="font: inherit;"&gt;not&lt;/em&gt; threshold, the amount recognized in the financial statements is the largest benefit that has a greater than &lt;em style="font: inherit;"&gt;50%&lt;/em&gt; likelihood of being realized upon ultimate settlement with the relevant tax authority.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We recognize interest and penalties related to unrecognized tax benefits in income tax expense for all periods presented. There were no interest and penalties recognized in income tax expense during the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;. There were no unrecognized tax benefits as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;We are subject to taxation in the U.S., various states, and in non-U.S. jurisdictions. Our U.S. income tax returns are primarily subject to examination from &lt;em style="font: inherit;"&gt;2020&lt;/em&gt;&#160;through &lt;em style="font: inherit;"&gt;2022;&lt;/em&gt; however, U.S. tax authorities also have the ability to review prior tax years to the extent loss carryforwards and tax credit carryforwards are utilized. The open years for the non-U.S. tax returns range from&#160;&lt;em style="font: inherit;"&gt;2015&lt;/em&gt;&#160;through&#160;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&#160;based on local statutes.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt 7.2pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;Management periodically estimates our probable tax obligations using historical experience in tax jurisdictions and informed judgments. There are inherent uncertainties related to the interpretation of tax regulations in the jurisdictions in which we transact business. The judgments and estimates made at a point in time &lt;em style="font: inherit;"&gt; may &lt;/em&gt;change based on the outcome of tax audits, as well as changes to or further interpretations of regulations. If such changes take place, there is a risk that the tax rate &lt;em style="font: inherit;"&gt; may &lt;/em&gt;increase or decrease in any period. Tax accruals for tax liabilities related to potential changes in judgments and estimates for both federal and state tax issues are included in current liabilities on the consolidated balance sheet.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The investment in foreign subsidiaries other than Fuel Tech S.p.A (Chile) and Beijing Fuel Tech is considered to be indefinite in duration and therefore we have &lt;em style="font: inherit;"&gt;not&lt;/em&gt; provided a provision for deferred U.S.&#160;income taxes on the unremitted earnings from those subsidiaries. A provision has &lt;em style="font: inherit;"&gt;not&lt;/em&gt; been established because it is &lt;em style="font: inherit;"&gt;not&lt;/em&gt; practicable to determine the amount of unrecognized deferred tax liability for such unremitted foreign earnings and because it is our present intention to reinvest the undistributed earnings indefinitely.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;



    As required by ASC &lt;em style="font: inherit;"&gt;740,&lt;/em&gt; a valuation allowance must be established when it is more likely than &lt;em style="font: inherit;"&gt;not&lt;/em&gt; that all or a portion of a deferred tax asset will &lt;em style="font: inherit;"&gt;not&lt;/em&gt; be realized. We have approximately $28,227&#160;of U.S. net operating loss carryforwards available to offset future U.S. taxable income as of &lt;em style="font: inherit;"&gt; December 31, 2022.&#160; &lt;/em&gt;The net operating loss carry-forwards related to tax losses generated in years ending &lt;em style="font: inherit;"&gt; December 31, 2018&#160;&lt;/em&gt;and before in the U.S. totaling $10,733 begin to expire in &lt;em style="font: inherit;"&gt;2034.&lt;/em&gt; &#160;Further, we have tax loss carry-forwards of approximately $6,760 available to offset future foreign income in Italy as of &lt;em style="font: inherit;"&gt; December 31, 2022. &lt;/em&gt;We have recorded a full valuation allowance against the deferred tax asset because we cannot anticipate when or if this entity will have taxable income sufficient to utilize the net operating losses in the future. There is &lt;em style="font: inherit;"&gt;no&lt;/em&gt; expiration of the net operating loss carry-forwards related to tax losses generated in prior years in Italy. Finally, we have tax loss carry-forwards of approximately $13,684&#160;available to offset future foreign income in China as of &lt;em style="font: inherit;"&gt; December 31, 2022.&#160;&lt;/em&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;As of &lt;em style="font: inherit;"&gt; December 31, 2019, &lt;/em&gt;the investment in Fuel Tech S.p.A (Chile) was &lt;em style="font: inherit;"&gt;no&lt;/em&gt; longer considered to be indefinite and a provision for deferred U.S. income taxes was recorded. As of &lt;em style="font: inherit;"&gt; December 31, 2021, &lt;/em&gt;the provision for deferred U.S. income taxes related to the&#160;Fuel Tech S.p.A (Chile) investment was $136. As of &lt;em style="font: inherit;"&gt; December 31, 2022, &lt;/em&gt;Fuel Tech S.p.A (Chile) was still included in continuing operations.&#160;As a result an additional ($15) was recorded, adjusting the total consideration to $151. The deferred income taxes associated with this investment are offset by a valuation allowance of ($151).&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt;


  </us-gaap:IncomeTaxDisclosureTextBlock>
    <us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302393">
    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;Origin of income before taxes&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;United States&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(1,262&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;798&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Foreign&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(126&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(730&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Income (loss) before income taxes&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,388&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;68&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   </us-gaap:ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignTableTextBlock>
    <us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230802"
      unitRef="USD">-1262000</us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic>
    <us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230803"
      unitRef="USD">798000</us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic>
    <us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230804"
      unitRef="USD">-126000</us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign>
    <us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-4"
      id="c94230805"
      unitRef="USD">-730000</us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign>
    <us-gaap:ResultsOfOperationsIncomeBeforeIncomeTaxes
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230806"
      unitRef="USD">-1388000</us-gaap:ResultsOfOperationsIncomeBeforeIncomeTaxes>
    <us-gaap:ResultsOfOperationsIncomeBeforeIncomeTaxes
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230807"
      unitRef="USD">68000</us-gaap:ResultsOfOperationsIncomeBeforeIncomeTaxes>
    <us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302394">
    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Current:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Federal&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;State&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(6&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(9&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Foreign&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(10&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Total current&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(16&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(9&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Deferred:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Federal&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(19&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;State&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(19&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;(5&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Total deferred&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(38&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;(5&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Income tax expense&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(54&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(14&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   </us-gaap:ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock>
    <us-gaap:CurrentFederalTaxExpenseBenefit
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      id="c94230811"
      unitRef="USD">-0</us-gaap:CurrentFederalTaxExpenseBenefit>
    <us-gaap:CurrentFederalTaxExpenseBenefit
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230812"
      unitRef="USD">-0</us-gaap:CurrentFederalTaxExpenseBenefit>
    <us-gaap:CurrentStateAndLocalTaxExpenseBenefit
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230813"
      unitRef="USD">6000</us-gaap:CurrentStateAndLocalTaxExpenseBenefit>
    <us-gaap:CurrentStateAndLocalTaxExpenseBenefit
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230814"
      unitRef="USD">9000</us-gaap:CurrentStateAndLocalTaxExpenseBenefit>
    <us-gaap:CurrentForeignTaxExpenseBenefit
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-4"
      id="c94230815"
      unitRef="USD">10000</us-gaap:CurrentForeignTaxExpenseBenefit>
    <us-gaap:CurrentForeignTaxExpenseBenefit
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230816"
      unitRef="USD">-0</us-gaap:CurrentForeignTaxExpenseBenefit>
    <us-gaap:CurrentIncomeTaxExpenseBenefit
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230817"
      unitRef="USD">16000</us-gaap:CurrentIncomeTaxExpenseBenefit>
    <us-gaap:CurrentIncomeTaxExpenseBenefit
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230818"
      unitRef="USD">9000</us-gaap:CurrentIncomeTaxExpenseBenefit>
    <us-gaap:DeferredFederalIncomeTaxExpenseBenefit
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230820"
      unitRef="USD">19000</us-gaap:DeferredFederalIncomeTaxExpenseBenefit>
    <us-gaap:DeferredFederalIncomeTaxExpenseBenefit
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230821"
      unitRef="USD">-0</us-gaap:DeferredFederalIncomeTaxExpenseBenefit>
    <us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230822"
      unitRef="USD">19000</us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit>
    <us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230823"
      unitRef="USD">5000</us-gaap:DeferredStateAndLocalIncomeTaxExpenseBenefit>
    <us-gaap:DeferredIncomeTaxExpenseBenefit
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230824"
      unitRef="USD">38000</us-gaap:DeferredIncomeTaxExpenseBenefit>
    <us-gaap:DeferredIncomeTaxExpenseBenefit
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230825"
      unitRef="USD">5000</us-gaap:DeferredIncomeTaxExpenseBenefit>
    <us-gaap:IncomeTaxExpenseBenefit
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94230826"
      unitRef="USD">54000</us-gaap:IncomeTaxExpenseBenefit>
    <us-gaap:IncomeTaxExpenseBenefit
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94230827"
      unitRef="USD">14000</us-gaap:IncomeTaxExpenseBenefit>
    <us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302395">
    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Provision at the U.S. federal statutory rate&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;21.0&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;21.0&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;State taxes, net of federal benefit&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;3.1&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(15.5&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Foreign tax rate differential&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;0.4&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(30.2&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Valuation allowance&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(48.8&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(1504.6&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Chile outside basis differential&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;0.4&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;34.4&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;PPP Loan Forgiveness&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;(484.6&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Accrual to return&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;3.1&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;(329.3&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Research and development credit&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;5.9&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;(144.9&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;State rate change&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;9.5&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;(124.0&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;)%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;China deferred adjustment&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;1006.0&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding: 0; margin: 0"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;China enterprise tax&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Share based compensation&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;3.3&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;1590.3&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Other true up&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Intangible assets impairment and other non-deductibles&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Other&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1.8&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;2.0&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Income tax (expense) benefit effective rate&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(3.9&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)%&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;20.6&lt;/td&gt;&lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;%&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   </us-gaap:ScheduleOfEffectiveIncomeTaxRateReconciliationTableTextBlock>
    <us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
      contextRef="d_2022-01-01_2022-12-31"
      decimals="2"
      id="c94230830"
      unitRef="Pure">0.210</us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate>
    <us-gaap:EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
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&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Goodwill&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;182&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;591&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Royalty accruals&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;10&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;10&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Bad debt allowance&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;53&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;51&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Net operating loss carryforwards&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;12,158&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Credit carry-forwards&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1,058&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;992&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Inventory reserve&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;233&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;217&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Depreciation&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;585&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;556&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin-top: 0pt; margin-bottom: 0pt; text-indent: 18pt;"&gt;Research and Development Costs&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;528&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Other&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;471&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;376&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Total deferred tax assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;15,550&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;14,916&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Deferred tax liabilities:&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Intangible assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(100&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(105&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Total deferred tax liabilities&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(100&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(105&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Net deferred tax asset before valuation allowance&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;15,450&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;14,811&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 18pt;"&gt;Valuation allowances for deferred tax assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(15,627&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(14,950&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Net deferred tax liability&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(177&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(139&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   </us-gaap:ScheduleOfDeferredTaxAssetsAndLiabilitiesTableTextBlock>
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;4.&lt;/em&gt;&#160;&#160;&#160;&#160;&#160;COMMON STOCK&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, respectively, we had 31,272,303&#160;and 31,227,300&#160;shares of common stock issued and 30,296,297&#160;and 30,263,791&#160;outstanding, with an additional 6,715&#160;shares reserved for issuance upon conversion of the &lt;em style="font: inherit;"&gt;nil&lt;/em&gt; coupon non-redeemable convertible unsecured loan notes (see Note &lt;em style="font: inherit;"&gt;6&lt;/em&gt;). As of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, we had 5,600,676&#160;shares reserved for issuance upon the exercise or vesting of equity awards, of which 384,500&#160;are stock options that are currently exercisable (see Note &lt;em style="font: inherit;"&gt;8&lt;/em&gt;).&lt;/p&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;5.&lt;/em&gt;&#160;&#160;&#160;&#160;&#160;TREASURY STOCK&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Common stock held in treasury totaled 976,006&#160;and 963,509&#160;with a cost of $2,251&#160;and $2,234&#160;at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, respectively. These shares were withheld from employees to settle personal tax withholding obligations that arose as a result of restricted stock units that vested during the periods presented.&lt;/p&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;6.&lt;/em&gt;&lt;/b&gt;&#160;&#160;&#160;&#160;&#160;&lt;b&gt;&lt;em style="font: inherit;"&gt;NIL&lt;/em&gt; COUPON NON-REDEEMABLE CONVERTIBLE UNSECURED LOAN NOTES&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, we had a principal amount of $76 of &lt;span style="-sec-ix-hidden:c94230932"&gt;nil&lt;/span&gt; coupon non-redeemable convertible unsecured perpetual loan notes (Loan Notes) outstanding. The Loan Notes are convertible at any time into common stock at rates of $6.50 and $11.43 per share, depending on the note. As of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, the &lt;em style="font: inherit;"&gt;nil&lt;/em&gt; coupon loan notes were convertible into 6,715 shares of common stock. Based on our closing stock price of $1.27&#160;at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, the aggregate fair value of the common stock that the holders would receive if all the loan notes were converted would be approximately $9, which is less than the principal amount of the loans outstanding as of that date. The Loan Notes bear no interest and have &lt;em style="font: inherit;"&gt;no&lt;/em&gt; maturity date. They are repayable in the event of our dissolution and the holders do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; have the option to cash-settle the notes. Accordingly, they have been classified within stockholders&#x2019; equity in the accompanying balance sheets. The notes do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; hold distribution or voting rights unless and until converted into common stock.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;For the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, there were no Loan Notes repurchased by the Company.&lt;/p&gt;
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    <ftek:WarrantsDisclosureTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302401">
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;7.&lt;/em&gt; WARRANTS&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;On &lt;em style="font: inherit;"&gt; February 11, 2021, &lt;/em&gt;Fuel Tech entered into a securities purchase agreement&#160;to issue and sell, in a private placement, 5,000,000 shares of common stock&#160;and 2,500,000 warrants exercisable for a total of 2,500,000 shares of common stock with an exercise price of $5.10 per Warrant Share, at a purchase price of $5.1625 per Share and associated warrant. The gross proceeds to the Company from the Private Placement were&#160;$25,812, before deducting placement agent fees and offering expenses of $1,783. Subject to certain ownership limitations, the Warrants are immediately exercisable upon issuance and expire on the &lt;span style="-sec-ix-hidden:c94230954"&gt;five&lt;/span&gt;&#160;and &lt;em style="font: inherit;"&gt;one&lt;/em&gt;-half year anniversary of the effective date of the registration statement registering the Warrant Shares for resale.&#160; In addition, the Company issued to the placement agent Warrants to purchase up to 350,000 shares of common stock.&#160; The Placement Agent Warrants are exercisable at an exercise price of $6.45&#160;per share of common stock and expire on the &lt;span style="-sec-ix-hidden:c94230958"&gt;five&lt;/span&gt;&#160;and &lt;em style="font: inherit;"&gt;one&lt;/em&gt;-half year anniversary of the effective date of the registration statement registering the Shares and the Warrant Shares for resale.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;Fuel Tech uses the Black-Scholes option pricing model to estimate the grant date fair value of the warrants. The principal variable assumptions utilized in valuing warrants and the methodology for estimating such model inputs are: (&lt;em style="font: inherit;"&gt;1&lt;/em&gt;)&#160;risk-free interest rate of 0.59%, an estimate based on the yield of zero&#x2013;coupon treasury securities with a maturity equal to the expected life of the warrant; (&lt;em style="font: inherit;"&gt;2&lt;/em&gt;)&#160;expected volatility of 94.66% &#x2013; an estimate based on the historical volatility of Fuel Tech&#x2019;s common stock for a period equal to the expected life of the warrant; and (&lt;em style="font: inherit;"&gt;3&lt;/em&gt;)&#160;expected life of the warrant of &lt;span style="-sec-ix-hidden:c94230965"&gt;five&lt;/span&gt; and &lt;em style="font: inherit;"&gt;one&lt;/em&gt;-half years based on the term of the warrant.&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;The calculated fair value allocated to the warrants is $7,337.&#160; This amount has been recorded as Additional paid in capital - warrants and is shown net in the Additional paid in capital line of the consolidated balance sheets.&#160;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;The issuance of warrants to purchase shares of the Company's common stock are summarized as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Shares&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Outstanding as of December 31, 2021&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;2,850,000&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Granted&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Exercised&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Outstanding as of December 31, 2022&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;2,850,000&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;The following table summarizes information about warrants outstanding and exercisable at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Number&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Weighted-Average&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Outstanding/&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Remaining Life&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Weighted-Average&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td colspan="2" style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;em style="font: inherit;"&gt;Range of Exercise Price&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Exercisable&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;in Years&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Exercise Price&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&lt;em style="font: inherit;"&gt;5.10&lt;/em&gt;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;2,500,000&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3.62&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;5.10&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&lt;em style="font: inherit;"&gt;6.45&lt;/em&gt;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;350,000&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3.62&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;6.45&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
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      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;2,850,000&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;
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    <us-gaap:StockIssuedDuringPeriodSharesNewIssues
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      contextRef="i_2021-02-11_MeasurementInputTypeAxis-MeasurementInputPriceVolatilityMember"
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    <us-gaap:WarrantsAndRightsOutstanding
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    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Shares&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
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      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Outstanding as of December 31, 2021&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;2,850,000&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
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      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Granted&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
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      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Exercised&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0); text-align: right;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
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      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Outstanding as of December 31, 2022&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;2,850,000&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
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       &lt;td style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
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       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
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       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Outstanding/&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Remaining Life&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Weighted-Average&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td colspan="2" style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;em style="font: inherit;"&gt;Range of Exercise Price&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Exercisable&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;in Years&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Exercise Price&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&lt;em style="font: inherit;"&gt;5.10&lt;/em&gt;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;2,500,000&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3.62&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;5.10&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&lt;em style="font: inherit;"&gt;6.45&lt;/em&gt;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;350,000&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3.62&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;6.45&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;2,850,000&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;
   </us-gaap:ScheduleOfStockholdersEquityNoteWarrantsOrRightsTextBlock>
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;8.&lt;/em&gt;&#160;&#160;&#160;&#160;&#160;STOCK-BASED COMPENSATION&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Under our stock-based employee compensation plan, referred to as the Fuel Tech, Inc. &lt;em style="font: inherit;"&gt;2014&lt;/em&gt; Long-Term Incentive Plan (Incentive Plan), awards &lt;em style="font: inherit;"&gt; may &lt;/em&gt;be granted to participants in the form of Non-Qualified Stock Options, Incentive Stock Options, Stock Appreciation Rights, Restricted Stock, RSUs, Performance Awards, Bonuses or other forms of share-based or non-share-based awards or combinations thereof. Participants in the Incentive Plan &lt;em style="font: inherit;"&gt; may &lt;/em&gt;be our directors, officers, employees, consultants or advisors (except consultants or advisors in capital-raising transactions) as the directors determine are key to the success of our business. There are a maximum of 5,600,676&#160;shares that &lt;em style="font: inherit;"&gt; may &lt;/em&gt;be issued or reserved for awards to participants under the Incentive Plan. At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, we had 1,899,250&#160;equity awards available for issuance under the Incentive Plan.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We did &lt;span style="-sec-ix-hidden:c94231001"&gt;&lt;span style="-sec-ix-hidden:c94232765"&gt;not&lt;/span&gt;&lt;/span&gt; record any excess tax benefits within income tax expense for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;. Given the Company has a full valuation allowance on its deferred tax assets, there were &lt;em style="font: inherit;"&gt;no&lt;/em&gt; excess tax benefits to record. In addition, we account for forfeitures of awards based on an estimate of the number of awards expected to be forfeited and adjusting the estimate when it is &lt;em style="font: inherit;"&gt;no&lt;/em&gt; longer probable that the employee will fulfill the service condition.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;


   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Stock-based compensation is included in selling, general and administrative costs in our consolidated statements of operations. The components of stock-based compensation from continuing operations for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&#160;were as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;For the Year Ended December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Stock options and restricted stock units, net of forfeitures&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;224&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;82&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;After-tax effect of stock based compensation&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;224&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;82&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Stock Options&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The stock options granted to employees under the Incentive Plan have a 10-year life and they vest as follows: 50% after the &lt;em style="font: inherit;"&gt;second&lt;/em&gt; anniversary of the award date, 25% after the &lt;em style="font: inherit;"&gt;third&lt;/em&gt; anniversary, and the final 25% after the &lt;em style="font: inherit;"&gt;fourth&lt;/em&gt; anniversary of the award date. Fuel Tech calculates stock compensation expense for employee option awards based on the grant date fair value of the award, less expected annual forfeitures, and recognizes expense on a straight-line basis over the &lt;em style="font: inherit;"&gt;four&lt;/em&gt;-year service period of the award. Stock options granted to members of our Board of Directors vest immediately. Stock compensation for these awards is based on the grant date fair value of the award and is recognized in expense immediately.&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Fuel Tech uses the Black-Scholes option pricing model to estimate the grant date fair value of employee stock options. The principal variable assumptions utilized in valuing options and the methodology for estimating such model inputs include: (&lt;em style="font: inherit;"&gt;1&lt;/em&gt;)&#160;risk-free interest rate &#x2013; an estimate based on the yield of zero&#x2013;coupon treasury securities with a maturity equal to the expected life of the option; (&lt;em style="font: inherit;"&gt;2&lt;/em&gt;)&#160;expected volatility &#x2013; an estimate based on the historical volatility of Fuel Tech&#x2019;s common stock for a period equal to the expected life of the option; and (&lt;em style="font: inherit;"&gt;3&lt;/em&gt;)&#160;expected life of the option &#x2013; an estimate based on historical experience including the effect of employee terminations.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;There were no stock options granted during the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The following table presents a summary of our stock option activity and related information for the years ended &lt;em style="font: inherit;"&gt; December&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;31:&lt;/em&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Number of Options&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Weighted-Average Exercise Price&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Number of Options&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Weighted-Average Exercise Price&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Outstanding at beginning of year&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;434,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3.05&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;484,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3.57&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Granted&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Exercised&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Expired or forfeited&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(50,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;3.55&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(50,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;8.16&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Outstanding at end of year&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;384,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;2.98&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;434,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;3.05&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Exercisable at end of year&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;384,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;2.98&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;434,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;3.05&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Weighted-Average Remaining Contractual Life (years)&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;2.43&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3.08&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Aggregate Intrinsic Value&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;27&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;38&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The aggregate intrinsic value in the preceding table represents the total pretax intrinsic value, based on our closing stock price of $1.27&#160;as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, which would have been received by the option holders had those options holders exercised their stock options as of that date.&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The following table summarizes information about stock options outstanding at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td colspan="12" style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"&gt;&lt;b&gt;Options Outstanding and Exercisable&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 25%; border-bottom: thin solid rgb(0, 0, 0);"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;&lt;b&gt;Range of Exercise Prices&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;b&gt;Number of Options&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;b&gt;Weighted-Average Remaining Contractual Life (years)&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;b&gt;Weighted-Average Exercise Price&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"&gt;$0.96 - $1.27&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232766"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232767"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;88,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"&gt;4.9&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;0.97&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"&gt;$1.28 - $2.01&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232771"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232772"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;27,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"&gt;3.4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1.58&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin-top: 0pt; margin-bottom: 0pt; text-align: center;"&gt;$2.02 - $3.15&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&lt;span style="-sec-ix-hidden:c94232776"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&lt;span style="-sec-ix-hidden:c94232777"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;105,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; text-align: center; padding: 0; margin: 0"&gt;2.4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;2.44&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"&gt;$3.16 - $4.54&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232781"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232782"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;70,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"&gt;0.4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3.85&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"&gt;$4.55 - $5.22&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&lt;span style="-sec-ix-hidden:c94232786"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;span style="-sec-ix-hidden:c94232787"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;94,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"&gt;1.4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;5.22&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;384,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"&gt;2.4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2.98&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;As of and for the &lt;em style="font: inherit;"&gt; 12 months ended&lt;/em&gt; &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, there was &lt;em style="font: inherit;"&gt;no&lt;/em&gt; non-vested stock option activity and no total unrecognized compensation cost related to non-vested stock options granted under the Incentive Plan. Fuel Tech received no proceeds from the exercise of stock options in the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;. It is our policy to issue new shares upon option exercises, loan conversions, and vesting of restricted stock units. We have &lt;em style="font: inherit;"&gt;not&lt;/em&gt; used cash and do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; anticipate any future use of cash to settle equity instruments granted under share-based payment arrangements.&#160;Shares received for exercise of stock options come from newly issued shares.&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Restricted Stock Units&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;RSUs&#160;granted to employees vest over time based on continued service (typically vesting over a period between &lt;span style="-sec-ix-hidden:c94231030"&gt;two&lt;/span&gt; and &lt;span style="-sec-ix-hidden:c94231031"&gt;four&lt;/span&gt; years), and RSUs granted to directors vest after a &lt;em style="font: inherit;"&gt;one&lt;/em&gt; year vesting period based on continued service. Such time-vested RSUs are valued at the date of grant using the intrinsic value method based on the closing price of the common stock on the grant date. Compensation cost, adjusted for estimated forfeitures, is amortized on a straight-line basis over the requisite service period.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;


   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;During the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, there were 45,003&#160;and 50,002&#160;restricted stock units that vested with a grant date fair value of $68&#160;and $75, respectively.&#160;As of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, there was $738&#160;of total unrecognized compensation cost related to all non-vested share-based compensation arrangements granted under the Incentive Plan. That cost is expected to be recognized over the remaining requisite service period of 2.4&#160;years.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;A summary of restricted stock unit activity for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt; is as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;Shares&lt;/em&gt;&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;Weighted Average Grant Date Fair Value&lt;/em&gt;&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Unvested restricted stock units at December 31, 2020&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;100,005&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1.50&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Forfeited&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(5,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;0.97&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Vested&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(50,002&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1.50&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Unvested restricted stock units at December 31, 2021&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;45,003&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1.51&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin-top: 0pt; margin-bottom: 0pt"&gt;Granted&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;807,048&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;1.32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Forfeited&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(40,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1.32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Vested&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(45,003&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1.51&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Unvested restricted stock units at December 31, 2022&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;767,048&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1.32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;Deferred Directors Fees&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;In addition to the Incentive Plan, Fuel Tech has a Deferred Compensation Plan for Directors (Deferred Plan). Under the terms of the Deferred Plan, Directors can elect to defer Directors&#x2019; fees for shares of Fuel Tech common stock that are issuable at a future date as defined in the agreement. In accordance with ASC &lt;em style="font: inherit;"&gt;718,&lt;/em&gt; Fuel Tech accounts for these awards as equity awards as opposed to liability awards. In &lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&#160;and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;, there was no stock-based compensation expense under the Deferred Plan.&lt;/p&gt;
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    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;For the Year Ended December 31,&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Stock options and restricted stock units, net of forfeitures&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;224&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;82&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;After-tax effect of stock based compensation&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;224&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;82&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Number of Options&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Weighted-Average Exercise Price&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;Number of Options&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;Weighted-Average Exercise Price&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Outstanding at beginning of year&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;434,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3.05&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;484,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3.57&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;Granted&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Exercised&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;&#x2014;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Expired or forfeited&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(50,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;3.55&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(50,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;8.16&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Outstanding at end of year&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;384,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;2.98&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;434,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;3.05&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Exercisable at end of year&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;384,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;2.98&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;434,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;3.05&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Weighted-Average Remaining Contractual Life (years)&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;2.43&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3.08&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Aggregate Intrinsic Value&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;27&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;38&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td colspan="12" style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"&gt;&lt;b&gt;Options Outstanding and Exercisable&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 25%; border-bottom: thin solid rgb(0, 0, 0);"&gt; &lt;p style="margin: 0pt; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif;"&gt;&lt;b&gt;Range of Exercise Prices&lt;/b&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;b&gt;Number of Options&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;b&gt;Weighted-Average Remaining Contractual Life (years)&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;b&gt;Weighted-Average Exercise Price&lt;/b&gt;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"&gt;$0.96 - $1.27&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232766"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232767"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;88,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"&gt;4.9&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;0.97&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"&gt;$1.28 - $2.01&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232771"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232772"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;27,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"&gt;3.4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1.58&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin-top: 0pt; margin-bottom: 0pt; text-align: center;"&gt;$2.02 - $3.15&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&lt;span style="-sec-ix-hidden:c94232776"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&lt;span style="-sec-ix-hidden:c94232777"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;105,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; text-align: center; padding: 0; margin: 0"&gt;2.4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;2.44&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"&gt;$3.16 - $4.54&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232781"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&lt;span style="-sec-ix-hidden:c94232782"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;70,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"&gt;0.4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3.85&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: center;"&gt;$4.55 - $5.22&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&lt;span style="-sec-ix-hidden:c94232786"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;span style="-sec-ix-hidden:c94232787"&gt;&#160;&lt;/span&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;94,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"&gt;1.4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;5.22&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;&#160;&lt;/em&gt;&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;384,500&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 22%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; text-align: center;"&gt;2.4&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 22%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;2.98&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Forfeited&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(5,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;0.97&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Vested&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(50,002&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1.50&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Unvested restricted stock units at December 31, 2021&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;45,003&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1.51&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt; &lt;p style="margin-top: 0pt; margin-bottom: 0pt"&gt;Granted&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;807,048&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;1.32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding: 0; margin: 0"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Forfeited&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(40,000&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1.32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Vested&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(45,003&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;1.51&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Unvested restricted stock units at December 31, 2022&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;767,048&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;1.32&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;span style="background-color:#ffffff;"&gt;During the &lt;em style="font: inherit;"&gt;third&lt;/em&gt; quarter of &lt;em style="font: inherit;"&gt;2020,&lt;/em&gt; the Company was notified of an equipment component failure at a foreign customer location.&#160;The failure&#160;was remedied under the warranty provision of&#160;the contracts&#160;that was in place with the customer and supplier and was completed in the &lt;em style="font: inherit;"&gt;third&lt;/em&gt; quarter of &lt;em style="font: inherit;"&gt;2021.&lt;/em&gt;&#160;As of &lt;em style="font: inherit;"&gt; December 31, 2022 &lt;/em&gt;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt; no charges were recorded in the other accrued liabilities line of the Consolidated Balance Sheets. &lt;/span&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;


   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Performance Guarantees&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The majority of Fuel Tech&#x2019;s long-term equipment construction contracts contain language guaranteeing that the performance of the system that is being sold to the customer will meet specific criteria. On occasion, performance surety bonds and bank performance guarantees/letters of credit are issued to the customer in support of the construction contracts as follows:&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:18pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;"&gt;in support of the warranty period defined in the contract; or&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;&lt;tbody&gt;&lt;tr&gt;&lt;td style="width:18pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;&lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: left; font-size: 10pt;"&gt;in support of the system performance criteria that are defined in the contract.&lt;/p&gt; &lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;As of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, we had outstanding bank performance guarantees and letters of credit in the amount of $689&#160;in support of equipment construction contracts that have &lt;em style="font: inherit;"&gt;not&lt;/em&gt; completed their final acceptance test or that are still operating under a warranty period. The performance guarantees and letters of credit expire in dates ranging from &lt;em style="font: inherit;"&gt; June 2023 &lt;/em&gt;through &lt;em style="font: inherit;"&gt; December 2024. &lt;/em&gt;The expiration dates &lt;em style="font: inherit;"&gt; may &lt;/em&gt;be extended if the project completion dates are extended. Our management believes it is probable that these projects will be successfully completed and that there will &lt;em style="font: inherit;"&gt;not&lt;/em&gt; be a material adverse impact on our operations from these bank performance guarantees and letters of credit. As a result, no liability has been recorded for these performance guarantees.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&lt;b&gt;Product Warranties&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Fuel Tech&#160;issues a standard product warranty with the sale of our products to customers. Our recognition of warranty liability is based primarily on analyses of warranty claims experience in the preceding years as the nature of our historical product sales for which we offer a warranty are substantially unchanged. This approach provides an aggregate warranty accrual that is historically aligned with actual warranty claims experienced. There was no change&#160;in the warranty liability included in the Other accrued liabilities line of the Consolidated Balance Sheet in &lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&#160;and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;. The warranty liability balance was $159 at &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and&#160;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt;
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;10.&lt;/em&gt;&#160;&#160;&#160;&#160;&#160;LEASES&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&#160;&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;The terms of the Company&#x2019;s &lt;em style="font: inherit;"&gt;three&lt;/em&gt;&#160;primary office space lease arrangements are as follows:&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;
    &lt;tbody&gt;
     &lt;tr&gt;
      &lt;td style="width:38pt;"&gt;&#160;&lt;/td&gt;
      &lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;
      &lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;The Gallarate, Italy building lease, for approximately 1,335&#160;square feet, runs through &lt;em style="font: inherit;"&gt; April&#160;&lt;/em&gt;&lt;em style="font: inherit;"&gt;30,&lt;/em&gt; &lt;em style="font: inherit;"&gt;2025.&lt;/em&gt; This facility serves as the operating headquarters for our European operations.&lt;/p&gt; &lt;/td&gt;
     &lt;/tr&gt;

    &lt;/tbody&gt;
   &lt;/table&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;
    &lt;tbody&gt;
     &lt;tr&gt;
      &lt;td style="width:38pt;"&gt;&#160;&lt;/td&gt;
      &lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;
      &lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;The Aurora, IL warehouse lease, for approximately 11,000 square feet, runs through &lt;em style="font: inherit;"&gt; December 31, 2023. &lt;/em&gt;This facility serves as an outside warehouse facility.&#160;&lt;/p&gt; &lt;/td&gt;
     &lt;/tr&gt;

    &lt;/tbody&gt;
   &lt;/table&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;
    &lt;tbody&gt;
     &lt;tr&gt;
      &lt;td style="width:38pt;"&gt;&#160;&lt;/td&gt;
      &lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;
      &lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;The Overland Park, KS lease, for approximately 600 square feet, runs through &lt;em style="font: inherit;"&gt; October 15, 2024. &lt;/em&gt;This facility serves primarily as a sales office.&lt;/p&gt; &lt;/td&gt;
     &lt;/tr&gt;

    &lt;/tbody&gt;
   &lt;/table&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The Company also has &lt;span style="-sec-ix-hidden:c94231185"&gt;three&lt;/span&gt; additional operating leases related to certain office equipment and company leased vehicles and &lt;em style="font: inherit;"&gt;one&lt;/em&gt; short-term lease. Our leases have remaining lease terms of 1.0&#160;years to 2.4&#160;years. Our leases do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; contain any material residual value guarantees or material restricted covenants and we currently have &lt;em style="font: inherit;"&gt;no&lt;/em&gt; material sublease arrangements. We have &lt;em style="font: inherit;"&gt;no&lt;/em&gt; financing leases as defined under ASC &lt;em style="font: inherit;"&gt;842.&lt;/em&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;Total operating lease expense for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;is as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0); text-align: center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0); text-align: center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Operating lease cost&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;176&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;198&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Short-term lease cost&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;29&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;21&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Total lease cost&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;205&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;219&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The weighted average remaining lease term was 1.77&#160;years as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;. The weighted average discount rate was 4.48%&#160;as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;.&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;Remaining maturities of our existing lease liabilities as of &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; were as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 85%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Year Ending December 31,&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Operating Leases&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2023&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;149&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2024&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;61&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2025&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;13&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Thereafter&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total lease payments&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;223&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Less imputed interest&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(32&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;191&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;The following is the balance sheet classification of our existing lease liabilities:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Operating lease liabilities - current&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;125&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;113&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Operating lease liabilities - non-current&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;66&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;122&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total operating lease liabilities&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;191&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;235&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;


   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;Supplemental cash flow information related to leases was as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;For the Twelve Months ended December 31, 2022&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;For the twelve months ended December 31, 2021&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Cash paid for amounts included in the measurement of lease liabilities&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;157&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;178&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Leased assets obtained in exchange for operating lease liabilities&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;139&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;158&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

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    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0); text-align: center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: thin solid rgb(0, 0, 0); text-align: center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Operating lease cost&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;176&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;198&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Short-term lease cost&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;29&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;21&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Total lease cost&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;205&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;219&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;
   </us-gaap:LeaseCostTableTextBlock>
    <us-gaap:OperatingLeaseCost
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94231198"
      unitRef="USD">176000</us-gaap:OperatingLeaseCost>
    <us-gaap:OperatingLeaseCost
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94231199"
      unitRef="USD">198000</us-gaap:OperatingLeaseCost>
    <us-gaap:ShortTermLeaseCost
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94231200"
      unitRef="USD">29000</us-gaap:ShortTermLeaseCost>
    <us-gaap:ShortTermLeaseCost
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94231201"
      unitRef="USD">21000</us-gaap:ShortTermLeaseCost>
    <us-gaap:LeaseCost
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94231202"
      unitRef="USD">205000</us-gaap:LeaseCost>
    <us-gaap:LeaseCost
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94231203"
      unitRef="USD">219000</us-gaap:LeaseCost>
    <us-gaap:OperatingLeaseWeightedAverageRemainingLeaseTerm1 contextRef="i_2022-12-31" id="c94231193">P1Y9M7D</us-gaap:OperatingLeaseWeightedAverageRemainingLeaseTerm1>
    <us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent
      contextRef="i_2022-12-31"
      decimals="4"
      id="c94231194"
      unitRef="Pure">0.0448</us-gaap:OperatingLeaseWeightedAverageDiscountRatePercent>
    <us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302412">
    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 85%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Year Ending December 31,&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Operating Leases&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2023&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;149&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2024&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;61&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;2025&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;13&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Thereafter&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total lease payments&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;223&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Less imputed interest&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(32&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Total&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;191&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;
   </us-gaap:LesseeOperatingLeaseLiabilityMaturityTableTextBlock>
    <us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231205"
      unitRef="USD">149000</us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths>
    <us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231206"
      unitRef="USD">61000</us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearTwo>
    <us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231207"
      unitRef="USD">13000</us-gaap:LesseeOperatingLeaseLiabilityPaymentsDueYearThree>
    <ftek:LesseeOperatingLeaseLiabilityToBePaidAfterYearThree
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231208"
      unitRef="USD">0</ftek:LesseeOperatingLeaseLiabilityToBePaidAfterYearThree>
    <us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231209"
      unitRef="USD">223000</us-gaap:LesseeOperatingLeaseLiabilityPaymentsDue>
    <us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231210"
      unitRef="USD">32000</us-gaap:LesseeOperatingLeaseLiabilityUndiscountedExcessAmount>
    <us-gaap:OperatingLeaseLiability
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231211"
      unitRef="USD">191000</us-gaap:OperatingLeaseLiability>
    <ftek:OperatingLeaseLiabilitiesTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302413">
    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Operating lease liabilities - current&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;125&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;113&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Operating lease liabilities - non-current&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;66&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;122&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total operating lease liabilities&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;191&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;235&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
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     &lt;/tbody&gt;
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    <us-gaap:OperatingLeaseLiabilityCurrent
      contextRef="i_2022-12-31"
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      id="c94231214"
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    <us-gaap:OperatingLeaseLiabilityCurrent
      contextRef="i_2021-12-31"
      decimals="-3"
      id="c94231215"
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    <us-gaap:OperatingLeaseLiabilityNoncurrent
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231216"
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    <us-gaap:OperatingLeaseLiabilityNoncurrent
      contextRef="i_2021-12-31"
      decimals="-3"
      id="c94231217"
      unitRef="USD">122000</us-gaap:OperatingLeaseLiabilityNoncurrent>
    <us-gaap:OperatingLeaseLiability
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231218"
      unitRef="USD">191000</us-gaap:OperatingLeaseLiability>
    <us-gaap:OperatingLeaseLiability
      contextRef="i_2021-12-31"
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      id="c94231219"
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    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;
     &lt;tbody&gt;
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       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;For the Twelve Months ended December 31, 2022&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&lt;em style="font: inherit;"&gt;For the twelve months ended December 31, 2021&lt;/em&gt;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
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       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;157&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;178&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
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      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Leased assets obtained in exchange for operating lease liabilities&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;139&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;158&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
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    <us-gaap:OperatingLeasePayments
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      unitRef="USD">157000</us-gaap:OperatingLeasePayments>
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      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94231223"
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      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94231224"
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      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
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    <us-gaap:DebtDisclosureTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302415">
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;11.&lt;/em&gt;&#160;&#160;&#160;&#160;&#160;DEBT FINANCING&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;On &lt;em style="font: inherit;"&gt; June 30, 2022, &lt;/em&gt;the Company entered into an Investment Collateral Security agreement&#160;to use for the sole purpose of issuing standby letters of credit that replaces the former Cash Collateral agreement with BMO Harris. The Investment Collateral Security agreement requires us to pledge our investments as collateral for 150% of the aggregate face amount of outstanding standby letters of credit. The Company pays 250 basis points on the face values of outstanding letters of credit. There are &lt;em style="font: inherit;"&gt;no&lt;/em&gt; financial covenants set forth in the Investment Collateral Security agreement. At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, the Company had outstanding standby letters of credit totaling approximately $689&#160;under the Investment Collateral Security agreement. At &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;, the investments held as collateral totaled $1,034. Fuel Tech is committed to reimbursing the issuing bank for any payments made by the bank under these instruments.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;On &lt;em style="font: inherit;"&gt; April 17, 2020, &lt;/em&gt;the Company received $1,556 in loan proceeds from the Paycheck Protection Program (PPP), established pursuant to the Coronavirus Aid, Relief, and Economic Security Act&#160;and administered by the U.S. Small Business Administration (SBA). The unsecured loan is evidenced by a promissory note of the Company dated &lt;em style="font: inherit;"&gt; April 15, 2020&#160;&lt;/em&gt;in the principal amount of $1,556, issued to BMO Harris Bank N.A., the lender.&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;On &lt;em style="font: inherit;"&gt; January 8, 2021, &lt;/em&gt;the Company received full forgiveness from the SBA for the entire balance of loan proceeds used to&#160;fund its qualified payroll&#160;expenses. The Company accounted for the PPP Loan as debt in accordance with ASC&#160;&lt;em style="font: inherit;"&gt;470,&lt;/em&gt; Debt and accrued&#160;interest in accordance with the interest method under ASC &lt;em style="font: inherit;"&gt;835&lt;/em&gt;-&lt;em style="font: inherit;"&gt;30.&lt;/em&gt;&#160; When the loan was forgiven,&#160;the Company reduced the non-current liability by the amount forgiven&#160;and recorded other income&#160;in the Consolidated Statements of Operations. The SBA has the right to audit the loan forgiveness for &lt;em style="font: inherit;"&gt;6&lt;/em&gt; years after the date the loan was forgiven.&#160;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt; text-align: justify;"&gt;&lt;b&gt;&#160;&#160;&#160;&lt;/b&gt;&lt;/p&gt;
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    <ftek:PercentageOfFaceAmountOfLettersOfCreditAsCollateral
      contextRef="d_2022-06-30_2022-06-30"
      decimals="1"
      id="c94231227"
      unitRef="Pure">1.50</ftek:PercentageOfFaceAmountOfLettersOfCreditAsCollateral>
    <ftek:PaymentBasisPointsOnFaceValueOfLettersOfCredit
      contextRef="d_2022-06-30_2022-06-30"
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      id="c94231228"
      unitRef="Pure">0.0250</ftek:PaymentBasisPointsOnFaceValueOfLettersOfCredit>
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      id="c94231230"
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      contextRef="i_2022-12-31_PledgedStatusAxis-AssetPledgedAsCollateralMember"
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      id="c94231231"
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      contextRef="d_2020-04-17_2020-04-17_DebtInstrumentAxis-PaycheckProtectionProgramCaresActMember"
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      id="c94231232"
      unitRef="USD">1556000</us-gaap:ProceedsFromIssuanceOfLongTermDebt>
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      contextRef="d_2021-01-08_2021-01-08_DebtInstrumentAxis-PaycheckProtectionProgramCaresActMember"
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      id="c94231233"
      unitRef="USD">1556000</us-gaap:DebtInstrumentDecreaseForgiveness>
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   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;12.&lt;/em&gt;&#160;&#160;&#160;&#160;&#160;BUSINESS SEGMENT AND&#160;GEOGRAPHIC FINANCIAL DATA&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;Business Segment Financial Data&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;We segregate our financial results into two reportable segments representing &lt;em style="font: inherit;"&gt;two&lt;/em&gt; broad technology segments as follows:&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;
    &lt;tbody&gt;
     &lt;tr&gt;
      &lt;td style="width:38pt;"&gt;&#160;&lt;/td&gt;
      &lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;
      &lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;The Air Pollution Control technology segment includes technologies to reduce NOx emissions in flue gas generated by the firing of natural gas or coal from boilers, incinerators, furnaces and other stationary combustion sources. These include Over Fire Air systems, NOxOUT&lt;sup style="vertical-align:top;line-height:120%;font-size:pt"&gt;&#xae;&lt;/sup&gt; and HERT&#x2122; Selective Non-Catalytic Reduction&#160;systems, and Selective Catalytic Reduction (SCR) systems. Our SCR systems can also include Ammonia Injection Grid, and GSG&#x2122; Graduated Straightening Grid systems to provide high NOx reductions at significantly lower capital and operating costs than conventional SCR systems. ULTRA&lt;sup style="vertical-align:top;line-height:120%;font-size:pt"&gt;&#xae;&lt;/sup&gt; technology creates ammonia at a plant site using safe urea for use with any SCR application. ESP technologies make use of electrostatic precipitator products and services to reduce particulate matter. FGC systems are chemical injection systems offered in markets outside the U.S. and Canada to enhance electrostatic precipitator and fabric filter performance in controlling particulate emissions.&lt;/p&gt; &lt;/td&gt;
     &lt;/tr&gt;

    &lt;/tbody&gt;
   &lt;/table&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;table border="0" cellpadding="0" cellspacing="0" style="width:100%;font-family:'Times New Roman', Times, serif;font-size:10pt;"&gt;
    &lt;tbody&gt;
     &lt;tr&gt;
      &lt;td style="width:38pt;"&gt;&#160;&lt;/td&gt;
      &lt;td style="width:18pt;vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;&#x2022;&lt;/p&gt; &lt;/td&gt;
      &lt;td style="vertical-align:top;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; margin: 0pt; text-align: justify; font-size: 10pt;"&gt;The FUEL CHEM&lt;sup style="vertical-align:top;line-height:120%;font-size:pt"&gt;&#xae;&lt;/sup&gt; technology segment, which uses chemical processes in combination with advanced CFD and CKM boiler modeling, for the control of slagging, fouling, corrosion, opacity and other sulfur trioxide-related issues in coal-fired furnaces and boilers through the addition of chemicals into the furnace using TIFI&lt;sup style="vertical-align:top;line-height:120%;font-size:pt"&gt;&#xae;&lt;/sup&gt; Targeted In-Furnace Injection&#x2122; technology.&lt;/p&gt; &lt;/td&gt;
     &lt;/tr&gt;

    &lt;/tbody&gt;
   &lt;/table&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The &#x201c;Other&#x201d; classification includes those profit and loss items &lt;em style="font: inherit;"&gt;not&lt;/em&gt; allocated to either reportable segment. There are &lt;em style="font: inherit;"&gt;no&lt;/em&gt; inter-segment sales that require elimination.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;We evaluate performance and allocate resources based on gross margin by reportable segment. The accounting policies of the reportable segments are the same as those described in the summary of significant accounting policies. We do &lt;em style="font: inherit;"&gt;not&lt;/em&gt; review assets by reportable segment, but rather, in aggregate for the Company as a whole.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;Information about reporting segment net sales and gross margin from continuing operations are provided below:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;For the year ended December 31, 2022&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Air Pollution Control Segment&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;FUEL CHEM Segment&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Other&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Total&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Revenues from external customers&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;10,597&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;16,344&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;26,941&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Cost of sales&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(6,924&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(8,374&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(15,298&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Gross margin&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,673&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;7,970&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,643&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Selling, general and administrative&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(12,275&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(12,275&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Research and development&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(895&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(895&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Operating income (loss) from continuing operations&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;3,673&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;7,970&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(13,170&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,527&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;



    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;For the year ended December 31, 2021&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Air Pollution Control Segment&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;FUEL CHEM Segment&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Other&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Total&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Revenues from external customers&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;6,896&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;17,365&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;24,261&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Cost of sales&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(3,529&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(8,834&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(12,363&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Gross margin&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,367&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;8,531&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,898&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Selling, general and administrative&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(12,055&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(12,055&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Research and development&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1,332&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1,332&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Operating income (loss) from continuing operations&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;3,367&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;8,531&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(13,387&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,489&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

   &lt;p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: 'Times New Roman', Times, serif; font-size: 10pt; margin: 0pt; text-align: left"&gt;&lt;b&gt;Geographic Segment Financial Data&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;Information concerning our operations by geographic area is provided below. Revenues are attributed to countries based on the location of the end-user. Assets are those directly associated with operations of the geographic area.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: Times New Roman; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;For the years ended December 31,&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Revenues:&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;United States&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;20,311&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;19,515&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Foreign&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;6,630&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;4,746&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;26,941&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;24,261&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;As of December 31,&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Assets:&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;United States&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;47,007&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;46,271&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Foreign&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;3,117&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;3,703&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;50,124&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;49,974&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

  </us-gaap:SegmentReportingDisclosureTextBlock>
    <us-gaap:NumberOfReportableSegments
      contextRef="d_2022-01-01_2022-12-31"
      decimals="INF"
      id="c94231240"
      unitRef="Pure">2</us-gaap:NumberOfReportableSegments>
    <us-gaap:ScheduleOfSegmentReportingInformationBySegmentTextBlock
      contextRef="d_2022-01-01_2022-12-31"
      id="C1BE1244-B423-4BDD-BDFE-77834BD9EC38">
    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;For the year ended December 31, 2022&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Air Pollution Control Segment&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;FUEL CHEM Segment&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Other&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Total&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Revenues from external customers&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;10,597&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;16,344&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;26,941&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Cost of sales&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(6,924&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(8,374&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(15,298&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Gross margin&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,673&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;7,970&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,643&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Selling, general and administrative&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(12,275&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(12,275&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Research and development&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(895&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(895&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Operating income (loss) from continuing operations&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;3,673&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;7,970&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(13,170&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,527&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 52%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;For the year ended December 31, 2021&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Air Pollution Control Segment&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;FUEL CHEM Segment&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Other&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;Total&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Revenues from external customers&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;6,896&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;17,365&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;24,261&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Cost of sales&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(3,529&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(8,834&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(12,363&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 1px;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Gross margin&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;3,367&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;8,531&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;11,898&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

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       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(12,055&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;(12,055&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
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       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Research and development&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#x2014;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1,332&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;(1,332&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Operating income (loss) from continuing operations&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;3,367&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;8,531&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(13,387&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; padding-bottom: 3px;"&gt;)&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 9%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;(1,489&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;)&lt;/td&gt;
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    <us-gaap:ResearchAndDevelopmentExpense
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    <us-gaap:SellingGeneralAndAdministrativeExpense
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       &lt;td style="font-family: Times New Roman; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;For the years ended December 31,&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;
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       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Revenues:&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;United States&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;20,311&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;19,515&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt; &lt;p style="font-family: Times New Roman; font-size: 10pt; font-variant: normal; margin: 0pt 0pt 0pt 9pt;"&gt;Foreign&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;6,630&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;4,746&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;26,941&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: Times New Roman; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;24,261&lt;/td&gt;
       &lt;td style="width: 1%; font-family: Times New Roman; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&lt;span style="text-decoration: underline; "&gt;As of December 31,&lt;/span&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:center;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;Assets:&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="text-align: left; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;United States&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;47,007&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;46,271&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt 0pt 0pt 9pt;"&gt;Foreign&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;3,117&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;3,703&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;50,124&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;49,974&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;
   </us-gaap:ScheduleOfRevenuesFromExternalCustomersAndLongLivedAssetsByGeographicalAreasTableTextBlock>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-US"
      decimals="-3"
      id="c94231305"
      unitRef="USD">20311000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-US"
      decimals="-3"
      id="c94231306"
      unitRef="USD">19515000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-NonUsMember"
      decimals="-4"
      id="c94231307"
      unitRef="USD">6630000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-NonUsMember"
      decimals="-3"
      id="c94231308"
      unitRef="USD">4746000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94231309"
      unitRef="USD">26941000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31"
      decimals="-3"
      id="c94231310"
      unitRef="USD">24261000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:NoncurrentAssets
      contextRef="i_2022-12-31_StatementGeographicalAxis-US"
      decimals="-3"
      id="c94231314"
      unitRef="USD">47007000</us-gaap:NoncurrentAssets>
    <us-gaap:NoncurrentAssets
      contextRef="i_2021-12-31_StatementGeographicalAxis-US"
      decimals="-3"
      id="c94231315"
      unitRef="USD">46271000</us-gaap:NoncurrentAssets>
    <us-gaap:NoncurrentAssets
      contextRef="i_2022-12-31_StatementGeographicalAxis-NonUsMember"
      decimals="-3"
      id="c94231316"
      unitRef="USD">3117000</us-gaap:NoncurrentAssets>
    <us-gaap:NoncurrentAssets
      contextRef="i_2021-12-31_StatementGeographicalAxis-NonUsMember"
      decimals="-3"
      id="c94231317"
      unitRef="USD">3703000</us-gaap:NoncurrentAssets>
    <us-gaap:NoncurrentAssets
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231318"
      unitRef="USD">50124000</us-gaap:NoncurrentAssets>
    <us-gaap:NoncurrentAssets
      contextRef="i_2021-12-31"
      decimals="-3"
      id="c94231319"
      unitRef="USD">49974000</us-gaap:NoncurrentAssets>
    <us-gaap:RestructuringAndRelatedActivitiesDisclosureTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302421">
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;13.&lt;/em&gt;&#160;&#160;&#160;&#160;&#160;RESTRUCTURING ACTIVITIES&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;On &lt;em style="font: inherit;"&gt; January 18, 2019, &lt;/em&gt;the Company announced a planned suspension of its APC&#160;business operation in China (Beijing Fuel Tech). This action was part of Fuel Tech&#x2019;s ongoing operational improvement initiatives designed to prioritize resource allocation, reduce costs, and drive profitability for the Company on a global basis. The transition associated with the suspension of the APC business includes staff rationalization, supplier and partner engagement, and the monetization of certain assets. The remaining transition activities include the execution of the remaining activities to satisfy the requirements for the remaining APC projects in China (with a backlog totaling approximately $5) in addition to collection efforts for the remaining accounts receivable.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The following table presents our revenues and net loss in China for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total revenues&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;22&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Net loss&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;(209&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;(114&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;The following table presents net assets in China for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt; and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;929&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;1,235&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total liabilities&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;79&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;92&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total net assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;850&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;1,143&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;Total assets primarily consist of cash and accounts receivable. Total liabilities consist of accounts payable and certain accrued liabilities.&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;, Times, serif; font-size: 10pt; margin: 0pt; text-align: justify;"&gt;The&#160;Company&#160;recorded&#160;no&#160;restructuring&#160;charges for the years ended &lt;em style="font: inherit;"&gt; December 31, 2022&lt;/em&gt;&#160;and &lt;em style="font: inherit;"&gt;2021&lt;/em&gt;.&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman', Times, serif;font-size:10pt;margin:0pt;text-align:left;"&gt;&#160;&lt;/p&gt;


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    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total revenues&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;3&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;22&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Net loss&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;(209&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;(114&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;)&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;&lt;tbody&gt;&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; width: 70%;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;929&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;1,235&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total liabilities&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;79&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;92&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;&lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total net assets&lt;/p&gt; &lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;850&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;&lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;1,143&lt;/td&gt;&lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;&lt;/tr&gt;
&lt;/tbody&gt;&lt;/table&gt;
   </us-gaap:ScheduleOfRestructuringAndRelatedCostsTextBlock>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-CN"
      decimals="-3"
      id="c94231332"
      unitRef="USD">3000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
      contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-CN"
      decimals="-3"
      id="c94231333"
      unitRef="USD">22000</us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax>
    <us-gaap:NetIncomeLoss
      contextRef="d_2022-01-01_2022-12-31_StatementGeographicalAxis-CN"
      decimals="-3"
      id="c94231334"
      unitRef="USD">-209000</us-gaap:NetIncomeLoss>
    <us-gaap:NetIncomeLoss
      contextRef="d_2021-01-01_2021-12-31_StatementGeographicalAxis-CN"
      decimals="-3"
      id="c94231335"
      unitRef="USD">-114000</us-gaap:NetIncomeLoss>
    <us-gaap:Assets
      contextRef="i_2022-12-31_StatementGeographicalAxis-CN"
      decimals="-3"
      id="c94231338"
      unitRef="USD">929000</us-gaap:Assets>
    <us-gaap:Assets
      contextRef="i_2021-12-31_StatementGeographicalAxis-CN"
      decimals="-3"
      id="c94231339"
      unitRef="USD">1235000</us-gaap:Assets>
    <us-gaap:Liabilities
      contextRef="i_2022-12-31_StatementGeographicalAxis-CN"
      decimals="-3"
      id="c94231340"
      unitRef="USD">79000</us-gaap:Liabilities>
    <us-gaap:Liabilities
      contextRef="i_2021-12-31_StatementGeographicalAxis-CN"
      decimals="-3"
      id="c94231341"
      unitRef="USD">92000</us-gaap:Liabilities>
    <us-gaap:AssetsNet
      contextRef="i_2022-12-31_StatementGeographicalAxis-CN"
      decimals="-4"
      id="c94231342"
      unitRef="USD">850000</us-gaap:AssetsNet>
    <us-gaap:AssetsNet
      contextRef="i_2021-12-31_StatementGeographicalAxis-CN"
      decimals="-3"
      id="c94231343"
      unitRef="USD">1143000</us-gaap:AssetsNet>
    <us-gaap:RestructuringCharges
      contextRef="d_2022-01-01_2022-12-31"
      decimals="-3"
      id="c94231324"
      unitRef="USD">0</us-gaap:RestructuringCharges>
    <us-gaap:AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302424">
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;&lt;b&gt;&lt;em style="font: inherit;"&gt;14.&lt;/em&gt;&lt;/b&gt;&#160;&#160;&#160;&#160;&#160;&lt;b&gt;ACCRUED LIABILITIES&lt;/b&gt;&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;
   &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; text-align: justify; margin: 0pt;"&gt;The components of other accrued liabilities are as follows:&lt;/p&gt;
   &lt;p style="font-family:'Times New Roman';font-size:10pt;font-variant:normal;margin:0pt;"&gt;&#160;&lt;/p&gt;

    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;As of&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Contract liabilities (Note 2)&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;372&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;390&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Warranty reserve (Note 9)&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;159&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;159&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Other accrued liabilities&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;295&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;312&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total other accrued liabilities&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;826&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;861&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;

  </us-gaap:AccountsPayableAccruedLiabilitiesAndOtherLiabilitiesDisclosureCurrentTextBlock>
    <us-gaap:OtherCurrentLiabilitiesTableTextBlock contextRef="d_2022-01-01_2022-12-31" id="c2302425">
    &lt;table border="0" cellpadding="0" cellspacing="0" class="finTable" style="width: 100%; font-size: 10pt; font-family: &amp;quot;Times New Roman&amp;quot;; text-indent: 0px;"&gt;
     &lt;tbody&gt;
      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="6" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;&lt;em style="font: inherit;"&gt;As of&lt;/em&gt;&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2022&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td colspan="2" style="text-align: center; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt; &lt;p style="font-family:Times New Roman;font-size:10pt;font-variant:normal;text-align:center;margin:0pt;"&gt;&lt;em style="font: inherit;"&gt;December 31, 2021&lt;/em&gt;&lt;/p&gt; &lt;/td&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Contract liabilities (Note 2)&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;372&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;390&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Warranty reserve (Note 9)&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; text-align: right;"&gt;159&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;159&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(204, 238, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Other accrued liabilities&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;295&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 1px solid rgb(0, 0, 0);"&gt;312&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 1px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

      &lt;tr style="background-color: rgb(255, 255, 255); vertical-align: bottom"&gt;
       &lt;td style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt; &lt;p style="font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; font-variant: normal; margin: 0pt;"&gt;Total other accrued liabilities&lt;/p&gt; &lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;826&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt;"&gt;&#160;&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;$&lt;/td&gt;
       &lt;td style="width: 12%; text-align: right; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; margin-left: 0pt; border-bottom: 3px double rgb(0, 0, 0);"&gt;861&lt;/td&gt;
       &lt;td style="width: 1%; font-family: &amp;quot;Times New Roman&amp;quot;; font-size: 10pt; padding-bottom: 3px; margin-left: 0pt;"&gt;&#160;&lt;/td&gt;
      &lt;/tr&gt;

     &lt;/tbody&gt;
    &lt;/table&gt;
   </us-gaap:OtherCurrentLiabilitiesTableTextBlock>
    <us-gaap:ContractWithCustomerLiabilityCurrent
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231349"
      unitRef="USD">372000</us-gaap:ContractWithCustomerLiabilityCurrent>
    <us-gaap:ContractWithCustomerLiabilityCurrent
      contextRef="i_2021-12-31"
      decimals="-4"
      id="c94231350"
      unitRef="USD">390000</us-gaap:ContractWithCustomerLiabilityCurrent>
    <us-gaap:ProductWarrantyAccrualClassifiedCurrent
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231351"
      unitRef="USD">159000</us-gaap:ProductWarrantyAccrualClassifiedCurrent>
    <us-gaap:ProductWarrantyAccrualClassifiedCurrent
      contextRef="i_2021-12-31"
      decimals="-3"
      id="c94231352"
      unitRef="USD">159000</us-gaap:ProductWarrantyAccrualClassifiedCurrent>
    <ftek:OtherAccruedLiabilitiesMiscellaneousCurrent
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231353"
      unitRef="USD">295000</ftek:OtherAccruedLiabilitiesMiscellaneousCurrent>
    <ftek:OtherAccruedLiabilitiesMiscellaneousCurrent
      contextRef="i_2021-12-31"
      decimals="-3"
      id="c94231354"
      unitRef="USD">312000</ftek:OtherAccruedLiabilitiesMiscellaneousCurrent>
    <us-gaap:OtherAccruedLiabilitiesCurrent
      contextRef="i_2022-12-31"
      decimals="-3"
      id="c94231355"
      unitRef="USD">826000</us-gaap:OtherAccruedLiabilitiesCurrent>
    <us-gaap:OtherAccruedLiabilitiesCurrent
      contextRef="i_2021-12-31"
      decimals="-3"
      id="c94231356"
      unitRef="USD">861000</us-gaap:OtherAccruedLiabilitiesCurrent>
    <dei:AuditorFirmId contextRef="d_2022-01-01_2022-12-31">49</dei:AuditorFirmId>
    <link:footnoteLink
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        <link:loc
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        <link:footnote id="f9fbfbb44-3eec-4d03-ac95-67fe88bb4e02" xlink:label="f9fbfbb44-3eec-4d03-ac95-67fe88bb4e02" xlink:role="http://www.xbrl.org/2003/role/footnote" xlink:type="resource" xml:lang="en-us">In all periods presented, there were no tax impacts related to functional currency translation adjustments.</link:footnote>
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end
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
