<SEC-DOCUMENT>0001193125-24-130896.txt : 20240503
<SEC-HEADER>0001193125-24-130896.hdr.sgml : 20240503
<ACCEPTANCE-DATETIME>20240503172230
ACCESSION NUMBER:		0001193125-24-130896
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		14
CONFORMED PERIOD OF REPORT:	20240503
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Regulation FD Disclosure
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20240503
DATE AS OF CHANGE:		20240503

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ADTRAN Holdings, Inc.
		CENTRAL INDEX KEY:			0000926282
		STANDARD INDUSTRIAL CLASSIFICATION:	TELEPHONE & TELEGRAPH APPARATUS [3661]
		ORGANIZATION NAME:           	04 Manufacturing
		IRS NUMBER:				872164282
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41446
		FILM NUMBER:		24914506

	BUSINESS ADDRESS:	
		STREET 1:		901 EXPLORER BLVD
		CITY:			HUNTSVILLE
		STATE:			AL
		ZIP:			35806
		BUSINESS PHONE:		256-963-8220

	MAIL ADDRESS:	
		STREET 1:		901 EXPLORER BLVD
		CITY:			HUNTSVILLE
		STATE:			AL
		ZIP:			35806

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ADTRAN INC
		DATE OF NAME CHANGE:	19940705
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>d835183d8k.htm
<DESCRIPTION>8-K
<TEXT>
<XBRL>
<?xml version='1.0' encoding='ASCII'?>
<html xmlns:dei="http://xbrl.sec.gov/dei/2023" xmlns:us-types="http://fasb.org/us-types/2023" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:adtn="http://www.adtran.com/20240503" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:utr="http://www.xbrl.org/2009/utr" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:ix="http://www.xbrl.org/2013/inlineXBRL" xmlns:ixt="http://www.xbrl.org/inlineXBRL/transformation/2015-02-26" xmlns:ixt-sec="http://www.sec.gov/inlineXBRL/transformation/2015-08-31" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>8-K</title>
<meta http-equiv="Content-Type" content="text/html"/>
</head>
   <body><div style="display:none"> <ix:header> <ix:hidden> <ix:nonNumeric name="dei:AmendmentFlag" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-242">false</ix:nonNumeric> <ix:nonNumeric id="Hidden_dei_EntityCentralIndexKey" name="dei:EntityCentralIndexKey" contextRef="duration_2024-05-03_to_2024-05-03">0000926282</ix:nonNumeric> </ix:hidden> <ix:references> <link:schemaRef xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:link="http://www.xbrl.org/2003/linkbase" xlink:type="simple" xlink:href="adtn-20240503.xsd" xlink:arcrole="http://www.xbrl.org/2003/linkbase"/> </ix:references> <ix:resources> <xbrli:context id="duration_2024-05-03_to_2024-05-03"> <xbrli:entity> <xbrli:identifier scheme="http://www.sec.gov/CIK">0000926282</xbrli:identifier> </xbrli:entity> <xbrli:period> <xbrli:startDate>2024-05-03</xbrli:startDate> <xbrli:endDate>2024-05-03</xbrli:endDate> </xbrli:period> </xbrli:context> </ix:resources> </ix:header> </div> <div style="text-align:center"> <div style="width:8.5in;text-align:left;margin-left: auto;margin-right: auto"> <p style="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&#160;</p> <p style="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&#160;</p> <p style="margin-top:4pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman;font-weight:bold;text-align:center">UNITED STATES</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman;font-weight:bold;text-align:center">SECURITIES AND EXCHANGE COMMISSION</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">WASHINGTON, D.C. 20549</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <p style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</p></div> <p style="margin-top:10pt; margin-bottom:0pt; font-size:18pt; font-family:Times New Roman;font-weight:bold;text-align:center">FORM <span style="white-space:nowrap"><ix:nonNumeric name="dei:DocumentType" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-253">8-K</ix:nonNumeric></span></p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <p style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</p></div> <p style="margin-top:10pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">CURRENT REPORT</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">Pursuant to Section 13 or 15(d)</p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">of the Securities Exchange Act of 1934</p> <p style="margin-top:10pt; margin-bottom:0pt; font-size:12pt; font-family:Times New Roman;font-weight:bold;text-align:center">Date of Report (Date of earliest event reported): <ix:nonNumeric name="dei:DocumentPeriodEndDate" contextRef="duration_2024-05-03_to_2024-05-03" format="ixt:datemonthdayyearen" id="ixv-254">May 3, 2024</ix:nonNumeric></p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <p style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</p></div> <p style="margin-top:10pt; margin-bottom:0pt; font-size:24pt; font-family:Times New Roman;font-weight:bold;text-align:center"><ix:nonNumeric name="dei:EntityRegistrantName" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-255">ADTRAN Holdings, Inc.</ix:nonNumeric></p> <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">(Exact name of Registrant as Specified in Its Charter)</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <p style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</p></div> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="border-collapse:collapse; font-family:Times New Roman; font-size:8pt;width:100%;border:0;margin:0 auto">
<tr>
<td style="width:34%"/>
<td style="vertical-align:bottom"/>
<td style="width:32%"/>
<td style="vertical-align:bottom;width:1%"/>
<td style="width:32%"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold"><ix:nonNumeric name="dei:EntityIncorporationStateCountryCode" contextRef="duration_2024-05-03_to_2024-05-03" format="ixt-sec:stateprovnameen" id="ixv-256">Delaware</ix:nonNumeric></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold"><span style="white-space:nowrap"><ix:nonNumeric name="dei:EntityFileNumber" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-257">001-41446</ix:nonNumeric></span></span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold"><span style="white-space:nowrap"><ix:nonNumeric name="dei:EntityTaxIdentificationNumber" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-258">87-2164282</ix:nonNumeric></span></span></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold">(State or Other Jurisdiction<br/>of Incorporation)</span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">(Commission</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">File Number)</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold">(IRS Employer<br/>Identification No.)</span></td></tr></table> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;width:100%;border:0;margin:0 auto">
<tr>
<td style="width:50%"/>
<td style="vertical-align:bottom;width:1%"/>
<td style="width:48%"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style=" text-align: center;margin:auto; vertical-align:top"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center"><ix:nonNumeric name="dei:EntityAddressAddressLine1" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-259">901 Explorer Boulevard</ix:nonNumeric></p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center"><ix:nonNumeric name="dei:EntityAddressCityOrTown" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-260">Huntsville</ix:nonNumeric>, <ix:nonNumeric name="dei:EntityAddressStateOrProvince" contextRef="duration_2024-05-03_to_2024-05-03" format="ixt-sec:stateprovnameen" id="ixv-261">Alabama</ix:nonNumeric></p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:bottom"><span style="font-weight:bold"><ix:nonNumeric name="dei:EntityAddressPostalZipCode" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-262">35806-2807</ix:nonNumeric></span></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold">(Address of Principal Executive Offices)</span></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><span style="font-weight:bold">(Zip Code)</span></td></tr></table> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">Registrant&#8217;s Telephone Number, Including Area Code: <ix:nonNumeric name="dei:CityAreaCode" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-263">(256)</ix:nonNumeric> <ix:nonNumeric name="dei:LocalPhoneNumber" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-264">963-8000</ix:nonNumeric></p> <p style="margin-top:10pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">(Former Name or Former Address, if Changed Since Last Report)</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <div style="text-align:center"> <p style="line-height:6.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1.00pt solid #000000;width:21%;text-align:center;margin-left: auto;margin-right: auto">&#160;</p></div> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</p> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top"><ix:nonNumeric name="dei:WrittenCommunications" contextRef="duration_2024-05-03_to_2024-05-03" format="ixt-sec:boolballotbox" id="ixv-265">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left">Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top"><ix:nonNumeric name="dei:SolicitingMaterial" contextRef="duration_2024-05-03_to_2024-05-03" format="ixt-sec:boolballotbox" id="ixv-266">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left">Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top"><ix:nonNumeric name="dei:PreCommencementTenderOffer" contextRef="duration_2024-05-03_to_2024-05-03" format="ixt-sec:boolballotbox" id="ixv-267">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left">Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</p></td></tr></table> <p style="font-size:6pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table style="border-collapse:collapse; font-family:Times New Roman; font-size:10pt;border:0;width:100%" cellpadding="0" cellspacing="0">
<tr style="page-break-inside:avoid">
<td style="width:4%;vertical-align:top"><ix:nonNumeric name="dei:PreCommencementIssuerTenderOffer" contextRef="duration_2024-05-03_to_2024-05-03" format="ixt-sec:boolballotbox" id="ixv-268">&#9744;</ix:nonNumeric></td>
<td style="vertical-align:top"> <p style=" margin-top:0pt ; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:left">Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</p></td></tr></table> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Securities registered pursuant to Section 12(b) of the Act:</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="border-collapse:collapse; font-family:Times New Roman; font-size:8pt;width:100%;border:0;margin:0 auto">
<tr>
<td style="width:34%"/>
<td style="vertical-align:bottom"/>
<td style="width:32%"/>
<td style="vertical-align:bottom;width:1%"/>
<td style="width:32%"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style=" text-align: center;margin:auto; border-bottom:1.00pt solid #000000;vertical-align:bottom;white-space:nowrap"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Title of each class</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; border-bottom:1.00pt solid #000000;vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Trading<br/>Symbol(s)</p></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; border-bottom:1.00pt solid #000000;vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Name of each exchange</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">on which registered</p></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style=" text-align: center;margin:auto; vertical-align:top"><ix:nonNumeric name="dei:Security12bTitle" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-269">Common Stock, Par Value $0.01 per share</ix:nonNumeric></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><ix:nonNumeric name="dei:TradingSymbol" contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-270">ADTN</ix:nonNumeric></td>
<td style="vertical-align:bottom">&#160;</td>
<td style=" text-align: center;margin:auto; vertical-align:top"><ix:nonNumeric name="dei:SecurityExchangeName" contextRef="duration_2024-05-03_to_2024-05-03" format="ixt-sec:exchnameen" id="ixv-271">Nasdaq Global Select Market</ix:nonNumeric></td></tr></table> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (&#167; 230.405 of this chapter) or Rule <span style="white-space:nowrap">12b-2</span> of the Securities Exchange Act of 1934 (&#167; 240.12b-2 of this chapter).</p> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Emerging growth company <ix:nonNumeric name="dei:EntityEmergingGrowthCompany" contextRef="duration_2024-05-03_to_2024-05-03" format="ixt-sec:boolballotbox" id="ixv-272">&#9744;</ix:nonNumeric></p> <p style="margin-top:10pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">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 13(a) of the Exchange Act. &#9744;</p> <p style="font-size:10pt;margin-top:0pt;margin-bottom:0pt">&#160;</p> <p style="line-height:1.0pt;margin-top:0pt;margin-bottom:0pt;border-bottom:1px solid #000000">&#160;</p> <p style="line-height:3.0pt;margin-top:0pt;margin-bottom:2pt;border-bottom:1px solid #000000">&#160;</p></div></div>

<p style="margin-top:1em; margin-bottom:0em; page-break-before:always"> </p>
<hr style="color:#999999;height:3px;width:100%"/>

<div style="text-align:center"><div style="width:8.5in;text-align:left;margin-left: auto;margin-right: auto">
 <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold">Item&#8201;2.02 (Results of Operations and Financial Condition) and Item 7.01 (Regulation FD Disclosure) </p> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">As a company listed on the Frankfurt Stock Exchange, ADTRAN Holdings, Inc. (the &#8220;Company&#8221;) is subject to German and European securities laws. Article 17 of the Market Abuse Regulation (EU) No.&#160;596/2014 of the European Parliament and of the Council of 16&#160;April 2014 mandates that listed issuers such as the Company provide real time disclosure in certain circumstances. On May&#160;3, 2024, the Company published an ad hoc announcement in Germany disclosing the Company&#8217;s expected goodwill impairment charge during the three months ended March&#160;31, 2024. </p> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">In connection with the preparation of its consolidated financial statements for the first quarter of 2024, the Company determined that factors such as a decrease in the Company&#8217;s market capitalization, cautious service provider spending due to economic uncertainty and continued customer inventory adjustments triggered a quantitative impairment assessment of the Company&#8217;s reporting units. Based on this assessment, on May&#160;3, 2024, the Company determined that the carrying value of its Network Solutions segment exceeded its fair value and a material charge for impairment to goodwill will be required for the first quarter of 2024. As a result, the Company expects to record a material impairment charge in an estimated amount of $293&#160;million related to the Company&#8217;s goodwill during the three months ended March&#160;31, 2024. </p> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The impairment leads to an increased GAAP operating loss for the first quarter 2024 by the same amount. It will not, however, result in any current or future cash expenditure, and it has no impact on the Company&#8217;s GAAP revenue and <span style="white-space:nowrap">non-GAAP</span> operating margin guidance for the first quarter of 2024. Additionally, the charge has no impact on the Company&#8217;s compliance with covenants under its credit agreement. </p> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">A copy of the Company&#8217;s ad hoc announcement is attached as Exhibit 99.1 hereto and incorporated by reference herein. </p> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The information included in, or furnished with, Items 2.02 and 7.01 of this Current Report on Form <span style="white-space:nowrap">8-K</span> shall not be deemed &#8220;filed&#8221; for purposes of Section&#160;18 of the Securities Exchange Act of 1934, as amended (the &#8220;Exchange Act&#8221;), nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing. </p> <p style="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold">Forward-Looking Statements </p> <p style="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">This Current Report on Form <span style="white-space:nowrap">8-K</span> contains forward-looking statements that are based on our management&#8217;s beliefs and assumptions and on information currently available to our management.&#160;Forward-looking statements include, among other things, statements regarding the Company&#8217;s estimated goodwill impairment charge, the goodwill impairment charge&#8217;s impact on the Company&#8217;s financial statements and financial guidance, and related matters.&#160;Forward-looking statements include statements that are not historical facts and can be identified by terms such as &#8220;anticipate,&#8221; &#8220;believe,&#8221; &#8220;could,&#8221; &#8220;estimate,&#8221; &#8220;expect,&#8221; &#8220;intend,&#8221; &#8220;may,&#8221; &#8220;plan,&#8221; &#8220;potential,&#8221; &#8220;predict,&#8221; &#8220;project,&#8221; &#8220;seek,&#8221; &#8220;should,&#8221; &#8220;will,&#8221; &#8220;would&#8221; or similar expressions and the negatives of those terms.&#160;Our actual results and the timing of events could materially differ from those anticipated in such forward-looking statements as a result of certain risks and uncertainties, including risks relating to the final amount of our goodwill impairment charge, its impact on our financial statements, and the risks described in more detail in the Company&#8217;s most recent Annual Report on Form <span style="white-space:nowrap">10-K</span> and Quarterly Reports on Form <span style="white-space:nowrap">10-Q,</span> as amended, and other documents on file with the SEC.&#160;The Company disclaims and does not undertake any obligation to update or revise any forward-looking statement in this filing, except as required by applicable law or regulation. </p> <p style="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold">Item&#8201;9.01 Financial Statements and Exhibits. </p> <p style="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:100%;border:0;margin:0 auto">


<tr>

<td/>

<td style="vertical-align:bottom;width:10%"/>
<td style="width:87%"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt">
<td style="vertical-align:bottom;white-space:nowrap" align="center"> <p style=" margin-top:0pt ; margin-bottom:0pt; border-bottom:1.00pt solid #000000; display:inline-block; font-size:8pt; font-family:Times New Roman;font-weight:bold;text-align:center">Exhibit&#160;Number</p></td>
<td style="vertical-align:bottom">&#160;&#160;</td>
<td style="vertical-align:bottom;white-space:nowrap"> <p style=" margin-top:0pt ; margin-bottom:0pt; border-bottom:1.00pt solid #000000; display:table-cell; font-size:8pt; font-family:Times New Roman;font-weight:bold">Description</p></td></tr>


<tr style="font-size:1pt">
<td style="height:6pt"/>
<td style="height:6pt" colspan="2"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:top;white-space:nowrap">99.1</td>
<td style="vertical-align:bottom">&#160;&#160;</td>
<td style="vertical-align:top"><a href="d835183dex991.htm">Ad hoc notification dated May&#160;3, 2024 (English translation) </a></td></tr>
<tr style="font-size:1pt">
<td style="height:6pt"/>
<td style="height:6pt" colspan="2"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:top;white-space:nowrap">104</td>
<td style="vertical-align:bottom">&#160;&#160;</td>
<td style="vertical-align:top">Cover Page Interactive Data File &#8211; the cover page iXBRL tags are embedded within the Inline XBRL document</td></tr>
</table>
</div></div>



<p style="margin-top:1em; margin-bottom:0em; page-break-before:always"> </p>
<hr style="color:#999999;height:3px;width:100%"/>

<div style="text-align:center"><div style="width:8.5in;text-align:left;margin-left: auto;margin-right: auto">
 <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;font-weight:bold;text-align:center">SIGNATURES </p> <p style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">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 hereunto duly authorized. </p> <p style="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&#160;</p>
<table cellspacing="0" cellpadding="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:100%;border:0">


<tr>

<td style="width:45%"/>

<td style="vertical-align:bottom;width:1%"/>
<td style="width:4%"/>

<td style="vertical-align:bottom"/>
<td style="width:3%"/>

<td style="vertical-align:bottom;width:1%"/>
<td style="width:45%"/></tr>


<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom"/>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"/>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"/>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom">ADTRAN Holdings, Inc.</td></tr>
<tr style="font-size:1pt">
<td style="height:12pt"/>
<td style="height:12pt" colspan="2"/>
<td style="height:12pt" colspan="2"/>
<td style="height:12pt" colspan="2"/></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom">Date: May&#160;3, 2024</td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"/>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:top">By:</td>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:1pt; border-bottom:1px solid #000000; font-size:10pt; font-family:Times New Roman">/s/ Ulrich Dopfer</p></td></tr>
<tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<td style="vertical-align:bottom"/>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"/>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"/>
<td style="vertical-align:bottom">&#160;</td>
<td style="vertical-align:bottom"> <p style="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Ulrich Dopfer</p> <p style="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman">Chief Financial Officer</p></td></tr>
</table>
</div></div>

</body></html>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>d835183dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
<HTML><HEAD>
<TITLE>EX-99.1</TITLE>
</HEAD>
 <BODY BGCOLOR="WHITE" STYLE="line-height:Normal">

<Center><DIV STYLE="width:8.5in" align="left">
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right"><B>EXHIBIT 99.1 </B></P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><FONT STYLE="white-space:nowrap">Ad-hoc</FONT> notification pursuant to Article 17 of Regulation (EU) No.&nbsp;596/2014 </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>ADTRAN Holdings, Inc.: <FONT STYLE="white-space:nowrap">Non-cash</FONT> goodwill impairment for the first quarter 2024 in an estimated amount of
$293&nbsp;million; no impact on <FONT STYLE="white-space:nowrap">non-GAAP</FONT> results and cash flow for the first quarter 2024 </B></P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Huntsville,
Alabama (United States of America). May&nbsp;3, 2024 (CT) </B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">In connection with the preparation of its consolidated financial statements for the first
quarter of 2024, ADTRAN Holdings, Inc. (&#147;<B>Company</B>&#148;) today determined that a material charge for impairment to goodwill will be required for the first quarter of 2024. As a result, the Company expects to record a material <FONT
STYLE="white-space:nowrap">non-cash</FONT> goodwill impairment on the carrying amount of goodwill solely allocated to the Network Solutions segment in an estimated amount of $293&nbsp;million. The quantitative impairment assessment was triggered as
a result of factors such as a decrease in the Company&#146;s market capitalization, cautious service provider spending due to economic uncertainty and continued customer inventory adjustments. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The impairment leads to an increased GAAP operating loss for the first quarter 2024 by the same amount. It will not, however, result in any current or future
cash expenditure and has no impact on the Company&#146;s GAAP revenue and the <FONT STYLE="white-space:nowrap">non-GAAP</FONT> operating margin guided for the first quarter 2024. Additionally, the charge has no impact on the Company&#146;s
compliance with covenants under its credit agreement. </P> <P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Cautionary Note Regarding Forward-Looking Statements </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Statements contained in this ad hoc notification contain forward-looking statements that are based on our management&#146;s beliefs and assumptions and on
information currently available to our management. Forward-looking statements include, among other things, statements regarding the Company&#146;s estimated goodwill impairment charge, the goodwill impairment&#146;s impact on the Company&#146;s
financial statements and financial guidance, and related matters. Forward-looking statements include statements that are not historical facts and can be identified by terms such as &#147;anticipate,&#148; &#147;believe,&#148; &#147;could,&#148;
&#147;estimate,&#148; &#147;expect,&#148; &#147;intend,&#148; &#147;may,&#148; &#147;plan,&#148; &#147;potential,&#148; &#147;predict,&#148; &#147;project,&#148; &#147;seek,&#148; &#147;should,&#148; &#147;will,&#148; &#147;would&#148; or similar
expressions and the negatives of those terms. Our actual results and the timing of events could materially differ from those anticipated in such forward-looking statements as a result of certain risks and uncertainties including risks relating to
the final amount of our goodwill impairment charge, its impact on our financial statements, and the risks described in more detail in the Company&#146;s most recent Annual Report on Form <FONT STYLE="white-space:nowrap">10-K</FONT> and Quarterly
Reports on Form <FONT STYLE="white-space:nowrap">10-Q,</FONT> as amended, and other documents on file with the Securities and Exchange Commission. The Company disclaims and does not undertake any obligation to update or revise any forward-looking
statement in this filing, except as required by applicable law or regulation. </P>
</DIV></Center>


<p style="margin-top:1em; margin-bottom:0em; page-break-before:always"> </p>
<HR SIZE="3" style="COLOR:#999999" WIDTH="100%" ALIGN="CENTER">

<Center><DIV STYLE="width:8.5in" align="left">
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Published by </B></P>
<P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Adtran Holdings, Inc. </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><U>www.adtran.com </U></P>
<P STYLE="margin-top:16pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>For media </B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Gareth Spence </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">+44 1904 699 358 </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><U>public.relations@adtran.com </U></P>
<P STYLE="margin-top:18pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><B>Notifying person and contact for investors </B></P> <P STYLE="margin-top:6pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Steven
Williams </P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">+49 89 890 665 918 </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman"><U>investor.relations@adtran.com </U></P>
</DIV></Center>

</BODY></HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>3
<FILENAME>adtn-20240503.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii"?>
<!-- DFIN - https://www.dfinsolutions.com/ -->
<!-- CTU Version: Release master Build:20231012.2 -->
<!-- Creation date: 5/3/2024 11:49:51 PM Eastern Time -->
<!-- Copyright (c) 2024 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<xsd:schema
  xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric"
  xmlns:num="http://www.xbrl.org/dtr/type/numeric"
  xmlns:us-types="http://fasb.org/us-types/2023"
  xmlns:adtn="http://www.adtran.com/20240503"
  xmlns:dei="http://xbrl.sec.gov/dei/2023"
  xmlns:xbrli="http://www.xbrl.org/2003/instance"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
  attributeFormDefault="unqualified"
  elementFormDefault="qualified"
  targetNamespace="http://www.adtran.com/20240503"
  xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/instance" />
    <xsd:import schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" namespace="http://www.xbrl.org/2003/linkbase" />
    <xsd:import schemaLocation="https://xbrl.sec.gov/dei/2023/dei-2023.xsd" namespace="http://xbrl.sec.gov/dei/2023" />
    <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/numeric" />
    <xsd:import schemaLocation="http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd" namespace="http://www.xbrl.org/dtr/type/non-numeric" />
    <xsd:import schemaLocation="https://xbrl.sec.gov/naics/2023/naics-2023.xsd" namespace="http://xbrl.sec.gov/naics/2023" />
    <xsd:import schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd" namespace="http://xbrl.org/2005/xbrldt" />
  <xsd:annotation>
    <xsd:appinfo>
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="adtn-20240503_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:title="Label Links, all" xlink:type="simple" />
      <link:linkbaseRef xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="adtn-20240503_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:title="Presentation Links, all" xlink:type="simple" />
      <link:roleType roleURI="http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation" id="Role_DocumentDocumentAndEntityInformation">
        <link:definition>100000 - Document - Document and Entity Information</link:definition>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xsd:appinfo>
  </xsd:annotation>
</xsd:schema>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>4
<FILENAME>adtn-20240503_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFIN - https://www.dfinsolutions.com/ -->
<!-- CTU Version: Release master Build:20231012.2 -->
<!-- Creation date: 5/3/2024 11:49:51 PM Eastern Time -->
<!-- Copyright (c) 2024 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CoverAbstract" xlink:type="locator" xlink:label="dei_CoverAbstract" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CoverAbstract" xlink:to="dei_CoverAbstract_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_CoverAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_CoverAbstract_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cover [Abstract]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_AmendmentFlag" xlink:to="dei_AmendmentFlag_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_AmendmentFlag_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityCentralIndexKey" xlink:to="dei_EntityCentralIndexKey_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentType" xlink:to="dei_DocumentType_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_DocumentType_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_DocumentPeriodEndDate" xlink:to="dei_DocumentPeriodEndDate_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityRegistrantName" xlink:to="dei_EntityRegistrantName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityRegistrantName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityIncorporationStateCountryCode" xlink:to="dei_EntityIncorporationStateCountryCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation State Country Code</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation State Country Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityFileNumber" xlink:to="dei_EntityFileNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity File Number</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityFileNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityTaxIdentificationNumber" xlink:to="dei_EntityTaxIdentificationNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressAddressLine1" xlink:to="dei_EntityAddressAddressLine1_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line One</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressCityOrTown" xlink:to="dei_EntityAddressCityOrTown_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, City or Town</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressStateOrProvince" xlink:to="dei_EntityAddressStateOrProvince_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, State or Province</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityAddressPostalZipCode" xlink:to="dei_EntityAddressPostalZipCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Postal Zip Code</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_CityAreaCode" xlink:to="dei_CityAreaCode_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_CityAreaCode_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_LocalPhoneNumber" xlink:to="dei_LocalPhoneNumber_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_LocalPhoneNumber_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_WrittenCommunications" xlink:to="dei_WrittenCommunications_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_WrittenCommunications_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Written Communications</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_WrittenCommunications_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Written Communications</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SolicitingMaterial" xlink:to="dei_SolicitingMaterial_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SolicitingMaterial_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Soliciting Material</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_SolicitingMaterial_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Soliciting Material</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementTenderOffer" xlink:to="dei_PreCommencementTenderOffer_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pre Commencement Tender Offer</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre Commencement Tender Offer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_PreCommencementIssuerTenderOffer" xlink:to="dei_PreCommencementIssuerTenderOffer_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Pre Commencement Issuer Tender Offer</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_PreCommencementIssuerTenderOffer_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pre Commencement Issuer Tender Offer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_Security12bTitle" xlink:to="dei_Security12bTitle_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security 12b Title</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_Security12bTitle_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security 12b Title</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_TradingSymbol" xlink:to="dei_TradingSymbol_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_TradingSymbol_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_SecurityExchangeName" xlink:to="dei_SecurityExchangeName_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_SecurityExchangeName_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security Exchange Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="dei_EntityEmergingGrowthCompany" xlink:to="dei_EntityEmergingGrowthCompany_lbl" />
    <link:label xml:lang="en-US" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label">Entity Emerging Growth Company</link:label>
    <link:label xml:lang="en-US" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Emerging Growth Company</link:label>
  </link:labelLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>5
<FILENAME>adtn-20240503_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE
<TEXT>
<XBRL>
<?xml version="1.0" encoding="us-ascii" standalone="yes"?>
<!-- DFIN - https://www.dfinsolutions.com/ -->
<!-- CTU Version: Release master Build:20231012.2 -->
<!-- Creation date: 5/3/2024 11:49:51 PM Eastern Time -->
<!-- Copyright (c) 2024 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
<link:linkbase
    xmlns:link="http://www.xbrl.org/2003/linkbase"
    xmlns:xlink="http://www.w3.org/1999/xlink"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:xbrldt="http://xbrl.org/2005/xbrldt"
    xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:roleRef roleURI="http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation" xlink:href="adtn-20240503.xsd#Role_DocumentDocumentAndEntityInformation" xlink:type="simple" />
  <link:presentationLink xlink:type="extended" xlink:role="http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation">
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CoverAbstract" xlink:type="locator" xlink:label="dei_CoverAbstract" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_AmendmentFlag" xlink:type="locator" xlink:label="dei_AmendmentFlag" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_AmendmentFlag" order="22.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityCentralIndexKey" xlink:type="locator" xlink:label="dei_EntityCentralIndexKey" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityCentralIndexKey" order="23.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentType" xlink:type="locator" xlink:label="dei_DocumentType" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_DocumentType" order="25.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_DocumentPeriodEndDate" xlink:type="locator" xlink:label="dei_DocumentPeriodEndDate" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_DocumentPeriodEndDate" order="26.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityRegistrantName" xlink:type="locator" xlink:label="dei_EntityRegistrantName" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityRegistrantName" order="27.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityIncorporationStateCountryCode" xlink:type="locator" xlink:label="dei_EntityIncorporationStateCountryCode" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityIncorporationStateCountryCode" order="28.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityFileNumber" xlink:type="locator" xlink:label="dei_EntityFileNumber" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityFileNumber" order="29.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityTaxIdentificationNumber" xlink:type="locator" xlink:label="dei_EntityTaxIdentificationNumber" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityTaxIdentificationNumber" order="30.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressAddressLine1" xlink:type="locator" xlink:label="dei_EntityAddressAddressLine1" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressAddressLine1" order="31.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressCityOrTown" xlink:type="locator" xlink:label="dei_EntityAddressCityOrTown" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressCityOrTown" order="32.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressStateOrProvince" xlink:type="locator" xlink:label="dei_EntityAddressStateOrProvince" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressStateOrProvince" order="33.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityAddressPostalZipCode" xlink:type="locator" xlink:label="dei_EntityAddressPostalZipCode" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityAddressPostalZipCode" order="34.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_CityAreaCode" xlink:type="locator" xlink:label="dei_CityAreaCode" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_CityAreaCode" order="35.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_LocalPhoneNumber" xlink:type="locator" xlink:label="dei_LocalPhoneNumber" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_LocalPhoneNumber" order="36.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_WrittenCommunications" xlink:type="locator" xlink:label="dei_WrittenCommunications" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_WrittenCommunications" order="37.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SolicitingMaterial" xlink:type="locator" xlink:label="dei_SolicitingMaterial" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_SolicitingMaterial" order="38.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_PreCommencementTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementTenderOffer" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_PreCommencementTenderOffer" order="39.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_PreCommencementIssuerTenderOffer" xlink:type="locator" xlink:label="dei_PreCommencementIssuerTenderOffer" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_PreCommencementIssuerTenderOffer" order="40.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_Security12bTitle" xlink:type="locator" xlink:label="dei_Security12bTitle" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_Security12bTitle" order="41.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_TradingSymbol" xlink:type="locator" xlink:label="dei_TradingSymbol" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_TradingSymbol" order="42.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_SecurityExchangeName" xlink:type="locator" xlink:label="dei_SecurityExchangeName" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_SecurityExchangeName" order="43.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2023/dei-2023.xsd#dei_EntityEmergingGrowthCompany" xlink:type="locator" xlink:label="dei_EntityEmergingGrowthCompany" />
    <link:presentationArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/parent-child" xlink:from="dei_CoverAbstract" xlink:to="dei_EntityEmergingGrowthCompany" order="44.001" priority="2" use="optional" preferredLabel="http://www.xbrl.org/2003/role/terseLabel" />
  </link:presentationLink>
</link:linkbase>
</XBRL>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>7
<FILENAME>R1.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;">v3.24.1.u1</span><table class="report" border="0" cellspacing="2" id="idm140062072275984">
<tr>
<th class="tl" colspan="1" rowspan="1"><div style="width: 200px;"><strong>Document and Entity Information<br></strong></div></th>
<th class="th"><div>May 03, 2024</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_dei_CoverAbstract', window );"><strong>Cover [Abstract]</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_dei_AmendmentFlag', window );">Amendment Flag</a></td>
<td class="text">false<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_EntityCentralIndexKey', window );">Entity Central Index Key</a></td>
<td class="text">0000926282<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_DocumentType', window );">Document Type</a></td>
<td class="text">8-K<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_DocumentPeriodEndDate', window );">Document Period End Date</a></td>
<td class="text">May  03,  2024<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_EntityRegistrantName', window );">Entity Registrant Name</a></td>
<td class="text">ADTRAN Holdings, Inc.<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_EntityIncorporationStateCountryCode', window );">Entity Incorporation State Country Code</a></td>
<td class="text">DE<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_EntityFileNumber', window );">Entity File Number</a></td>
<td class="text">001-41446<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_EntityTaxIdentificationNumber', window );">Entity Tax Identification Number</a></td>
<td class="text">87-2164282<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_EntityAddressAddressLine1', window );">Entity Address, Address Line One</a></td>
<td class="text">901 Explorer Boulevard<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_EntityAddressCityOrTown', window );">Entity Address, City or Town</a></td>
<td class="text">Huntsville<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_EntityAddressStateOrProvince', window );">Entity Address, State or Province</a></td>
<td class="text">AL<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_EntityAddressPostalZipCode', window );">Entity Address, Postal Zip Code</a></td>
<td class="text">35806-2807<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_CityAreaCode', window );">City Area Code</a></td>
<td class="text">(256)<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_LocalPhoneNumber', window );">Local Phone Number</a></td>
<td class="text">963-8000<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_WrittenCommunications', window );">Written Communications</a></td>
<td class="text">false<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_SolicitingMaterial', window );">Soliciting Material</a></td>
<td class="text">false<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_PreCommencementTenderOffer', window );">Pre Commencement Tender Offer</a></td>
<td class="text">false<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_PreCommencementIssuerTenderOffer', window );">Pre Commencement Issuer Tender Offer</a></td>
<td class="text">false<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_Security12bTitle', window );">Security 12b Title</a></td>
<td class="text">Common Stock, Par Value $0.01 per share<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_TradingSymbol', window );">Trading Symbol</a></td>
<td class="text">ADTN<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_SecurityExchangeName', window );">Security Exchange Name</a></td>
<td class="text">NASDAQ<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_EntityEmergingGrowthCompany', window );">Entity Emerging Growth Company</a></td>
<td class="text">false<span></span>
</td>
</tr>
</table>
<div style="display: none;">
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_AmendmentFlag">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</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>
</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_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>
</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_CoverAbstract">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</a></td></tr>
<tr><td><div class="body" style="padding: 2px;">
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">- Definition</a><div><p>Cover page.</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_CoverAbstract</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_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_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_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_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_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_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_PreCommencementIssuerTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</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 Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under 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 13e<br> -Subsection 4c<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ 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_PreCommencementIssuerTenderOffer</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_PreCommencementTenderOffer">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</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 Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under 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 14d<br> -Subsection 2b<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ 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_PreCommencementTenderOffer</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_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_SolicitingMaterial">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</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 Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under 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> -Section 14a<br> -Number 240<br> -Subsection 12<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ 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_SolicitingMaterial</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_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>
<table border="0" cellpadding="0" cellspacing="0" class="authRefData" style="display: none;" id="defref_dei_WrittenCommunications">
<tr><td class="hide"><a style="color: white;" href="javascript:void(0);" onclick="Show.hideAR();">X</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 Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities 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 Securities Act<br> -Number 230<br> -Section 425<br></p></div>
<a href="javascript:void(0);" onclick="Show.toggleNext( this );">+ 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_WrittenCommunications</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>
</div>
</body>
</html>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EXCEL
<SEQUENCE>8
<FILENAME>Financial_Report.xlsx
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
begin 644 Financial_Report.xlsx
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M=]W3CHG&K=!X#;[Q3X?#KHG&J]!TZVDF)_VN:Z3I%FA"1N/K>A(5M>5 TR
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M!Z.:60F]A%9JGZJ'-#ZH'C(*!?&Y'C[E>G@*-Y;&O%"N@GL!_]':-\*K^(+
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MU4#E/]O4#6CV#30<D05>,9FV-J/D3@H\W/[O#;#"Q([A[8N_ 5!+ P04
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M4$L! A0#%     @ SHJC6,Q0<YWO    *P(  !$              ( !KP
M &1O8U!R;W!S+V-O<F4N>&UL4$L! A0#%     @ SHJC6)E<G",0!@  G"<
M !,              ( !S0$  'AL+W1H96UE+W1H96UE,2YX;6Q02P$"% ,4
M    " #.BJ-8HO4"WU4$  "8$   &               @($."   >&PO=V]R
M:W-H965T<R]S:&5E=#$N>&UL4$L! A0#%     @ SHJC6)^@&_"Q @  X@P
M  T              ( !F0P  'AL+W-T>6QE<RYX;6Q02P$"% ,4    " #.
MBJ-8EXJ[',     3 @  "P              @ %U#P  7W)E;',O+G)E;'-0
M2P$"% ,4    " #.BJ-8'#AEZC\!   \ @  #P              @ %>$
M>&PO=V]R:V)O;VLN>&UL4$L! A0#%     @ SHJC6"0>FZ*M    ^ $  !H
M             ( !RA$  'AL+U]R96QS+W=O<FMB;V]K+GAM;"YR96QS4$L!
M A0#%     @ SHJC6&60>9(9 0  SP,  !,              ( !KQ(  %M#
G;VYT96YT7U1Y<&5S72YX;6Q02P4&      D "0 ^ @  ^1,

end
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>9
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
// Edgar(tm) Renderer was created by staff of the U.S. Securities and Exchange Commission.  Data and content created by government employees within the scope of their employment are not subject to domestic copyright protection. 17 U.S.C. 105.
var Show={};Show.LastAR=null,Show.showAR=function(a,r,w){if(Show.LastAR)Show.hideAR();var e=a;while(e&&e.nodeName!='TABLE')e=e.nextSibling;if(!e||e.nodeName!='TABLE'){var ref=((window)?w.document:document).getElementById(r);if(ref){e=ref.cloneNode(!0);
e.removeAttribute('id');a.parentNode.appendChild(e)}}
if(e)e.style.display='block';Show.LastAR=e};Show.hideAR=function(){Show.LastAR.style.display='none'};Show.toggleNext=function(a){var e=a;while(e.nodeName!='DIV')e=e.nextSibling;if(!e.style){}else if(!e.style.display){}else{var d,p_;if(e.style.display=='none'){d='block';p='-'}else{d='none';p='+'}
e.style.display=d;if(a.textContent){a.textContent=p+a.textContent.substring(1)}else{a.innerText=p+a.innerText.substring(1)}}}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>10
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
/* Updated 2009-11-04 */
/* v2.2.0.24 */

/* DefRef Styles */
..report table.authRefData{
	background-color: #def;
	border: 2px solid #2F4497;
	font-size: 1em;
	position: absolute;
}

..report table.authRefData a {
	display: block;
	font-weight: bold;
}

..report table.authRefData p {
	margin-top: 0px;
}

..report table.authRefData .hide {
	background-color: #2F4497;
	padding: 1px 3px 0px 0px;
	text-align: right;
}

..report table.authRefData .hide a:hover {
	background-color: #2F4497;
}

..report table.authRefData .body {
	height: 150px;
	overflow: auto;
	width: 400px;
}

..report table.authRefData table{
	font-size: 1em;
}

/* Report Styles */
..pl a, .pl a:visited {
	color: black;
	text-decoration: none;
}

/* table */
..report {
	background-color: white;
	border: 2px solid #acf;
	clear: both;
	color: black;
	font: normal 8pt Helvetica, Arial, san-serif;
	margin-bottom: 2em;
}

..report hr {
	border: 1px solid #acf;
}

/* Top labels */
..report th {
	background-color: #acf;
	color: black;
	font-weight: bold;
	text-align: center;
}

..report th.void	{
	background-color: transparent;
	color: #000000;
	font: bold 10pt Helvetica, Arial, san-serif;
	text-align: left;
}

..report .pl {
	text-align: left;
	vertical-align: top;
	white-space: normal;
	width: 200px;
	white-space: normal; /* word-wrap: break-word; */
}

..report td.pl a.a {
	cursor: pointer;
	display: block;
	width: 200px;
	overflow: hidden;
}

..report td.pl div.a {
	width: 200px;
}

..report td.pl a:hover {
	background-color: #ffc;
}

/* Header rows... */
..report tr.rh {
	background-color: #acf;
	color: black;
	font-weight: bold;
}

/* Calendars... */
..report .rc {
	background-color: #f0f0f0;
}

/* Even rows... */
..report .re, .report .reu {
	background-color: #def;
}

..report .reu td {
	border-bottom: 1px solid black;
}

/* Odd rows... */
..report .ro, .report .rou {
	background-color: white;
}

..report .rou td {
	border-bottom: 1px solid black;
}

..report .rou table td, .report .reu table td {
	border-bottom: 0px solid black;
}

/* styles for footnote marker */
..report .fn {
	white-space: nowrap;
}

/* styles for numeric types */
..report .num, .report .nump {
	text-align: right;
	white-space: nowrap;
}

..report .nump {
	padding-left: 2em;
}

..report .nump {
	padding: 0px 0.4em 0px 2em;
}

/* styles for text types */
..report .text {
	text-align: left;
	white-space: normal;
}

..report .text .big {
	margin-bottom: 1em;
	width: 17em;
}

..report .text .more {
	display: none;
}

..report .text .note {
	font-style: italic;
	font-weight: bold;
}

..report .text .small {
	width: 10em;
}

..report sup {
	font-style: italic;
}

..report .outerFootnotes {
	font-size: 1em;
}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>12
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<XML>
<?xml version='1.0' encoding='utf-8'?>
<FilingSummary>
  <Version>3.24.1.u1</Version>
  <ProcessingTime/>
  <ReportFormat>html</ReportFormat>
  <ContextCount>1</ContextCount>
  <ElementCount>22</ElementCount>
  <EntityCount>1</EntityCount>
  <FootnotesReported>false</FootnotesReported>
  <SegmentCount>0</SegmentCount>
  <ScenarioCount>0</ScenarioCount>
  <TuplesReported>false</TuplesReported>
  <UnitCount>0</UnitCount>
  <MyReports>
    <Report instance="d835183d8k.htm">
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <HtmlFileName>R1.htm</HtmlFileName>
      <LongName>100000 - Document - Document and Entity Information</LongName>
      <ReportType>Sheet</ReportType>
      <Role>http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation</Role>
      <ShortName>Document and Entity Information</ShortName>
      <MenuCategory>Cover</MenuCategory>
      <Position>1</Position>
    </Report>
    <Report>
      <IsDefault>false</IsDefault>
      <HasEmbeddedReports>false</HasEmbeddedReports>
      <LongName>All Reports</LongName>
      <ReportType>Book</ReportType>
      <ShortName>All Reports</ShortName>
    </Report>
  </MyReports>
  <InputFiles>
    <File>adtn-20240503.xsd</File>
    <File>adtn-20240503_lab.xml</File>
    <File>adtn-20240503_pre.xml</File>
    <File doctype="8-K" isOnlyDei="true" original="d835183d8k.htm">d835183d8k.htm</File>
  </InputFiles>
  <SupplementalFiles/>
  <BaseTaxonomies>
    <BaseTaxonomy items="22">http://xbrl.sec.gov/dei/2023</BaseTaxonomy>
  </BaseTaxonomies>
  <HasPresentationLinkbase>true</HasPresentationLinkbase>
  <HasCalculationLinkbase>false</HasCalculationLinkbase>
</FilingSummary>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>14
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
{
 "version": "2.2",
 "instance": {
  "d835183d8k.htm": {
   "nsprefix": "adtn",
   "nsuri": "http://www.adtran.com/20240503",
   "dts": {
    "schema": {
     "local": [
      "adtn-20240503.xsd"
     ],
     "remote": [
      "http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xl-2003-12-31.xsd",
      "http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
      "http://www.xbrl.org/2005/xbrldt-2005.xsd",
      "http://www.xbrl.org/dtr/type/nonNumeric-2009-12-16.xsd",
      "http://www.xbrl.org/dtr/type/numeric-2009-12-16.xsd",
      "https://www.xbrl.org/dtr/type/2022-03-31/types.xsd",
      "https://xbrl.sec.gov/dei/2023/dei-2023.xsd",
      "https://xbrl.sec.gov/naics/2023/naics-2023.xsd"
     ]
    },
    "labelLink": {
     "local": [
      "adtn-20240503_lab.xml"
     ]
    },
    "presentationLink": {
     "local": [
      "adtn-20240503_pre.xml"
     ]
    },
    "inline": {
     "local": [
      "d835183d8k.htm"
     ]
    }
   },
   "keyStandard": 22,
   "keyCustom": 0,
   "axisStandard": 0,
   "axisCustom": 0,
   "memberStandard": 0,
   "memberCustom": 0,
   "hidden": {
    "total": 2,
    "http://xbrl.sec.gov/dei/2023": 2
   },
   "contextCount": 1,
   "entityCount": 1,
   "segmentCount": 0,
   "elementCount": 23,
   "unitCount": 0,
   "baseTaxonomies": {
    "http://xbrl.sec.gov/dei/2023": 22
   },
   "report": {
    "R1": {
     "role": "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation",
     "longName": "100000 - Document - Document and Entity Information",
     "shortName": "Document and Entity Information",
     "isDefault": "true",
     "groupType": "document",
     "subGroupType": "",
     "menuCat": "Cover",
     "order": "1",
     "firstAnchor": {
      "contextRef": "duration_2024-05-03_to_2024-05-03",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d835183d8k.htm",
      "first": true,
      "unique": true
     },
     "uniqueAnchor": {
      "contextRef": "duration_2024-05-03_to_2024-05-03",
      "name": "dei:DocumentType",
      "unitRef": null,
      "xsiNil": "false",
      "lang": "en-US",
      "decimals": null,
      "ancestors": [
       "span",
       "p",
       "div",
       "div",
       "body",
       "html"
      ],
      "reportCount": 1,
      "baseRef": "d835183d8k.htm",
      "first": true,
      "unique": true
     }
    }
   },
   "tag": {
    "dei_AmendmentFlag": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "AmendmentFlag",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Amendment Flag",
        "terseLabel": "Amendment Flag",
        "documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission."
       }
      }
     },
     "auth_ref": []
    },
    "dei_CityAreaCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "CityAreaCode",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "City Area Code",
        "terseLabel": "City Area Code",
        "documentation": "Area code of city"
       }
      }
     },
     "auth_ref": []
    },
    "dei_CoverAbstract": {
     "xbrltype": "stringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "CoverAbstract",
     "lang": {
      "en-us": {
       "role": {
        "label": "Cover [Abstract]",
        "terseLabel": "Cover [Abstract]",
        "documentation": "Cover page."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentPeriodEndDate": {
     "xbrltype": "dateItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "DocumentPeriodEndDate",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Period End Date",
        "terseLabel": "Document Period End Date",
        "documentation": "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."
       }
      }
     },
     "auth_ref": []
    },
    "dei_DocumentType": {
     "xbrltype": "submissionTypeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "DocumentType",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Document Type",
        "terseLabel": "Document Type",
        "documentation": "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'."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressAddressLine1": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "EntityAddressAddressLine1",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Address Line One",
        "terseLabel": "Entity Address, Address Line One",
        "documentation": "Address Line 1 such as Attn, Building Name, Street Name"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressCityOrTown": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "EntityAddressCityOrTown",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, City or Town",
        "terseLabel": "Entity Address, City or Town",
        "documentation": "Name of the City or Town"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressPostalZipCode": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "EntityAddressPostalZipCode",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, Postal Zip Code",
        "terseLabel": "Entity Address, Postal Zip Code",
        "documentation": "Code for the postal or zip code"
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityAddressStateOrProvince": {
     "xbrltype": "stateOrProvinceItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "EntityAddressStateOrProvince",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Address, State or Province",
        "terseLabel": "Entity Address, State or Province",
        "documentation": "Name of the state or province."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityCentralIndexKey": {
     "xbrltype": "centralIndexKeyItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "EntityCentralIndexKey",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Central Index Key",
        "terseLabel": "Entity Central Index Key",
        "documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK."
       }
      }
     },
     "auth_ref": [
      "r1"
     ]
    },
    "dei_EntityEmergingGrowthCompany": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "EntityEmergingGrowthCompany",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Emerging Growth Company",
        "terseLabel": "Entity Emerging Growth Company",
        "documentation": "Indicate if registrant meets the emerging growth company criteria."
       }
      }
     },
     "auth_ref": [
      "r1"
     ]
    },
    "dei_EntityFileNumber": {
     "xbrltype": "fileNumberItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "EntityFileNumber",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity File Number",
        "terseLabel": "Entity File Number",
        "documentation": "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."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityIncorporationStateCountryCode": {
     "xbrltype": "edgarStateCountryItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "EntityIncorporationStateCountryCode",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Incorporation State Country Code",
        "terseLabel": "Entity Incorporation State Country Code",
        "documentation": "Two-character EDGAR code representing the state or country of incorporation."
       }
      }
     },
     "auth_ref": []
    },
    "dei_EntityRegistrantName": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "EntityRegistrantName",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Registrant Name",
        "terseLabel": "Entity Registrant Name",
        "documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC."
       }
      }
     },
     "auth_ref": [
      "r1"
     ]
    },
    "dei_EntityTaxIdentificationNumber": {
     "xbrltype": "employerIdItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "EntityTaxIdentificationNumber",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Entity Tax Identification Number",
        "terseLabel": "Entity Tax Identification Number",
        "documentation": "The Tax Identification Number (TIN), also known as an Employer Identification Number (EIN), is a unique 9-digit value assigned by the IRS."
       }
      }
     },
     "auth_ref": [
      "r1"
     ]
    },
    "dei_LocalPhoneNumber": {
     "xbrltype": "normalizedStringItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "LocalPhoneNumber",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Local Phone Number",
        "terseLabel": "Local Phone Number",
        "documentation": "Local phone number for entity."
       }
      }
     },
     "auth_ref": []
    },
    "dei_PreCommencementIssuerTenderOffer": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "PreCommencementIssuerTenderOffer",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pre Commencement Issuer Tender Offer",
        "terseLabel": "Pre Commencement Issuer Tender Offer",
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r3"
     ]
    },
    "dei_PreCommencementTenderOffer": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "PreCommencementTenderOffer",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Pre Commencement Tender Offer",
        "terseLabel": "Pre Commencement Tender Offer",
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r4"
     ]
    },
    "dei_Security12bTitle": {
     "xbrltype": "securityTitleItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "Security12bTitle",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Security 12b Title",
        "terseLabel": "Security 12b Title",
        "documentation": "Title of a 12(b) registered security."
       }
      }
     },
     "auth_ref": [
      "r0"
     ]
    },
    "dei_SecurityExchangeName": {
     "xbrltype": "edgarExchangeCodeItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "SecurityExchangeName",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Security Exchange Name",
        "terseLabel": "Security Exchange Name",
        "documentation": "Name of the Exchange on which a security is registered."
       }
      }
     },
     "auth_ref": [
      "r2"
     ]
    },
    "dei_SolicitingMaterial": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "SolicitingMaterial",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Soliciting Material",
        "terseLabel": "Soliciting Material",
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as soliciting material pursuant to Rule 14a-12 under the Exchange Act."
       }
      }
     },
     "auth_ref": [
      "r5"
     ]
    },
    "dei_TradingSymbol": {
     "xbrltype": "tradingSymbolItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "TradingSymbol",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Trading Symbol",
        "terseLabel": "Trading Symbol",
        "documentation": "Trading symbol of an instrument as listed on an exchange."
       }
      }
     },
     "auth_ref": []
    },
    "dei_WrittenCommunications": {
     "xbrltype": "booleanItemType",
     "nsuri": "http://xbrl.sec.gov/dei/2023",
     "localname": "WrittenCommunications",
     "presentation": [
      "http://www.adtran.com//20240503/taxonomy/role/DocumentDocumentAndEntityInformation"
     ],
     "lang": {
      "en-us": {
       "role": {
        "label": "Written Communications",
        "terseLabel": "Written Communications",
        "documentation": "Boolean flag that is true when the Form 8-K filing is intended to satisfy the filing obligation of the registrant as written communications pursuant to Rule 425 under the Securities Act."
       }
      }
     },
     "auth_ref": [
      "r6"
     ]
    }
   }
  }
 },
 "std_ref": {
  "r0": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b"
  },
  "r1": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "b-2"
  },
  "r2": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "12",
   "Subsection": "d1-1"
  },
  "r3": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "13e",
   "Subsection": "4c"
  },
  "r4": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Number": "240",
   "Section": "14d",
   "Subsection": "2b"
  },
  "r5": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Exchange Act",
   "Section": "14a",
   "Number": "240",
   "Subsection": "12"
  },
  "r6": {
   "role": "http://www.xbrl.org/2003/role/presentationRef",
   "Publisher": "SEC",
   "Name": "Securities Act",
   "Number": "230",
   "Section": "425"
  }
 }
}
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>15
<FILENAME>0001193125-24-130896-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
begin 644 0001193125-24-130896-xbrl.zip
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MMBM7-\1L>XK;F_ZT-U?-MJ&?OP%02P,$%     @ SHJC6!1H&6];!@  OD,
M !4   !A9'1N+3(P,C0P-3 S7VQA8BYX;6S-G%UOVS84AN\+]#^<>3<;4-EQ
MTE[$2%ID3C($RQ<2=QLV#(4L,38QB31(.;'__4A]-'),R51X-.6BK2*=\Y[S
MRL]1:5G.T9=5',$C$9)R=MP;]O=Z0%C 0\IFQ[VE]'P94-H#F?@L]"/.R'%O
M363OR^?W[XY^\#PX/;^X!@_F2;*0H\'@Z>FI'SY0)GFT3)2D[ <\'H#G%?'C
MR5?X/2LW@CL2$5\2B'V9$ &_+&D4CO;W]@^&>\/]_GXY31!?ZT'H)V0$GP8'
M Q7W$8;#T<?#T:<AW%[!6:K"8$)C4D[EB[6@LWD"/P4_0YIURADC4436<$Z9
MSP+J1W!?=/P!+EC0AY,H@CN=)E6;DHA'$O9SU8BR?T?ZKZEN'MZ_ U!GD<ET
MWW%/GXO\5*RF(NIS,5/-[AT,BI3><\9J*^7I($T8'AX>#M*CY6A)3;%*?#CX
M\^KR/IB3V/?4V5>O5I"7D70DT_V7/$A/H46#4!FA?_**,$_O\H;[WL&POY)A
M[[,NF)\=?TJB2[4%J8>1X!&I*:P/I]5[>7RR7JAXLDH("TFN_%V;!WG47)"'
M3%6SETI*$O1G_'$0$JH).= ;GM[0'?ZH?O@VY@KWDZE,A!\DF_4B?8JX*':F
M)HY[AJ3!9D,Z[D0$&UJ^" H=M;G#?QXQ"+AZW1:)ERH6Z0^"Q\8N\G+<</!;
M-(V,;6J2U):>;L*\K_>[O&9"96."2+X4"J\F+VWJYW.J#'\7VO\<#9YKOY56
MU25$DLNF_;HA>1(KS-6?Y#SR9[9(ODCJ"$ESZ]QPT 5)@Q 2DM^504L[ ]E"
MHV4@;;MUP_&,)319CU49X4<7Z@*\^HVL;;&L2.X(SWHKO";(!=<:021LLPJ0
MEX"T!J@BS@"WV'H9Y.;]NR%]RH.EGIN)ZMZ6Y,V<C@ V-LZWC[G@NJV#1&DA
M#%K9&4W\-LM$6O:*@^$M$92'9RP\56]GFO+X(KEC,,U6>$T0!JH&06QFLQ*@
M:H N@H9O"ZT;.;;N'V.Q<$=F5"^267+MQ]9$FW,[72I4&.'5,>X+!9,>[CKA
MN0+H$DBKA#;Z-BP2K)O' /F"!5PLN$AOE=PG:G#&?*D6*>LQ#QMRO4.J4\SM
M;'+K%/<AL)#'G8F-@I!6A+PDZ)I(0_(_^#+,S.O-80S1.8W(]3*>$M%L8LIY
MG8Z'P0 W'W<'_Z46+N5:'3)Y)*"Q^S70:]4T!J@3?W41JL42?:#9S?'74%LI
MTBG"NZQQBV!WN&N%<4E7I6"S%B[WK5HQ#,$K_&",Q$D8*@,R_^>2,C)L-@Y&
M@4Y'H<X2WQ'H/@*5HKCXY_H?B@W0E>"&8:UC6K-A0/\57A#1'ZO-&S'A3^Q5
MX)?3WP+V!CLFZ)_#T)!_*=D2\+H,< &Z$"[LV ;J4+=S@8AY^J;@1MP*_DA9
MT/"];97&6P"^RIB)^A>Q:.@;=5OB/WMWI] IJN$.02M6ZB:A@1_$<;CE,O&C
MO^BB^8T>L\);& 6S*=,@;$2BC8%!M:4AR"J!*H5Y\Z8]&W4#8.W%\4$H;5 0
MOPGPFSE=/09E:IQO'W-Z"&I+!PG<]/]YK8S#*7Z?&P] 63;K!J)^,C&ZG7/6
M\*;A=EY'0%8:X.;C+F":M9#@3,4A5<>Z>=).OV5(FS3M!NH?@B8)86,>QTN6
MWY21MK16)'>$;+T57A/D F^-(!+!>078+.%,<8N-EU%NVKT;SO<\H@%-*)M=
MJ16WH'YDR[(ILR.0:TSPJ@@7A*O4D/A]EH="WQG>MEHND]NH;S=L;P71\T$4
M%NGC8/HK N+FX<%^X5"GT!'&%J;XKD@7K'>I(N&MRD"Y#F2%(*WD#'K;)LK
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MA7SZ4AO*_V3S\T]-RR-XPG'/M:-XX0U%NYYT%-!SN!4UU255].G8^+/A8O\
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M^3]LA5Q'!Z5YP 9[Q^3FB'VR]_]AR]]02P,$%     @ SHJC6-/N-2W $P
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MBTB$C<S7KH@B,=1/ND("Z<D3)QP3)7SND9^J^J=P_L^?G,/JZ5DES!MH?_5
MM6</E.FV#IV0Q0F0'BQ-2?&_6,,Y3K_WZ)#[D\8='S)%KMB(W(HA#4YUV<C0
MW16^=[ID>;Y>7=ZU+TCGKGG7[N234WTE<CKMUM?;R[O+=H<TKRY(^[?6I^;5
MQS9I77_Y<MGI7%Y?O8C&VB9H_&^S\^GRZN/=]5617)1;95*K'M1/YNC*#+J.
M9,X*Q"J-6BJ9A\^2S'(5JLT*YZG1TIKS\^+LU]32Z602([%LP9S7DJH/U[=?
MR)D*:9 :H@&/6 F>N R<Y4C2L'">"R$NA!LC@LA@F&<@B /P(QHKS?KGLPK2
M=?Y#?+8B/AM1>#!)M^VK.W+;OKF^O7M[ W032Q73("*1(!WFH@ 29Y\(29R#
M76_O[0D4/1(-&-(62QYQ:-\>NP,:]!EINA&!8N=DOYY/YZNM+,(@).>6A4)&
M9#?YSBC (*8BPAZ@)I&ZF'E[C?PX(S$2-QI+M0W$>K*U,!$?6HRHX4$'0V@^
M\.AD A2Q(&M-ZH7S+W1"]HL$VR]:E1_F9//FI%;?A-#EBI )!6]9GRL,_Z,K
M*'F!OSDHG#<O[FZ;5^034,*#OBJ2R\ MKY"5I]F+ZB8XLML>4[ +R FCC0D'
M"%6D$S(7PR2/\(!<1HJT!A#J,#EOYW[(>(Z,OX0Q.V<1[?J,N,SW$2UAQK-0
M+>CO(?6\Y+L=RD[5%;Y/0\4:R8?'120C3PCW##.<:O5GR[I&U5+9J"91(- E
M]6]O-K3<K_^,68!LP0.3$7>I;[EJ)CI?R;:NK=<Z(7&A=K:;LXHE42:E(>VS
M4E<R>H\Y3HC_&_1!@!2LS1U'+\_,B"0C,&1&8AI:5LC<!&#9P0)EH?"\@JXT
M4&!#A 2'J"U1)P(OU1)Q$,E)2W@O\GB8%\5$1L1"*1YPV%F7=P@.F_ET!*XP
M%T5'WCJKGXKX?/6ML//9@8?A]P?N,RCK@B5ZOC,XPA244ZH[]?IA+O/^OCR\
MH^-+FV]S-=->S-!CB.:.2C7GL+XDZ;J$HULP!\>O8@UVM8IC='$-H%Z2_P-,
MKSRNPXZSKJP@VI\Q"7MO*DC/13(;233LML1PR!7N$SX)53E;H 7-!C%BOF=P
MP3>HU[N7MQW2'H:^F#"II6E63<F5*.\MJ!'\0E3RO8(<3>%+4,Y!=2,XI7[\
MC>.4MXU*5KB4IN=)II3]\QGB N<%[N2D<'Y2=4A[#*H@P<J^%['/'JCT7A2M
M.6_'EQ9\O)9W8A0\GRN'U<+Y)X"6ZH'[_@+F*^8G8V8HT?[K6MX IN1Z0WQK
M"/70@9#;IUTZI,N6[=4M<-+?R_"^9>.-@(G[_^/ALV#^E$>UPOG^P7'UL%0[
MKAX]AN._7\1D.8:YC!L),L=#ZH-J,S>.^ ,CUSUP;TR]+4Y:-0=8:((KO9;W
M?6+N=B-F:)HE^N=/QS7GZ%21.^:S<"""!/?H?)<?HP,G31 ;/:%'<KAHL[#>
M"R5\']@'T>K>JJ,BTX$_"UB=&Z3\I7')81T<R>%^Z;A:K:[O.M98M,W@XP]@
M2\&[7>E,GR3VJ]67(N$]S.X%?>:1#MIJ\IFJR&;G?^3[MK-%MDH9"^>M 7/O
M]8X.#<'OA9)C0-@58])EOACAJF$A+B8Y+OU*>MQ'C>.*<#SNY<%J1H(H/HS]
MB 9,Q,J?$ 4BK7H3W=(V$%W@@X']=@=)3C/!,?0C"0TF25D/8+<883OTQ1QC
M+M7(E9'#YP8%&P7]*=*?HO_%,&,N#%G+!1:6XON?3Y=:_CPK]%_)(U@OC&'C
MP 9@ZL5PJ2N$WZ6P5A%(3-92'2"_3X[J]=-%0[7"(\Y'!V1V:<F+'=#<X:3"
MN>4-,"/+'!)FMF)O ;&3>NW BNK<#BAN?.XZ1Z3UX9;4]JMEJ#@-RU='M3_D
M=[7\=L#&NL#MH/\%#!18*7][PGOX/0GOE#'0M>',HN0Z=5IR:AGAG=FS3T6W
M7BV;FC^D=[/2>R,96EX\MJH/&Z'CE! J/ ,-KBW%1]^3% .#2FZ&0RMML5/W
M2K7=[MYZ,FWJ_I#JK4KUI5(QDZ\BV\=_;]G>9Z7ZKKN>;-NZJV5[XZ%#!@ 9
M+,\D1 /AL@-L6E,MMH<9Y$/Y;S_!_^,4PX:3<&N$U#E37+)5_*:[<G=X4<H<
M,70'Q/6I4J^3&GXN"]^:7Y*B>NJMP<YD"-5VU2MM9[X"Q[:18[NRI^BT@#'K
M$]Y\-QHL/.@B4#1U [/>Z-O<@<R/-8UCFSBUKE;I%V1L3PKG")& 0YU(N/=%
M<D,E^0_U8T;^42U7'1+B_;+!TE-/;[)SD,<3JZM&39_/D*.J/KAZ]8W/-I&
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M U2%\X65WMH+M_#E&ISU,JDI\W*@.?G*!])G%?,_)NG_3.G\_P%02P,$%
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M&8EL8>PMNS$JI[PYYL3,'_K%BF2?%623C7'4)Y(UB<3*.['I'7=...?_77
M >6>"8*4NVJE!(W.G:*@C84'>33'30 5B\@*[@0YLP$JY?GHQ!&-;T6&N%.8
M5?)OS[PZKBF4G$*Q=S(B7IH[&2-=+A6:6,3B7! "2(@VB8Q8KB-A,RYUM@RR
M /9+G</)*'>H$3PK]1U",!8;XC^QZ-G;?'Y-)F@WT%2"QYY-2([4 9Z8D;PQ
MDPHJ/H2GC',/"=IDZ>\XGH@BKTTVS +IT:WJ;&X6XD[8>ID=3X8EP+#6$\ZR
M:9[E5E0K7D")Y "65CQ\<V1O2Z-W),^[;&$%,/N':,]7:_DZYH SF^7(])?*
MM:C5&*Z"*2B&92C60@_^@=L(&-=*0L=$$+[(( 1.2I9KXIA7/=!;@ODS*[S*
M!9H\<_LX\[37' P=F4S0/,&M9_LOQB[P;^/2F%NZOEFK[R/STI-TBPUS5%?<
M2[*O:(DB!UM,M#TC%;LHB=YO5?B]T36"HH-N$\]_:CBYA:>:S_R.DF43H:28
MAEX/(<J3-*@<71M=K4@]I3DWF WL)IF\XQ+]5WF1V#ZXN4)SAU<H2)7'HDY%
MA3L&_"$:AKZUL<^N4K.C,-:2NTOK U4#;7?<+P]YF,,[&S%!LKY!=40DK_MU
M*Y3W"'ZACMP_ 6%GMI!FAJQ#1I%KY16_G,,TM5O4KB8BP!1I%/KWNAV$CD\]
M)I(ICJZ'=E^L^T3?W5N,3*[B8JE:"6LEO-L[0YO>7D,W@*IMKR5\N;V0*J[O
MK:#XX"17]Y9)$^Z;0&?Z\S.[3HC;>ROSC4"*-4K\O17:5*Q _IQ$.7);K2 V
MR+A;\9X8H<% :M1^HLSF!CW6H]UD5Z [TI(C/9N#,CT$X"C7>()DVY<S+*[&
M&11.+*=34'YJ35*<NLZ7KWF?S ?JFJ_G*+)3=&5FI;L-?JP[M10EU^B,L,/S
MU->5J5:"_D/F-V87*N:'RHK4>UT[M'M7K=17D 2SL7"1E9,08F) = R?D) O
MS2T&/0G3(!GN:TU07XO46&\3E94\W@=;^XW_ECV0?/DM=#BUK%;"4>ZKSOJM
MOCH,,"-&]- 09-"PV$1Y2!!.G4HEUD/_C8!N2I\-VC_X"U#JF8\YD9YU83PL
M!^)8NDAQF83ML1'.JX)OGAF_%7[0,!,E9T&5H<!Y2N\/Q&G,"]*%+?=(5*VL
MTK/J+7 4=^H83R*1TB"Z'N>A+CQ%'X^\RBN^"*>7;^"KN6[O?/@[&F3Q^:-:
M8?ZWFX(,2R6V&[E(/NN5M)2B<S0F&-1N&Q,!KT6'JP5?NAH&@KV4C%Q<LYOA
M_Y"=5[7R7/]YIO-=V__4V(?A^?CB3:VUO__]Z@O(V6 T'ES_ZS[0T"CR+D?^
MW#S@_"U&C'Z<6720>R^)7QZZGB;0][W%8M'DWG83<R$,OG_PZ].3Q I\4=<L
M03OAW^)E_RT:-VK]!B,^9MX'PGL24'\\/&2M]OXA.VJWV:O7Q]\@B2FQ-6J&
MWH$F^?-79/2IAO<1S;_^Y1TO-,[HU5LH=2+_G0*OG\Z_'G^#E-]DU."KE0_T
M?L\3]]Q)^/&PS8[I=Y\=';UF[=;QL_,,>2\A?33S.YH DG!U_A&+_O/[_P%0
M2P$"% ,4    " #.BJ-8,;XGZSP#  !&"P  $0              @ $
M861T;BTR,#(T,#4P,RYX<V102P$"% ,4    " #.BJ-8%&@9;UL&  "^0P
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:+FAT;5!+!08     !0 % $ !  ")*@     !

end
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>17
<FILENAME>d835183d8k_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
<XML>
<?xml version="1.0" encoding="utf-8"?>
<xbrl
  xmlns="http://www.xbrl.org/2003/instance"
  xmlns:dei="http://xbrl.sec.gov/dei/2023"
  xmlns:link="http://www.xbrl.org/2003/linkbase"
  xmlns:xlink="http://www.w3.org/1999/xlink">
    <link:schemaRef xlink:href="adtn-20240503.xsd" xlink:type="simple"/>
    <context id="duration_2024-05-03_to_2024-05-03">
        <entity>
            <identifier scheme="http://www.sec.gov/CIK">0000926282</identifier>
        </entity>
        <period>
            <startDate>2024-05-03</startDate>
            <endDate>2024-05-03</endDate>
        </period>
    </context>
    <dei:AmendmentFlag contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-242">false</dei:AmendmentFlag>
    <dei:EntityCentralIndexKey
      contextRef="duration_2024-05-03_to_2024-05-03"
      id="Hidden_dei_EntityCentralIndexKey">0000926282</dei:EntityCentralIndexKey>
    <dei:DocumentType contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-253">8-K</dei:DocumentType>
    <dei:DocumentPeriodEndDate contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-254">2024-05-03</dei:DocumentPeriodEndDate>
    <dei:EntityRegistrantName contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-255">ADTRAN Holdings, Inc.</dei:EntityRegistrantName>
    <dei:EntityIncorporationStateCountryCode contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-256">DE</dei:EntityIncorporationStateCountryCode>
    <dei:EntityFileNumber contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-257">001-41446</dei:EntityFileNumber>
    <dei:EntityTaxIdentificationNumber contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-258">87-2164282</dei:EntityTaxIdentificationNumber>
    <dei:EntityAddressAddressLine1 contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-259">901 Explorer Boulevard</dei:EntityAddressAddressLine1>
    <dei:EntityAddressCityOrTown contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-260">Huntsville</dei:EntityAddressCityOrTown>
    <dei:EntityAddressStateOrProvince contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-261">AL</dei:EntityAddressStateOrProvince>
    <dei:EntityAddressPostalZipCode contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-262">35806-2807</dei:EntityAddressPostalZipCode>
    <dei:CityAreaCode contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-263">(256)</dei:CityAreaCode>
    <dei:LocalPhoneNumber contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-264">963-8000</dei:LocalPhoneNumber>
    <dei:WrittenCommunications contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-265">false</dei:WrittenCommunications>
    <dei:SolicitingMaterial contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-266">false</dei:SolicitingMaterial>
    <dei:PreCommencementTenderOffer contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-267">false</dei:PreCommencementTenderOffer>
    <dei:PreCommencementIssuerTenderOffer contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-268">false</dei:PreCommencementIssuerTenderOffer>
    <dei:Security12bTitle contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-269">Common Stock, Par Value $0.01 per share</dei:Security12bTitle>
    <dei:TradingSymbol contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-270">ADTN</dei:TradingSymbol>
    <dei:SecurityExchangeName contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-271">NASDAQ</dei:SecurityExchangeName>
    <dei:EntityEmergingGrowthCompany contextRef="duration_2024-05-03_to_2024-05-03" id="ixv-272">false</dei:EntityEmergingGrowthCompany>
</xbrl>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
