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Revenue (Tables)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following tables present further disaggregation of our revenues by different categories for our Services and Treatment Segments:

Revenue by Contract Type
(In thousands)		Three Months Ended												Three Months Ended
		June 30, 2019												June 30, 2018
		Treatment				Services				Total				Treatment				Services				Total
Fixed price		$	10,094			$	2,709			$	12,803			$	9,146			$	718			$	9,864
Time and materials			―				4,332				4,332				―				3,296				3,296
Total		$	10,094			$	7,041			$	17,135			$	9,146			$	4,014			$	13,160

Revenue by Contract Type
(In thousands)		Six Months Ended												Six Months Ended
		June 30, 2019												June 30, 2018
		Treatment				Services				Total				Treatment				Services				Total
Fixed price		$	19,999			$	3,137			$	23,136			$	18,105			$	808			$	18,913
Time and materials			―				5,707				5,707				―				6,904				6,904
Total		$	19,999			$	8,844			$	28,843			$	18,105			$	7,712			$	25,817

Revenue by generator
(In thousands)		Three Months Ended												Three Months Ended
		June 30, 2019												June 30, 2018
		Treatment				Services				Total				Treatment				Services				Total
Domestic government		$	6,537			$	4,842			$	11,379			$	6,011			$	3,265			$	9,276
Domestic commercial			3,395				855				4,250				3,135				541				3,676
Foreign government			162				1,323				1,485				―				185				185
Foreign commercial			―				21				21				―				23				23
Total		$	10,094			$	7,041			$	17,135			$	9,146			$	4,014			$	13,160

Revenue by generator
(In thousands)		Six Months Ended												Six Months Ended
		June 30, 2019												June 30, 2018
		Treatment				Services				Total				Treatment				Services				Total
Domestic government		$	14,449			$	5,529			$	19,978			$	12,546			$	6,383			$	18,929
Domestic commercial			5,274				1,613				6,887				5,559				943				6,502
Foreign government			220				1,659				1,879				―				338				338
Foreign commercial			56				43				99				―				48				48
Total		$	19,999			$	8,844			$	28,843			$	18,105			$	7,712			$	25,817

Schedule of Contract Assets and Liabilities

The following table represents changes in our contract assets and contract liabilities balances:

										Year-to-date				Year-to-date
(In thousands)		June 30, 2019				December 31, 2018				Change ($)				Change (%)
Contract assets
Account receivables, net of allowance		$	7,747			$	7,735			$	12				0.2	%
Unbilled receivables - current			6,158				3,105				3,053				98.3	%
Contract liabilities
Deferred revenue		$	4,785			$	6,595			$	(1,810	)			(27.4	)%

X

- Definition

Tabular disclosure of contract balances and changes in contract balances.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130551-203045

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- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045

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