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v3.19.1

Revenue (Tables) | 3 Months Ended
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Mar. 31, 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 |
|  | March 31, 2019 |  |  | March 31, 2018 |
|  | Treatment |  |  | Services |  |  | Total |  |  | Treatment |  |  | Services |  |  | Total |
Fixed price |  | $ | 9,905 |  |  | $ | 428 |  |  | $ | 10,333 |  |  | $ | 8,959 |  |  | $ | 90 |  |  | $ | 9,049 |
Time and materials |  |  | ― |  |  |  | 1,375 |  |  |  | 1,375 |  |  |  | ― |  |  |  | 3,609 |  |  |  | 3,609 |
Total |  | $ | 9,905 |  |  | $ | 1,803 |  |  | $ | 11,708 |  |  | $ | 8,959 |  |  | $ | 3,699 |  |  | $ | 12,658 |
Revenue by generator |  |  |
(In thousands) |  | Three Months Ended |  |  | Three Months Ended |
|  | March 31, 2019 |  |  | March 31, 2018 |
|  | Treatment |  |  | Services |  |  | Total |  |  | Treatment |  |  | Services |  |  | Total |
Domestic government |  | $ | 7,913 |  |  | $ | 686 |  |  | $ | 8,599 |  |  | $ | 6,536 |  |  | $ | 3,118 |  |  | $ | 9,654 |
Domestic commercial |  |  | 1,879 |  |  |  | 758 |  |  |  | 2,637 |  |  |  | 2,423 |  |  |  | 402 |  |  |  | 2,825 |
Foreign government |  |  | 57 |  |  |  | 337 |  |  |  | 394 |  |  |  | ― |  |  |  | 153 |  |  |  | 153 |
Foreign commercial |  |  | 56 |  |  |  | 22 |  |  |  | 78 |  |  |  | ― |  |  |  | 26 |  |  |  | 26 |
Total |  | $ | 9,905 |  |  | $ | 1,803 |  |  | $ | 11,708 |  |  | $ | 8,959 |  |  | $ | 3,699 |  |  | $ | 12,658 |
Schedule of Contract Assets and Liabilities | The following table represents changes in our contract assets and contract liabilities balances:
(In thousands) |  | March 31, 2019 |  |  | December 31, 2018 |  |  | Year-to-date Change ($) |  |  | Year-to-date Change (%) |
Contract assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Account receivables, net of allowance |  | $ | 7,341 |  |  | $ | 7,735 |  |  | $ | (394 | ) |  |  | (5.1 | )%
Unbilled receivables - current |  |  | 3,316 |  |  |  | 3,105 |  |  |  | 211 |  |  |  | 6.8 | %
Contract liabilities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Deferred revenue |  | $ | 5,443 |  |  | $ | 6,595 |  |  | $ | (1,152 | ) |  |  | (17.5 | )%

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- 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 + Details
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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 + Details
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