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Revenue | 6 Months Ended
--- | ---
Jun. 30, 2019
Revenue from Contract with Customer [Abstract] |
Revenue |
3. | Revenue
Disaggregation of Revenue In general, the Company’s business segmentation is aligned according to the nature and economic characteristics of our services and provides meaningful disaggregation of each business segment’s results of operations. The nature of the Company’s performance obligations within our Treatment and Services Segments result in the recognition of our revenue primarily over time. 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 |
Contract Balances The timing of revenue recognition, billings, and cash collections results in accounts receivable and unbilled receivables (contract assets). The Company’s contract liabilities consist of deferred revenues which represents advance payment from customers in advance of the completion of our performance obligation. 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 | )%
During the three and six months ended June 30, 2019, the Company recognized revenue of $2,866,000 and $7,446,000, respectively, which was included in the deferred revenue balance at the beginning of the year. During the three and six months ended June 30, 2018, the Company recognized revenue of $1,629,000 and $5,440,000, respectively, which was included in the deferred revenue balance at the beginning of the year. All revenue recognized in each period related to performance obligations satisfied within the respective period. Remaining Performance Obligations The Company applies the practical expedient in paragraph 606-10-50-14 and does not disclose information about remaining performance obligations that have original expected durations of one year or less.

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- References No definition available. + Details
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- Definition The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -URI http://asc.fasb.org/topic&trid=49130388 + Details
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