Annual report pursuant to Section 13 and 15(d)

Revenue

Revenue

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenue

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

Revenue by Contract Type
(In thousands)	Twelve Months Ended						Tweleve Months Ended
	December 31, 2018						December 31, 2017
	Treatment		Services		Total		Treatment		Services		Total
Fixed price	$	36,271	$	1,575	$	37,846	$	37,750	$	714	$	38,464
Time and materials		―		11,693		11,693		―		11,305		11,305
Total	$	36,271	$	13,268	$	49,539	$	37,750	$	12,019	$	49,769

Revenue by generator
(In thousands)	Twelve Months Ended						Twelve Months Ended
	December 31, 2018						December 31, 2017
	Treatment		Services		Total		Treatment		Services		Total
Domestic government	$	25,181	$	9,630	$	34,811	$	27,956	$	9,063	$	37,019
Domestic commercial		10,970		2,521		13,491		9,794		1,800		11,594
Foreign government		114		1,019		1,133		―		1,073		1,073
Foreign commercial		6		98		104		―		83		83
Total	$	36,271	$	13,268	$	49,539	$	37,750	$	12,019	$	49,769

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:

(In thousands)	December 31, 2018		January 1, 2018		Year-to-date Change ($)			Year-to-date Change (%)
Contract assets
Account receivables, net of allowance	$	7,735	$	7,940	$	(205	)		(2.6	)%
Unbilled receivables - current		3,105		4,547		(1,442	)		(31.7	)%
Unbilled receivables - non-current		―		184		(184	)		(100.0	)%

Contract liabilities
Deferred revenue	$	6,595	$	5,083	$	1,512			29.7	%

During the twelve months ended December 31, 2018 and 2017, the Company recognized revenue of $8,071,000 and $5,105,000, respectively, which was included in the deferred revenue balance at the beginning of the year. Revenue recognized in each period related to performance obligations satisfied within the respective period.