Revenue (Tables)

3 Months Ended

Mar. 31, 2022

Revenue from Contract with Customer [Abstract]

Schedule Of Disaggregation Of Revenue

Revenue by Contract Type
(In thousands)	Three Months Ended						Three Months Ended
	March 31, 2022						March 31, 2021
	Treatment		Services		Total		Treatment		Services		Total
Fixed price	$	7,479	$	5,761	$	13,240	$	7,495	$	2,581	$	10,076
Time and materials		—		2,675		2,675		—		13,057		13,057
Total	$	7,479	$	8,436	$	15,915	$	7,495	$	15,638	$	23,133

Revenue by generator
(In thousands)	Three Months Ended						Three Months Ended
	March 31, 2022						March 31, 2021
	Treatment		Services		Total		Treatment		Services		Total
Domestic government	$	5,815	$	8,245	$	14,060	$	4,598	$	12,661	$	17,259
Domestic commercial		1,436		162		1,598		2,265		590		2,855
Foreign government		92		6		98		534		2,364		2,898
Foreign commercial		136		23		159		98		23		121
Total	$	7,479	$	8,436	$	15,915	$	7,495	$	15,638	$	23,133

Schedule Of Contract Liabilities

The Company’s contract liabilities consist of deferred revenues which represent advance payment from customers in advance of the completion of our performance obligation. The following table represents changes in our contract liabilities balances:

					Year-to-date			Year-to-date
(In thousands)	March 31, 2022		December 31, 2021		Change ($)			Change (%)
Contract liabilities
Deferred revenue	$	2,707	$	5,580	$	(2,873	)		(51.5	)%