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Revenue
 6 Months Ended
Jun. 30, 2021
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, 2021   June 30, 2020 
   Treatment   Services   Total   Treatment   Services   Total 
Fixed price  $7,706   $1,482   $9,188   $7,840   $2,329   $10,169 
Time and materials   —    6,957    6,957    —    11,878    11,878 
Total  $7,706   $8,439   $16,145   $7,840   $14,207   $22,047 

 

Revenue by Contract Type                    
(In thousands)  Six Months Ended       Six Months Ended     
   June 30, 2021       June 30, 2020     
   Treatment   Services   Total   Treatment   Services   Total 
Fixed price  $15,201   $4,063   $19,264   $17,403   $3,721   $21,124 
Time and materials   —    20,014    20,014    —    25,783    25,783 
Total  $15,201   $24,077   $39,278   $17,403   $29,504   $46,907 

 

Revenue by generator                        
(In thousands)  Three Months Ended       Three Months Ended     
   June 30, 2021       June 30, 2020     
   Treatment   Services   Total   Treatment   Services   Total 
Domestic government  $5,639   $6,764   $12,403   $6,055   $12,791   $18,846 
Domestic commercial   2,060    391    2,451    1,785    431    2,216 
Foreign government   7    1,261    1,268    —    965    965 
Foreign commercial   —    23    23    —    20    20 
Total  $7,706   $8,439   $16,145   $7,840   $14,207   $22,047 

 

Revenue by generator                        
(In thousands)  Six Months Ended   Six Months Ended 
   June 30, 2021   June 30, 2020 
   Treatment   Services   Total   Treatment   Services   Total 
Domestic government  $10,237   $19,425   $29,662   $13,745   $26,589   $40,334 
Domestic commercial   4,328    981    5,309    3,658    893    4,551 
Foreign government   541    3,625    4,166    —    1,979    1,979 
Foreign commercial   95    46    141    —    43    43 
Total  $15,201   $24,077   $39,278   $17,403   $29,504   $46,907 

 

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:

 

   June 30,   December 31,   Year-to-date   Year-to-date 
(In thousands)  2021   2020   Change ($)   Change (%) 
Contract assets                    
Account receivables, net of allowance  $9,244   $9,659   $(415)   (4.3)%
Unbilled receivables - current   7,332    14,453    (7,121)   (49.3)%
                     
Contract liabilities                    
Deferred revenue  $3,932   $4,614   $(682)   (14.8)%

 

During the three and six months ended June 30, 2021, the Company recognized revenue of $1,763,000 and $6,074,000, respectively, related to untreated waste that was in the Company’s control as of the beginning of each respective year. During the three and six months ended June 30, 2020, the Company recognized revenue of $2,516,000 and $6,539,000, respectively, related to untreated waste that was in the Company’s control as of the beginning of each respective year. Revenue recognized in each period related to performance obligations satisfied within the respective period.

 

 

Remaining Performance Obligations

 

The Company applies the practical expedient in ASC 606-10-50-14 and does not disclose information about remaining performance obligations that have original expected durations of one year or less.

 

Within our Services Segment, there are service contracts which provide that the Company has a right to consideration from a customer in an amount that corresponds directly with the value to the customer of our performance completed to date. For those contracts, the Company has utilized the practical expedient in ASC 606-10-55-18, which allows the Company to recognize revenue in the amount for which we have the right to invoice; accordingly, the Company does not disclose the value of remaining performance obligations for those contracts.