XML 40 R29.htm IDEA: XBRL DOCUMENT v3.22.1
Accounts Receivable and Contract Assets (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Accounts Receivable and Contract Assets [Abstract]    
Accounts receivable - customers $ 4,829 $ 5,034
Other receivables 457 455
Accounts receivable 5,286 5,489
Less: allowance for doubtful accounts (852) (855)
Accounts receivable, net 4,434 4,634
Unbilled revenue 3,044 $ 2,784
Change in accounts receivable - customers (205)  
Change in other receivables 2  
Change in accounts receivable (203)  
Change in allowance for doubtful accounts 3  
Change in accounts receivable, net (200)  
Change in unbilled revenue $ 260