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Accounts Receivable and Contract Assets (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2022
Dec. 31, 2021
Accounts Receivable and Contract Assets [Abstract]    
Accounts receivable - customers $ 5,873 $ 5,034
Other receivables 422 455
Accounts receivable 6,295 5,489
Less: allowance for doubtful accounts (834) (855)
Accounts receivable, net 5,461 4,634
Unbilled revenue 3,084 $ 2,784
Change in accounts receivable - customers 839  
Change in other receivables (33)  
Change in accounts receivable 806  
Change in allowance for doubtful accounts 21  
Change in accounts receivable, net 827  
Change in unbilled revenue $ 300