Annual report pursuant to Section 13 and 15(d)

Receivables and Unbilled Receivables - Narrative (Details)

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Receivables and Unbilled Receivables - Narrative (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Receivables [Abstract]    
Allowance for doubtful accounts $ 1,700 $ 1,500
Government contracts receivable $ 3,600 $ 2,600