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Accounts Receivable (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Accounts Receivable    
Trade accounts receivable $ 62,284 $ 50,042
Unbilled accounts receivable 11,035 10,997
Accounts receivable, gross 73,319 61,039
Less allowance for doubtful accounts (162) (86)
Accounts receivable, net $ 73,157 $ 60,953