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Revenue from Contract with Customers Schedule of Contract Receivables (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]    
Billed receivables $ 370,115 $ 312,991
Unbilled receivables 118,387 106,007
Allowance for doubtful accounts (12,467) (18,377)
Receivables-net $ 476,035 $ 400,621