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Receivables - Schedule of Receivables (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Receivables [Abstract]    
Billed receivables $ 189,247 $ 227,718
Unbilled receivables (contract assets) 559,341 487,758
Other 11,225 13,106
Total receivables $ 759,813 $ 728,582