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Accounts Receivable and Allowance for Expected Credit Losses - Accounts Receivable, Net (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Accounts receivable:    
Billed receivables $ 824,634 $ 745,371
Unbilled receivables 435,247 421,488
Allowance for expected credit losses (75,406) (64,717)
Accounts receivable, net $ 1,184,475 $ 1,102,142