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Receivables, net - Schedule of Receivables (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Receivables | $ 430,651 | $ 600,252
Less: allowance for credit losses | 821 | 1,547
Total net receivables | 429,830 | 598,705
Contracts completed and in progress: |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Billed | 191,530 | 343,190
Unbilled | 115,946 | 119,170
Receivables | 307,476 | 462,360
Materials sales |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Receivables | 43,816 | 61,808
Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Receivables | $ 79,359 | $ 76,084

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