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Receivables, net - Schedule of Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 472,078	$ 512,511
Less: allowance for credit losses	742	769
Total net receivables	471,336	511,742
Contracts completed and in progress:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Billed	211,878	250,656
Unbilled	126,837	127,776
Receivables	338,715	378,432
Materials sales
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	45,892	55,770
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 87,471	$ 78,309

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