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Receivables, net - Schedule of Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 638,089	$ 632,020
Less: allowance for credit losses	1,576	1,628
Total net receivables	636,513	630,392
Contracts completed and in progress:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Billed	296,246	297,157
Unbilled	186,466	174,434
Receivables	482,712	471,591
Materials sales
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	84,531	89,945
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Receivables	$ 70,846	$ 70,484

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