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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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