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Receivables, net - Major Categories of Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross receivables	$ 512,511	$ 600,252
Less: allowance for credit losses	769	1,547
Total net receivables	511,742	598,705
Contracts completed and in progress:
Accounts, Notes, Loans and Financing Receivable [Line Items]
Billed	250,656	343,190
Unbilled	127,776	119,170
Total gross receivables	378,432	462,360
Materials sales
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross receivables	55,770	61,808
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total gross receivables	$ 78,309	$ 76,084

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Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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