Basis of Presentation and Summary of Significant Accounting Policies - Summary of Accounts Receivable (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024	Dec. 31, 2023
Product Information [Line Items]
Other	$ 7,561	$ 8,120
Receivables, gross	746,927	597,125
Less: allowance for expected credit losses	(3,192)	(7,097)
Receivables, net	743,735	590,028	$ 449,626
Completed contracts
Product Information [Line Items]
Trade receivables	38,225	42,462
Contracts in progress
Product Information [Line Items]
Trade receivables	$ 701,141	$ 546,543

Receivables, Allowance For Credit Loss, Current

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- Definition

Receivables, Gross, Current

+ References

No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(1))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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-Topic 210
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-Section 45
-Paragraph 1
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-Publisher FASB
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- Definition

Amount, before allowance, of receivables classified as other, due within one year or the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3)(a)(4))
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-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

+ References

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-Topic 852
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