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Contract Assets and Liabilities - Summary of contract assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Contractors [Line Items]
Unbilled revenue, net	$ 172,618		$ 149,449
Contract retainages, net	169,012		152,493
Contract assets, net	341,630		$ 301,942
Changes in contract assets, net, Change	39,618	$ 30,962
Change
Contractors [Line Items]
Unbilled revenue, net, Change	23,169
Contract retainages, net, Change	16,519
Changes in contract assets, net, Change	$ 39,688

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The increase (decrease) during the reporting period of the amount of contract receivable retainage.

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The amount of contract with customer, increase (decrease) during the reporting period of the amount of revenue for work performed for which billing has not occurred, net of uncollectible accounts.

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Amount of right to consideration in exchange for good or service transferred to customer withheld under retainage provision in long-term contract or program when right to consideration is unconditional.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 910
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 7
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 210
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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
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-Section 45
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-URI https://asc.fasb.org/1943274/2147479837/606-10-45-3

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Amount of increase (decrease) in right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
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Unbilled amounts due for services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the entity and, at a minimum, one other party. An example would be amounts associated with contracts or programs where the recognized revenue for performance thereunder exceeds the amounts billed under the terms thereof as of the date of the balance sheet.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 912
-SubTopic 310
-Name Accounting Standards Codification
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