Contract Assets and Liabilities (Schedule of Contract Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Contract with Customer, Contract Asset, Contract Liability, and Receivable [Abstract]
Retention receivable	$ 549,736	$ 580,926
Costs and estimated earnings in excess of billings:
Claims	411,026	562,646
Unapproved change orders	461,825	512,831
Other unbilled costs and profits	93,400	68,369
Total costs and estimated earnings in excess of billings	966,251	1,143,846
Capitalized contract costs	93,118	117,913
Total contract assets	$ 1,609,105	$ 1,842,685

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 340
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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
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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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Amount of billed or unbilled claims or other similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of cost incurred on construction contract for unapproved change order, claim, or similar item subject to uncertainty.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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