Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Supplemental Cash Flow Elements [Abstract]
Accounts receivable	$ 116,310	$ 276,450	$ (31,972)
Retention receivable	5,666	(20,017)	78,618
Costs and estimated earnings in excess of billings	233,682	(20,760)	(120,034)
Other current assets	(37,460)	8,516	62,371
Accounts payable	(28,800)	(15,783)	(283,482)
Retention payable	(23,424)	(22,383)	(46,190)
Billings in excess of costs and estimated earnings	127,718	214,123	(77,533)
Accrued expenses and other current liabilities	35,218	(29,722)	(4,005)
Changes in other components of working capital	428,910	390,424	(422,227)
Interest paid	80,286	64,764	63,762
Income taxes paid (refunded), net	828	9,952	(8,299)
Non-cash investing activities:
Receivable recognized from sale of subsidiary	$ 0	$ 0	$ 4,163