Consolidated Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Supplemental Cash Flow Elements [Abstract]
Accounts receivable	$ (31,972)	$ (104,901)	$ (81,983)
Retainage receivable	78,618	(85,769)	(78,520)
Costs and estimated earnings in excess of billings	(120,034)	(113,190)	18,751
Other current assets	62,371	(49,468)	(76,146)
Accounts payable	(283,482)	111,912	53,999
Retainage payable	(46,190)	62,954	35,013
Billings in excess of costs and estimated earnings	(77,533)	(5,168)	245,292
Accrued expenses and other current liabilities	(4,005)	13,654	14,851
Changes in other components of working capital	(422,227)	(169,976)	131,257
Interest paid	63,762	57,038	56,137
Income taxes paid (refunded), net	(8,299)	11,204	43,374
Non-cash investing activities:
Real property acquired in settlement of a receivable	0	11,660	0
Receivable recognized from sale of subsidiary	$ 4,163	$ 0	$ 0