CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Cash and cash equivalents	$ 316,499	$ 202,197
Accounts receivable	1,413,246	1,454,319
Retention receivable	542,301	568,881
Costs and estimated earnings in excess of billings	1,356,607	1,356,768
Other current assets	216,400	186,773
Accumulated depreciation	496,617	483,417
Property and equipment, net	425,966	429,645
Accounts payable	559,152	512,056
Retainage payable	228,690	268,945
Billings in excess of costs and estimated earnings	844,618	761,689
Accrued expenses and other current liabilities	199,412	210,017
Unamortized discount and debt issuance costs, non-current	$ 16,350	$ 17,109
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares issued (in shares)	0	0
Common stock, shares authorized (in shares)	112,500,000	112,500,000
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares issued (in shares)	51,200,161	51,095,706
Common stock, shares outstanding (in shares)	51,200,161	51,095,706
VIEs
Cash and cash equivalents	$ 167,391	$ 102,679
Accounts receivable	102,702	116,415
Retention receivable	169,106	162,259
Costs and estimated earnings in excess of billings	121,545	143,105
Other current assets	42,356	43,718
Property and equipment, net	4,595	2,203
Accounts payable	73,743	96,097
Retainage payable	38,461	37,007
Billings in excess of costs and estimated earnings	390,885	355,270
Accrued expenses and other current liabilities	$ 10,088	$ 8,566