CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Cash and cash equivalents	$ 263,545	$ 259,351
Accounts receivable	1,226,636	1,171,085
Retention receivable	557,358	585,556
Costs and estimated earnings in excess of billings	1,224,663	1,377,528
Other current assets	165,760	179,215
Accumulated depreciation	520,109	505,512
Property and equipment, net	444,615	435,088
Accounts payable	487,769	495,345
Retention payable	226,036	246,562
Billings in excess of costs and estimated earnings	1,025,252	975,812
Accrued expenses and other current liabilities	196,450	179,523
Unamortized discount and debt issuance costs, non-current	$ 12,330	$ 13,980
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)	51,969,840	51,521,336
Common stock, shares outstanding (in shares)	51,969,840	51,521,336
VIEs
Cash and cash equivalents	$ 163,088	$ 168,408
Accounts receivable	80,770	54,040
Retention receivable	153,699	187,615
Costs and estimated earnings in excess of billings	72,051	83,911
Other current assets	30,813	33,340
Property and equipment, net	31,883	22,133
Accounts payable	33,178	36,484
Retention payable	32,589	44,859
Billings in excess of costs and estimated earnings	468,399	480,839
Accrued expenses and other current liabilities	$ 7,181	$ 5,082