CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents ($104,955 and $103,850 related to variable interest entities ("VIEs"))	$ 348,366	$ 193,685
Restricted cash	80,974	8,416
Restricted investments	75,475	70,974
Accounts receivable ($106,085 and $91,090 related to VIEs)	1,565,909	1,354,519
Retainage receivable ($110,794 and $89,132 related to VIEs)	621,414	562,375
Costs and estimated earnings in excess of billings ($39,147 and $22,764 related to VIEs)	1,180,215	1,123,544
Other current assets ($56,504 and $58,128 related to VIEs)	239,614	197,473
Total current assets	4,111,967	3,510,986
PROPERTY AND EQUIPMENT ("P&E"), net of accumulated depreciation of $424,065 and $388,147 (net P&E of $17,634 and $49,919 related to VIEs)	485,861	509,685
GOODWILL	205,143	205,143
INTANGIBLE ASSETS, NET	131,391	155,270
OTHER ASSETS	107,894	104,693
TOTAL ASSETS	5,042,256	4,485,777
CURRENT LIABILITIES:
Current maturities of long-term debt, net of unamortized discount and debt issuance costs totaling $3,115 and $0	99,504	124,054
Accounts payable ($101,034 and $93,848 related to VIEs)	811,987	682,699
Retainage payable ($22,864 and $13,967 related to VIEs)	296,200	252,181
Billings in excess of costs and estimated earnings ($413,659 and $422,847 related to VIEs)	911,378	844,389
Accrued expenses and other current liabilities ($12,581 and $25,402 related to VIEs)	233,241	206,533
Total current liabilities	2,352,310	2,109,856
LONG-TERM DEBT, less current maturities, net of unamortized discount and debt issuance costs totaling $20,934 and $23,343	921,519	710,422
DEFERRED INCOME TAXES	58,416	35,686
OTHER LONG-TERM LIABILITIES	200,714	199,288
TOTAL LIABILITIES	3,532,959	3,055,252
COMMITMENTS AND CONTINGENCIES (NOTE 11)
Stockholders' equity:
Preferred stock - authorized 1,000,000 shares ($1 par value), none issued	0	0
Common stock - authorized 112,500,000 and 75,000,000 shares ($1 par value), issued and outstanding 50,827,205 and 50,278,816 shares	50,827	50,279
Additional paid-in capital	1,125,455	1,117,972
Retained earnings	386,890	313,991
Accumulated other comprehensive loss	(39,816)	(42,100)
Total stockholders' equity	1,523,356	1,440,142
Noncontrolling interests	(14,059)	(9,617)
TOTAL EQUITY	1,509,297	1,430,525
TOTAL LIABILITIES AND EQUITY	$ 5,042,256	$ 4,485,777