CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
CURRENT ASSETS:
Cash and cash equivalents ($92,056 and $103,850 related to variable interest entities ("VIEs"))	$ 182,599	$ 193,685
Restricted cash	8,892	8,416
Restricted investments	75,382	70,974
Accounts receivable ($129,081 and $91,090 related to VIEs)	1,586,560	1,354,519
Retainage receivable ($98,304 and $89,132 related to VIEs)	581,495	562,375
Costs and estimated earnings in excess of billings ($26,392 and $22,764 related to VIEs)	1,149,103	1,123,544
Other current assets ($55,286 and $58,128 related to VIEs)	222,392	197,473
Total current assets	3,806,423	3,510,986
PROPERTY AND EQUIPMENT ("P&E"), net of accumulated depreciation of $417,575 and $388,147 (net P&E of $34,669 and $49,919 related to VIEs)	504,722	509,685
GOODWILL	205,143	205,143
INTANGIBLE ASSETS, NET	140,674	155,270
OTHER ASSETS	106,641	104,693
TOTAL ASSETS	4,763,603	4,485,777
CURRENT LIABILITIES:
Current maturities of long-term debt, net of unamortized discount and debt issuance costs totaling $11,911 and $0	320,790	124,054
Accounts payable ($110,676 and $93,848 related to VIEs)	770,515	682,699
Retainage payable ($19,589 and $13,967 related to VIEs)	278,045	252,181
Billings in excess of costs and estimated earnings ($434,608 and $422,847 related to VIEs)	962,446	844,389
Accrued expenses and other current liabilities ($16,212 and $25,402 related to VIEs)	209,576	206,533
Total current liabilities	2,541,372	2,109,856
LONG-TERM DEBT, less current maturities, net of unamortized discount and debt issuance costs totaling $5,190 and $23,343	515,629	710,422
DEFERRED INCOME TAXES	41,329	35,686
OTHER LONG-TERM LIABILITIES	201,132	199,288
TOTAL LIABILITIES	3,299,462	3,055,252
COMMITMENTS AND CONTINGENCIES (Note 11)
Stockholders' equity:
Preferred stock - authorized 1,000,000 shares ($1 par value), none issued
Common stock – authorized 75,000,000 shares ($1 par value), issued and outstanding 50,771,288 and 50,278,816 shares	50,771	50,279
Additional paid-in capital	1,124,672	1,117,972
Retained earnings	350,071	313,991
Accumulated other comprehensive loss	(40,597)	(42,100)
Total stockholders' equity	1,484,917	1,440,142
Noncontrolling interests	(20,776)	(9,617)
TOTAL EQUITY	1,464,141	1,430,525
TOTAL LIABILITIES AND EQUITY	$ 4,763,603	$ 4,485,777