CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents ($110,447 and $43,131 related to variable interest entities ("VIEs"))	$ 207,130	$ 116,075
Restricted cash	6,261	3,788
Restricted investments	67,728	58,142
Accounts receivable ($142,749 and $62,482 related to VIEs)	1,460,450	1,261,072
Retainage receivable ($73,424 and $36,724 related to VIEs)	542,274	478,744
Costs and estimated earnings in excess of billings	1,159,333	1,142,295
Other current assets ($36,859 and $30,185 related to VIEs)	162,406	115,527
Total current assets	3,605,582	3,175,643
PROPERTY AND EQUIPMENT ("P&E"), net of accumulated depreciation of $375,717 and $343,735 (net P&E of $54,729 and $51,508 related to VIEs)	509,986	490,669
GOODWILL	205,143	585,006
INTANGIBLE ASSETS, NET	83,254	85,911
OTHER ASSETS	90,943	50,523
TOTAL ASSETS	4,494,908	4,387,752
CURRENT LIABILITIES:
Current maturities of long-term debt	10,862	16,767
Accounts payable ($74,183 and $18,070 related to VIEs)	670,458	621,728
Retainage payable ($10,294 and $0 related to VIEs)	232,209	211,956
Billings in excess of costs and estimated earnings ($404,357 and $263,764 related to VIEs)	818,806	573,190
Accrued expenses and other current liabilities ($37,935 and $34,828 related to VIEs)	188,373	174,325
Total current liabilities	1,920,708	1,597,966
LONG-TERM DEBT, less current maturities, net of unamortized discounts and debt issuance costs totaling $26,358 and $34,998	825,382	744,737
DEFERRED INCOME TAXES	58,305	105,521
OTHER LONG-TERM LIABILITIES	186,965	151,639
TOTAL LIABILITIES	2,991,360	2,599,863
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 50,278,816 and 50,025,996 shares	50,279	50,026
Additional paid-in capital	1,113,987	1,102,919
Retained earnings	400,108	701,681
Accumulated other comprehensive loss	(42,294)	(45,449)
Total stockholders' equity	1,522,080	1,809,177
Noncontrolling interests	(18,532)	(21,288)
TOTAL EQUITY	1,503,548	1,787,889
TOTAL LIABILITIES AND EQUITY	$ 4,494,908	$ 4,387,752