CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
CURRENT ASSETS:
Cash and cash equivalents ($60,562 and $43,131 related to variable interest entities ("VIEs"))	$ 149,881	$ 116,075
Restricted cash	4,742	3,788
Restricted investments	65,287	58,142
Accounts receivable ($94,807 and $62,482 related to VIEs)	1,469,213	1,261,072
Retainage receivable ($56,012 and $36,724 related to VIEs)	508,423	478,744
Costs and estimated earnings in excess of billings	1,165,408	1,142,295
Other current assets ($35,051 and $30,185 related to VIEs)	165,688	115,527
Total current assets	3,528,642	3,175,643
PROPERTY AND EQUIPMENT ("P&E"), net of accumulated depreciation of $362,350 and $343,735 (net P&E of $53,818 and $51,508 related to VIEs)	502,675	490,669
GOODWILL	205,143	585,006
INTANGIBLE ASSETS, NET	84,140	85,911
OTHER ASSETS	92,896	50,523
TOTAL ASSETS	4,413,496	4,387,752
CURRENT LIABILITIES:
Current maturities of long-term debt	14,414	16,767
Accounts payable ($36,524 and $18,070 related to VIEs)	685,745	621,728
Retainage payable	227,884	211,956
Billings in excess of costs and estimated earnings ($282,130 and $263,764 related to VIEs)	635,924	573,190
Accrued expenses and other current liabilities ($42,109 and $34,828 related to VIEs)	175,525	174,325
Total current liabilities	1,739,492	1,597,966
LONG-TERM DEBT, less current maturities, net of unamortized discounts and debt issuance costs totaling $29,305 and $34,998	941,763	744,737
DEFERRED INCOME TAXES	56,248	105,521
OTHER LONG-TERM LIABILITIES	186,434	151,639
TOTAL LIABILITIES	2,923,937	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	1,110,496	1,102,919
Retained earnings	380,795	701,681
Accumulated other comprehensive loss	(42,530)	(45,449)
Total stockholders' equity	1,499,040	1,809,177
Noncontrolling interests	(9,481)	(21,288)
TOTAL EQUITY	1,489,559	1,787,889
TOTAL LIABILITIES AND EQUITY	$ 4,413,496	$ 4,387,752