CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 170,744	$ 75,452
Restricted cash	48,725	45,853
Accounts receivable, including retainage of $541,921and $484,255	1,718,685	1,473,615
Costs and estimated earnings in excess of billings	820,243	905,175
Deferred income taxes	26,029	26,306
Other current assets	65,511	108,844
Total current assets	2,849,937	2,635,245
PROPERTY AND EQUIPMENT (net of accumulated depreciation of $296,779 and $254,477)	492,328	523,525
OTHER ASSETS:
GOODWILL	585,006	585,006
INTANGIBLE ASSETS, NET	93,883	96,540
OTHER ASSETS	199,812	196,361
TOTAL ASSETS	4,220,966	4,036,677
CURRENT LIABILITIES:
Current maturities of long-term debt	108,897	88,917
Accounts payable, including retainage of $245,713 and $204,767	949,648	937,464
Billings in excess of costs and estimated earnings	334,055	288,311
Accrued expenses and other current liabilities	209,343	159,016
Total current liabilities	1,601,943	1,473,708
LONG-TERM DEBT, less current maturities (net of unamortized discount and debt issuance cost of $59,694 and $6,697)	684,202	728,767
DEFERRED INCOME TAXES	283,811	273,310
OTHER LONG-TERM LIABILITIES	126,966	140,665
Total liabilities	2,696,922	2,616,450
CONTINGENCIES AND COMMITMENTS (NOTE 6)
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 49,169,813 and 49,072,710 shares	49,202	49,073
Additional paid-in capital	1,072,811	1,035,516
Retained earnings	443,364	377,803
Accumulated other comprehensive loss	(41,333)	(42,165)
TOTAL STOCKHOLERS' EQUITY	1,524,044	1,420,227
TOTAL LIABILITIES AND STOCKHOLERS' EQUITY	$ 4,220,966	$ 4,036,677