CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 90,582	$ 75,452
Restricted cash	49,158	45,853
Accounts receivable, including retainage of $488,043 and $484,255	1,615,661	1,473,615
Costs and estimated earnings in excess of billings	858,356	905,175
Deferred income taxes	26,550	26,306
Other current assets	91,990	108,844
Total current assets	2,732,297	2,635,245
PROPERTY AND EQUIPMENT (net of accumulated depreciation of $265,195 and $254,477)	519,890	523,525
OTHER ASSETS:
GOODWILL	585,006	585,006
INTANGIBLE ASSETS, NET	95,654	96,540
OTHER ASSETS	198,635	196,361
TOTAL ASSETS	4,131,482	4,036,677
CURRENT LIABILITIES:
Current maturities of long-term debt	99,970	88,917
Accounts payable, including retainage of $204,386 and $204,767	1,005,906	937,464
Billings in excess of costs and estimated earnings	285,582	288,311
Accrued expenses and other current liabilities	160,964	159,016
Total current liabilities	1,552,422	1,473,708
LONG-TERM DEBT, less current maturities (net of unamortized discount and debt issuance cost of $10,948 and $6,697)	725,763	728,767
DEFERRED INCOME TAXES	274,232	273,310
OTHER LONG-TERM LIABILITIES	138,734	140,665
Total liabilities	$ 2,691,151	$ 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 49,072,710 shares	$ 49,073	$ 49,073
Additional paid-in capital	1,039,070	1,035,516
Retained earnings	393,203	377,803
Accumulated other comprehensive loss	(41,015)	(42,165)
TOTAL STOCKHOLERS' EQUITY	1,440,331	1,420,227
TOTAL LIABILITIES AND STOCKHOLERS' EQUITY	$ 4,131,482	$ 4,036,677