CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 93,622	$ 75,452
Restricted cash	49,452	45,853
Accounts receivable, including retainage of $512,808 and $484,255	1,739,343	1,473,615
Costs and estimated earnings in excess of billings	811,406	905,175
Deferred income taxes	19,098	26,306
Other current assets	76,960	108,844
Total current assets	2,789,881	2,635,245
PROPERTY AND EQUIPMENT (net of accumulated depreciation of $280,059 and $254,477)	507,395	523,525
OTHER ASSETS:
GOODWILL	585,006	585,006
INTANGIBLE ASSETS, NET	94,768	96,540
OTHER ASSETS	218,535	196,361
TOTAL ASSETS	4,195,585	4,036,677
CURRENT LIABILITIES:
Current maturities of long-term debt	120,256	88,917
Accounts payable, including retainage of $222,175 and $204,767	968,193	937,464
Billings in excess of costs and estimated earnings	325,290	288,311
Accrued expenses and other current liabilities	171,150	159,016
Total current liabilities	1,584,889	1,473,708
LONG-TERM DEBT, less current maturities (net of unamortized discount and debt issuance cost of $63,297 and $6,697)	680,265	728,767
DEFERRED INCOME TAXES	296,728	273,310
OTHER LONG-TERM LIABILITIES	140,870	140,665
Total liabilities	2,702,752	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	49,170	49,073
Additional paid-in capital	1,070,191	1,035,516
Retained earnings	414,563	377,803
Accumulated other comprehensive loss	(41,091)	(42,165)
TOTAL STOCKHOLERS' EQUITY	1,492,833	1,420,227
TOTAL LIABILITIES AND STOCKHOLERS' EQUITY	$ 4,195,585	$ 4,036,677