CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash, cash equivalents	$ 15,302	$ 1,696
Accounts receivable, retainage	569,391	484,255
CURRENT LIABILITIES:
Accounts payable, retainage (in dollars)	258,294	204,767
Unamortized discount and debt issuance cost	$ 56,072	$ 6,697
STOCKHOLDERS' EQUITY:
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares issued	0	0
Common stock, shares authorized	75,000,000	75,000,000
Common stock, par value	$ 1	$ 1
Common stock, shares issued	49,211,353	49,072,710
Common stock, shares outstanding	49,211,353	49,072,710