Condensed Consolidated Statements of Changes in Stockholders' Equity - 3 months ended Mar. 31, 2016 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	(Accumulated Deficit) Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Treasury Stock, at Cost [Member]
Beginning Balance at Dec. 31, 2015	$ 504,120	$ 903	$ 624,765	$ 46,460	$ (13,137)	$ (154,871)
Beginning Balance, shares at Dec. 31, 2015	90,320,374	90,320,374
Equity-based compensation	$ 29,590		29,590
Unrealized gain (loss) on derivatives, net of tax	(9,250)				(9,250)
Vesting of restricted shares		$ 1	(1)
Vesting of restricted shares, shares		72,343
Shares withheld for tax withholdings	(334)		(334)
Shares withheld for tax withholdings, shares		(18,701)
Exercise of stock options	$ 26		26
Exercise of stock options, shares	1,361	1,361
Cash dividends declared to stockholders, net of forfeitures	$ (39,051)		(21,271)	(17,780)
Net loss	(84,049)			(84,049)
Ending Balance at Mar. 31, 2016	$ 401,052	$ 904	$ 632,775	$ (55,369)	$ (22,387)	$ (154,871)
Ending Balance, shares at Mar. 31, 2016	90,375,377	90,375,377