Condensed Consolidated Statement of Changes in Stockholders' Equity - 9 months ended Sep. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	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	$ 34,596		34,596
Unrealized gain (loss) on derivatives, net of tax	(12,232)				(12,232)
Vesting of restricted shares		$ 16	(16)
Vesting of restricted shares, shares		1,612,063
Shares withheld for tax withholdings	(1,604)		(1,604)
Shares withheld for tax withholdings, shares		(87,360)
Exercise of stock options	$ 82		82
Exercise of stock options, shares	4,331	4,331
Accumulated cash dividends related to performance shares which vested during the period	$ (3,400)		(3,400)
Cash dividends declared to stockholders, net of forfeitures	(62,393)		(35,974)	(26,419)
Net loss	(626)			(626)
Ending Balance at Sep. 30, 2016	$ 458,543	$ 919	$ 618,449	$ 19,415	$ (25,369)	$ (154,871)
Ending Balance, shares at Sep. 30, 2016	91,849,408	91,849,408