Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (294,790)	$ 31,190	$ 14,082
Change in fair value of derivatives, net of income tax (expense) benefit of $2,650, ($3,211) and $309 respectively	(4,473)	6,516	(1,617)
Comprehensive income (loss)	$ (299,263)	$ 37,706	$ 12,465