Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Statement of Comprehensive Income [Abstract]
Net loss	$ (3,633)	$ (37,643)
Change in fair value of derivative instruments, accounted for as hedges, net of income tax benefit of $0, and $86, respectively	3,188	(145)
Comprehensive loss	$ (445)	$ (37,788)