CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net income (loss)	$ (283,780)	$ (69,836)	$ 279,370
Other comprehensive loss:
Reclassification adjustments for derivative gains included in net income (loss)		(767)	(1,391)
Other comprehensive loss		(767)	(1,391)
Comprehensive income (loss)	$ (283,780)	$ (70,603)	$ 277,979