CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Net (loss) / income	$ (82,545)	$ 37,995	$ (55,681)	$ 98,853
Other comprehensive income (loss):
Amount recognized in other comprehensive income (loss) on derivative	(4,552)	(13,948)	(4,356)	(13,948)
Amount recognized in net income (loss) on derivative	82		909
Foreign subsidiaries liquidation		(730)		(730)
Foreign currency translation adjustments				63
Comprehensive income (loss)	$ (87,015)	$ 23,317	$ (59,128)	$ 84,238