CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY - USD ($) $ in Thousands	Common Stock.	Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income / (Loss)	Total
Balance at Dec. 31, 2015	$ 827	$ 1,509,688	$ (163,421)	$ 667	$ 1,347,761
Increase (Decrease) in Shareholders' Equity
Net (loss) / income			61,502		61,502
Issuance of common stock		26			26
Amount recognized in other comprehensive income (loss) on derivative				(8,901)	(8,901)
Amount reclassified from AOCI to net (loss) income on derivative				1,502	1,502
Foreign subsidiaries liquidation				(730)	(730)
Foreign currency translation adjustments				63	63
Stock-based compensation		4,299			4,299
Balance at Sep. 30, 2016	827	1,514,013	(101,919)	(7,399)	1,405,522
Balance at Dec. 31, 2016	830	1,515,362	(96,115)	17,334	1,437,411
Increase (Decrease) in Shareholders' Equity
Net (loss) / income			(123,149)		(123,149)
Amount recognized in other comprehensive income (loss) on derivative				(6,359)	(6,359)
Amount reclassified from AOCI to net (loss) income on derivative				1,228	1,228
Stock-based compensation		3,607			3,607
Balance at Sep. 30, 2017	$ 830	$ 1,518,969	$ (219,264)	$ 12,203	$ 1,312,738