CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS’ EQUITY (UNAUDITED) - USD ($) $ in Thousands	Common Stock	Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Total
Balance at Dec. 31, 2016	$ 830	$ 1,515,362	$ (96,115)	$ 17,334	$ 1,437,411
Increase (Decrease) in Shareholders' Equity
Net (loss) / income			26,864		26,864
Amount recognized in other comprehensive income (loss) on derivative				196	196
Amount reclassified from AOCI to net (loss) / income on derivative				827	827
Stock-based compensation		2,077			2,077
Balance at Mar. 31, 2017	830	1,517,439	(69,251)	18,357	1,467,375
Balance at Dec. 31, 2017	833	1,519,564	(264,656)	18,585	1,274,326
Increase (Decrease) in Shareholders' Equity
Net (loss) / income			(35,203)		(35,203)
Amount recognized in other comprehensive income (loss) on derivative				9,802	9,802
Amount reclassified from AOCI to net (loss) / income on derivative				(627)	(627)
Stock-based compensation		345			345
Balance at Mar. 31, 2018	$ 833	$ 1,519,909	$ (299,859)	$ 27,760	$ 1,248,643