Condensed Consolidated Statement of Stockholders' Equity/(Deficit) (Unaudited) - 6 months ended Jun. 30, 2016 - USD ($) $ in Thousands	Total	Common Stock	Additional paid-in capital	Retained deficit	Accumulated other comprehensive income
Beginning Balance, Shares at Dec. 31, 2015	26,921,066	26,921,000
Beginning Balance at Dec. 31, 2015	$ (1,489)	$ 269	$ 521,842	$ (707,592)	$ 183,992
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income/(loss)	47,883			47,883
Stock-based compensation issued, net, Shares		130,000
Stock-based compensation issued, net	(380)	$ 2	(382)
Stock-based compensation expense	3,917		3,917
Interest rate swaps other comprehensive income before reclassifications	(329)				(329)
Interest rate swaps reclassified from accumulated other comprehensive income	727				727
Employee benefits reclassified from accumulated other comprehensive income	$ (74,015)				(74,015)
Ending Balance, Shares at Jun. 30, 2016	27,050,600	27,051,000
Ending Balance at Jun. 30, 2016	$ (23,686)	$ 271	$ 525,377	$ (659,709)	$ 110,375