Consolidated Statements of Stockholders' Equity - Successor [Member] - USD ($) $ in Thousands	Total	Retained Earnings/Accumulated Deficit [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Common Stock Held in Treasury, at Cost [Member]	Noncontrolling Interest [Member]
Beginning balance at Dec. 31, 2013	$ 978,422	$ 505,219	$ 11,661	$ 0	$ 450	$ 185,672	$ (19)	$ 275,439
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	242,721	(51,963)	294,667	0	0	0	0	17
Stock-based compensation	2,387	0	0	0	0	2,387	0	0
Proceeds from warrant exercise	1	0	0	0	0	1	0	0
Ending balance at Jun. 30, 2014	1,223,531	453,256	306,328	0	450	188,060	(19)	275,456
Beginning balance at Dec. 31, 2014	1,673,735	989,290	220,283	0	450	189,138	(56)	274,630
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	372,200	497,406	(124,921)	0	0	0	0	(285)
Stock-based compensation	1,274	0	0	0	0	1,274	0	0
Proceeds from warrant exercise	2	0	0	0	0	2	0	0
Ending balance at Jun. 30, 2015	$ 2,047,211	$ 1,486,696	$ 95,362	$ 0	$ 450	$ 190,414	$ (56)	$ 274,345