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, 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	163,591	214,711	(50,954)	0	0	0	0	(166)
Stock-based compensation	393	0	0	0	0	393	0	0
Proceeds from warrant exercises	2	0	0	0	0	2	0	0
Ending balance at Mar. 31, 2015	1,837,721	1,204,001	169,329	0	450	189,533	(56)	274,464
Beginning balance at Dec. 31, 2015	1,958,346	1,478,439	15,215	0	450	190,813	(118)	273,547
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income	52,212	9,415	42,797	0	0	0	0	0
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	0	6,442						(6,442)
Stock-based compensation	1,082	0	0	0	0	1,082	0	0
Stock Issued During Period, Value, Share-based Compensation, Gross	(9)	(115)					106
Proceeds from warrant exercises	0
Ending balance at Mar. 31, 2016	$ 2,011,631	$ 1,494,181	$ 58,012	$ 0	$ 450	$ 191,895	$ (12)	$ 267,105