Consolidated Statements of Stockholders' Equity (Successor [Member], USD $) In Thousands, unless otherwise specified	Successor [Member] USD ($)	Successor [Member] Retained Earnings/Accumulated Deficit [Member] USD ($)	Successor [Member] Accumulated Other Comprehensive Income (Loss) [Member] USD ($)	Successor [Member] Preferred Stock [Member] USD ($)	Successor [Member] Common Stock [Member] USD ($)	Successor [Member] Additional Paid-in Capital [Member] USD ($)	Successor [Member] Common Stock Held in Treasury, at Cost [Member] USD ($)	Successor [Member] Noncontrolling Interest [Member] USD ($)
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	248,851	155,942	92,756	0	0	0	0	153
Stock-based compensation	1,537	0	0	0	0	1,537	0	0
Proceeds from warrant exercise	1	0	0	0	0	1	0	0
Ending balance at Mar. 31, 2014	1,228,811	661,161	104,417	0	450	187,210	(19)	275,592
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 exercise	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