Consolidated Statements of Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Common Stock [Member]	Paid-in Capital [Member]	Treasury Stock, at Cost [Member]	Retained Earnings (Accumulated Deficit) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Beginning Balance (Predecessor [Member]) at Dec. 31, 2013	$ 2,253,249	$ 2,141	$ 3,038,613	$ (53,848)	$ (771,349)	$ 37,692
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income (loss) | Predecessor [Member]	(592,804)				(558,353)	(34,451)
Employee stock-based compensation expense | Predecessor [Member]	9,847		9,847
Dividends on common shares ($0.01 per share) | Predecessor [Member]	(2,123)				(2,123)
Treasury shares purchased | Predecessor [Member]	(15)			(15)
Ending Balance (Predecessor [Member]) at Dec. 31, 2014	1,668,154	2,141	3,048,460	(53,863)	(1,331,825)	3,241
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income (loss) | Predecessor [Member]	(2,918,198)				(2,913,142)	(5,056)
Issuance of 64 shares of common stock under the stock incentive plan-restricted stock and restricted stock units, net of forfeitures | Predecessor [Member]	(5)	4	(9)
Employee stock-based compensation expense | Predecessor [Member]	5,760		5,760
Ending Balance (Predecessor [Member]) at Dec. 31, 2015	(1,244,289)	2,145	3,054,211	(53,863)	(4,244,967)	(1,815)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Total comprehensive income (loss) | Predecessor [Member]	1,242,190				1,242,081	109
Employee stock-based compensation expense | Predecessor [Member]	2,099		2,099
Elimination of predecessor equity | Predecessor [Member]	0	(2,145)	(3,056,310)	53,863	3,002,886	1,706
Ending Balance (Predecessor [Member]) at Oct. 01, 2016	0	0	0	0	0	0
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of successor equity | Successor [Member]	687,483	250	687,233
Warrants exercised | Successor [Member]	159		159
Total comprehensive income (loss) | Successor [Member]	57,903				33,449	24,454
Employee stock-based compensation expense | Successor [Member]	1,032		1,032
Ending Balance (Successor [Member]) at Dec. 31, 2016	$ 746,577	$ 250	$ 688,424	$ 0	$ 33,449	$ 24,454