Earnings (Loss) Per Share - Reconciliations of Basic and Diluted Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	2 Months Ended	3 Months Ended	8 Months Ended	9 Months Ended
	Sep. 30, 2017	Aug. 31, 2017	Sep. 30, 2016	Aug. 31, 2017	Sep. 30, 2016
Numerator:
(Loss) income from continuing operations	$ (821)
Income from discontinued operations, net of income taxes	0
Net (loss) income	$ (821)
Denominator:
Weighted average common shares outstanding	2,000
Effect of dilutive securities:
Outstanding common stock equivalents	0
Denominator for diluted earnings (loss) per common share	2,000
Basic earnings (loss) per common share:
Continuing operations (in dollars per share)	$ (0.41)
Discontinued operations (in dollars per share)	0.00
Net basic (loss) earnings per common share	(0.41)
Diluted earnings (loss) per common share:
Continuing operations (in dollars per share)	(0.41)
Discontinued operations (in dollars per share)	0.00
Net diluted (loss) earnings per common share	$ (0.41)
Excluded outstanding share-based awards and securities having an anti-dilutive effect	1,734
5.25% Convertible Notes due December 30, 2019 | Convertible Debt Securities
Diluted earnings (loss) per common share:
Excluded outstanding share-based awards and securities having an anti-dilutive effect	0
Second Lien Notes | Convertible Debt Securities
Diluted earnings (loss) per common share:
Excluded outstanding share-based awards and securities having an anti-dilutive effect	0
Predecessor
Numerator:
(Loss) income from continuing operations		$ 72,223	$ (18,298)	$ 36,190	$ (84,372)
Income from discontinued operations, net of income taxes		0	(1,688)	0	6,246
Net (loss) income		$ 72,223	$ (19,986)	$ 36,190	$ (78,126)
Denominator:
Weighted average common shares outstanding		31,790	32,260	32,174	27,909
Effect of dilutive securities:
Outstanding common stock equivalents		0	0	0	0
Denominator for diluted earnings (loss) per common share		31,790	32,260	32,174	27,909
Basic earnings (loss) per common share:
Continuing operations (in dollars per share)		$ 2.27	$ (0.57)	$ 1.12	$ (3.02)
Discontinued operations (in dollars per share)		0.00	(0.05)	0.00	0.22
Net basic (loss) earnings per common share		2.27	(0.62)	1.12	(2.80)
Diluted earnings (loss) per common share:
Continuing operations (in dollars per share)		2.27	(0.57)	1.12	(3.02)
Discontinued operations (in dollars per share)		0.00	(0.05)	0.00	0.22
Net diluted (loss) earnings per common share		$ 2.27	$ (0.62)	$ 1.12	$ (2.80)
Excluded outstanding share-based awards and securities having an anti-dilutive effect		0	2,326	0	2,326
Predecessor | 5.25% Convertible Notes due December 30, 2019 | Convertible Debt Securities
Diluted earnings (loss) per common share:
Excluded outstanding share-based awards and securities having an anti-dilutive effect		0	0	0	0
Predecessor | Second Lien Notes | Convertible Debt Securities
Diluted earnings (loss) per common share:
Excluded outstanding share-based awards and securities having an anti-dilutive effect		0	0	0	0