Loss Per Share - Reconciliations of Basic and Diluted Earnings (Loss) Per Common Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Numerator:
Net loss		$ (5,141)
Denominator:
Weighted average common shares outstanding (in shares)		2,000
Effect of dilutive securities:
Outstanding common stock equivalents (in shares)		0
Denominator for diluted loss per common share (in shares)		2,000
Basic and diluted earnings (loss) per common share:
Basic loss per common share		$ (2.57)
Diluted loss per common share		$ (2.57)
Excluded outstanding share-based awards and securities having an anti-dilutive effect (in shares)		1,734
Predecessor
Numerator:
Net loss	[1]		$ (13,492)
Denominator:
Weighted average common shares outstanding (in shares)			32,303
Effect of dilutive securities:
Outstanding common stock equivalents (in shares)			0
Denominator for diluted loss per common share (in shares)			32,303
Basic and diluted earnings (loss) per common share:
Basic loss per common share			$ (0.42)
Diluted loss per common share			$ (0.42)
Excluded outstanding share-based awards and securities having an anti-dilutive effect (in shares)			2,468

[1] * Adjusted due to the adoption of ASU No. 2017-07, "Compensation – Retirement Benefits (Topic 715): Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost." See Note 3 - New Accounting Standards, for additional information.