Income Taxes - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017		Jun. 30, 2018	Jun. 30, 2017
Income Tax Contingency [Line Items]
Income tax expense (benefit)	$ (1,437)			$ (1,958)
Pre-tax loss from continuing operations	$ (9,950)			$ (15,612)
Effective tax rate (as a percent)	14.40%			12.50%
Predecessor
Income Tax Contingency [Line Items]
Income tax expense (benefit)		$ 71	[1]		$ 8
Pre-tax loss from continuing operations		$ (22,470)	[1]		$ (36,025)
Effective tax rate (as a percent)		(0.30%)			(0.02%)

[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.