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Long-Term Debt (Details) - Successor - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Total debt $ 37,502 $ 305,308
Less: current maturities of long-term debt 0 0
Long-term debt 37,502 305,308
Revolving Credit Facility | New First Lien Exit Facility    
Debt Instrument [Line Items]    
Total debt 0 0
Convertible Debt | Convertible Notes    
Debt Instrument [Line Items]    
Total debt 0 268,780
Secured Debt | Building Note    
Debt Instrument [Line Items]    
Total debt $ 37,502 $ 36,528