Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements - Schedule of Fair Value of Long-Term Debt (Details)

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Fair Value Measurements - Schedule of Fair Value of Long-Term Debt (Details) - Fair Value, Inputs, Level 2 - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
11.00% 1.5 Lien Term Loan, Due November 2019    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Long-term debt, term loan fair value $ 75,000 $ 75,000
9.00 % Second Lien Term Loan, Due May 2020    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Long-term debt, term loan fair value 297,000 288,000
9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Long-term debt, notes fair value 164,898 162,322
8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Long-term debt, notes fair value 127,149 119,490
8.50% Unsecured Senior Notes, Due June 2019    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Long-term debt, notes fair value $ 182,236 $ 178,439