Annual report pursuant to Section 13 and 15(d)

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

v3.10.0.1
Fair Value Measurements - Schedule of Fair Value of Derivatives and Long-Term Debt (Details) - Fair Value, Inputs, Level 2 - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Liabilities:    
Credit Agreement $ 21,000  
Open Contracts    
Assets:    
Derivatives 74,580  
11.00% 1.5 Lien Term Loan, Due November 2019    
Liabilities:    
Long-term debt, term loan fair value   $ 75,000
9.00 % Second Lien Term Loan, Due May 2020    
Liabilities:    
Long-term debt, term loan fair value   288,000
9.75% Senior Second Lien Notes, Due November 2023    
Liabilities:    
Long-term debt, notes fair value $ 546,875  
9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020    
Liabilities:    
Long-term debt, notes fair value   162,322
8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021    
Liabilities:    
Long-term debt, notes fair value   119,490
8.50% Unsecured Senior Notes, Due June 2019    
Liabilities:    
Long-term debt, notes fair value   $ 178,439