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Long-Term Debt - Schedule of Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Credit Facility $ 142,080 $ 43,500
Second Lien Notes   11,367
8.750% Senior Notes 151,848 151,848
Less unamortized discount on 8.750% Senior Notes (949) (1,708)
Other 759 282
Total long-term debt 301,155 204,122
8.750% Senior Notes Due April 15, 2019    
Debt Instrument [Line Items]    
Less deferred financing costs (474) (851)
Second Lien Notes    
Debt Instrument [Line Items]    
Less deferred financing costs   $ (316)
Mortgages Debt    
Debt Instrument [Line Items]    
Mortgage debt $ 7,891