Quarterly report pursuant to Section 13 or 15(d)

Long-term debt, net - Deferred Financing Costs and Debt Discounts (Details)

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Long-term debt, net - Deferred Financing Costs and Debt Discounts (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Total deferred financing costs and debt discount, net $ 8,053 $ 7,479
Revolving credit facility | Line of Credit    
Debt Instrument [Line Items]    
Debt issuance costs 2,297 1,219
Accumulated amortization of debt issuance costs (231) (541)
Net deferred costs - Revolving credit facility 2,066 678
Second Lien Notes | Senior Notes    
Debt Instrument [Line Items]    
Debt issuance costs 3,868 3,868
Accumulated amortization of debt issuance costs (496) (38)
Net deferred costs - Revolving credit facility 3,372 3,830
Debt discount 3,000 3,000
Accumulated amortization of debt discount (385) (29)
Total deferred financing costs and debt discount, net $ 5,987 $ 6,801