Annual report pursuant to Section 13 and 15(d)

LONG-TERM DEBT, SUBSEQUENT EVENT AND COMMON STOCK WARRANT LIABILITY - Schedule of Long-term Debt, Related Discounts and Issuance Costs (Details)

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LONG-TERM DEBT, SUBSEQUENT EVENT AND COMMON STOCK WARRANT LIABILITY - Schedule of Long-term Debt, Related Discounts and Issuance Costs (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Outstanding Principal $ 96,063 $ 98,312
Unamortized Discount (305) (469)
Unamortized Debt Issuance Costs (1,192) (1,909)
Long-term Debt, Net 94,566 95,934
Outstanding Principal, Current Portion (1,000) (1,688)
Unamortized Discount, Current Portion 0 0
Unamortized Debt Issuance Costs, Current Portion 0 0
Long-term Debt, Net, Current Portion (1,000) (1,688)
Outstanding Principal, Excluding Current Portion 95,063 96,624
Unamortized Discount, Excluding Current Portion (305) (469)
Unamortized Debt Issuance Costs, Excluding Current Portion (1,192) (1,909)
Long-term Debt, Net, Excluding Current Portion 93,566 94,246
Term Loan | First Lien Credit Agreement | Line of Credit    
Debt Instrument [Line Items]    
Outstanding Principal 41,063 43,312
Unamortized Discount 0 0
Unamortized Debt Issuance Costs (313) (561)
Long-term Debt, Net 40,750 42,751
Term Loan | Second Lien Credit Agreement | Line of Credit    
Debt Instrument [Line Items]    
Outstanding Principal 55,000 55,000
Unamortized Discount (305) (469)
Unamortized Debt Issuance Costs (879) (1,348)
Long-term Debt, Net 53,816 53,183
Revolving Credit Facility | First Lien Credit Agreement | Line of Credit    
Debt Instrument [Line Items]    
Outstanding Principal 0 0
Unamortized Discount 0 0
Unamortized Debt Issuance Costs 0 0
Long-term Debt, Net $ 0 $ 0