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DEBT - Long- Term Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Capital lease obligations $ 18 $ 23
Total debt 38,518 92,055
Less current portion (2,010) (2,263)
Long-term Debt and Capital Lease Obligations 36,508 89,792
Unamortized Discount and Debt Issuance Costs (339) (5,032)
Senior Debt [Member] | Term Loan [Member]    
Debt Instrument [Line Items]    
Debt 38,500 39,500
Unamortized Discount and Debt Issuance Costs $ (339) (363)
Interest Rate 2.78%  
Convertible Notes [Member]    
Debt Instrument [Line Items]    
Interest Rate 8.00%  
Convertible Notes [Member] | 8% Convertible Notes [Member]    
Debt Instrument [Line Items]    
Debt $ 0 25,000
Unamortized Discount and Debt Issuance Costs $ 0 (4,669)
Interest Rate 8.00%  
Convertible Notes [Member] | Convertible Note Derivative Liability [Member]    
Debt Instrument [Line Items]    
Debt $ 0 27,532
Unamortized Discount and Debt Issuance Costs $ 0 $ 0