Quarterly report pursuant to Section 13 or 15(d)

LONG-TERM DEBT AND CAPITAL LEASE - Long-Term Debt (Details)

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LONG-TERM DEBT AND CAPITAL LEASE - Long-Term Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Feb. 02, 2018
Dec. 31, 2017
Debt Instrument [Line Items]      
Outstanding principal $ 99,750   $ 96,063
Discounts and unamortized debt issuance costs and Debt Issuance Costs (4,284)   (1,497)
Long-term debt, net 95,466   94,566
Current portion of long-term debt (1,000)   (1,000)
Long-term debt, net of current portion 94,466   93,566
Line of Credit | First Lien Credit Facility | Term Loan      
Debt Instrument [Line Items]      
Outstanding principal 0 $ 41,000 41,063
Line of Credit | First Lien Credit Facility | Revolving Loan      
Debt Instrument [Line Items]      
Outstanding principal 0   0
Line of Credit | Second Lien Credit Facility | Term Loan      
Debt Instrument [Line Items]      
Outstanding principal 0 $ 55,000 55,000
Senior Secured Notes Due 2024 | Senior Notes      
Debt Instrument [Line Items]      
Outstanding principal $ 99,750   $ 0