Annual report pursuant to Section 13 and 15(d)

LONG-TERM DEBT AND LONG-TERM OBLIGATIONS - Components of Long-term Debt (Details)

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LONG-TERM DEBT AND LONG-TERM OBLIGATIONS - Components of Long-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Jul. 30, 2018
Debt Instrument [Line Items]      
Long-term debt, gross $ 83,938    
Loan fees 649 $ 830  
Total debt 83,289 102,482  
Less current portion 4,194 4,194  
Total long-term debt, less current portion 79,095 98,288  
ARC Agreement, Fourth Amendment      
Debt Instrument [Line Items]      
Loan fees   900  
ARC Agreement      
Debt Instrument [Line Items]      
Loan fees   300  
Term Loan | ARC Agreement, Fourth Amendment      
Debt Instrument [Line Items]      
Long-term debt, gross 80,938 85,312  
Total debt 80,900    
Term Loan | ARC Agreement      
Debt Instrument [Line Items]      
Total debt     $ 60,400
Revolving Credit Facility | ARC Agreement, Fourth Amendment      
Debt Instrument [Line Items]      
Long-term debt, gross $ 3,000 $ 18,000