Quarterly report pursuant to Section 13 or 15(d)

LIABILITIES AND LONG-TERM DEBT LIABILITIES AND LONG-TERM DEBT - Schedule of Carrying Amounts of and Issuance Costs of Debt (Details)

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LIABILITIES AND LONG-TERM DEBT LIABILITIES AND LONG-TERM DEBT - Schedule of Carrying Amounts of and Issuance Costs of Debt (Details) - USD ($)
$ in Thousands
Sep. 30, 2018
Dec. 31, 2017
Line of Credit Facility [Line Items]    
Total debt, gross $ 106,406 $ 99,583
Debt issuance costs (875) (501)
Total long-term debt 105,531 99,082
Less current portion including loan fees 4,194 8,061
Total long-term debt, less current portion including loan fees 101,337 91,021
Revolving Credit Facility [Member]    
Line of Credit Facility [Line Items]    
Total debt, gross 20,000 35,000
Acquisition Term Loan [Member]    
Line of Credit Facility [Line Items]    
Total debt, gross 0 47,250
Term Loan [Member]    
Line of Credit Facility [Line Items]    
Total debt, gross $ 86,406 $ 17,333