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DEBT - Schedule of Debt (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Lines of credit    
Outstanding borrowings $ 13,313 $ 14,875
Less: debt issuance costs (593) (603)
Total debt 12,720 14,272
Less: current portion of long-term debt (3,125) (3,125)
Long-term debt 9,595 11,147
Capital expenditure facility    
Lines of credit    
Outstanding borrowings 13,313 14,875
Credit Facility | U.S. Dollar revolving loan    
Lines of credit    
Outstanding borrowings $ 0 $ 0