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LONG-TERM DEBT - Schedule of Loss On Cash Flow Hedges (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2018
Derivative Instruments, Gain (Loss) [Line Items]        
Other comprehensive loss, reclassification adjustment from AOCI $ (44) $ (38) $ (69) $ (91)
Designated as Hedging Instrument | Interest rate swaps | Interest expense        
Derivative Instruments, Gain (Loss) [Line Items]        
Other comprehensive loss, reclassification adjustment from AOCI $ (44) $ (38) $ (69) $ (91)