LONG-TERM DEBT - Schedule of Gain (Loss) On Cash Flow Hedges (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Designated as Hedging Instrument \| Interest rate swaps \| Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on cash flow hedges	$ (38)	$ (138)	$ (91)	$ (208)

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_DerivativeInstrumentsGainLossLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration