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LONG TERM DEBT AND CAPITAL LEASES - Schedule of Cash Flow Hedges Related to Derivative Instruments on the Balance Sheet (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Cash flow hedge derivatives, assets	$ 820	$ 401
Cash flow hedge derivatives, liabilities	1,942	123
Accumulated other comprehensive (loss) income, net - interest rate swaps	(1,476)	267	$ 0
Other current assets | Designated as hedging instrument | Interest rate swaps
Debt Instrument [Line Items]
Cash flow hedge derivatives, assets	338	0
Other non-current assets | Designated as hedging instrument | Interest rate swaps
Debt Instrument [Line Items]
Cash flow hedge derivatives, assets	482	401
Other accrued liabilities | Designated as hedging instrument | Interest rate swaps
Debt Instrument [Line Items]
Cash flow hedge derivatives, liabilities	387	123
Other long-term liabilities | Designated as hedging instrument | Interest rate swaps
Debt Instrument [Line Items]
Cash flow hedge derivatives, liabilities	1,555	0
Accumulated other comprehensive (loss) income, net | Designated as hedging instrument | Interest rate swaps
Debt Instrument [Line Items]
Accumulated other comprehensive (loss) income, net - interest rate swaps	(1,196)	278
Accumulated other comprehensive (loss) income, net - interest rate swaps - tax provision	(112)	(112)
Accumulated other comprehensive (loss) income, net	$ (1,308)	$ 166

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