DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Schedule of Derivative Instruments) (Details) $ in Thousands	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($) swap_agreement
Minimum
Derivative [Line Items]
Interest Rates	2.55%
Maximum
Derivative [Line Items]
Interest Rates	3.67%
Interest rate swaps | Cash Flow Hedging | Derivative liabilities, deferred rental income and other liabilities
Derivative [Line Items]
Outstanding Notional Amount	$ 865,266
Fair Value of Liabilities	$ (7,255)	$ (4,181)
Interest rate swaps | Cash Flow Hedging | Prepaid expenses and other current assets
Derivative [Line Items]
Outstanding Notional Amount		60,000
Fair value of assets		$ 261
Designated as Hedging Instrument | Interest rate swaps | Prepaid expenses and other current assets
Derivative [Line Items]
Derivative, number of instruments held | swap_agreement		2