DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Narrative) (Details) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Jun. 30, 2020 USD ($) derivative_instrument	Jun. 30, 2020 USD ($) derivative_instrument settled_derivative	Dec. 31, 2019 USD ($) settled_derivative
Derivative [Line Items]
Derivative liability fair value gross	$ 77,737	$ 77,737	$ 40,135
Interest Rate Cap
Derivative [Line Items]
Interest rate swap agreements settled | settled_derivative		0	1
Interest rate derivatives
Derivative [Line Items]
Reduction in interest expense	800	$ 1,700
Credit Risk Contract
Derivative [Line Items]
Derivative liability fair value gross	$ 81,000	$ 81,000	$ 41,600
Designated as Hedging Instrument | Interest Rate Cap
Derivative [Line Items]
Notional amount			230,000
Payment received from derivative settlement			$ 200
Designated as Hedging Instrument | Interest rate derivatives
Derivative [Line Items]
Derivatives deferred effective portion of fair value change | derivative_instrument	2	2
Loss on derivative expected amount to be reclassified	$ 15,500	$ 15,500
Settled Interest Rate Swap, One | Designated as Hedging Instrument | Interest rate derivatives
Derivative [Line Items]
Derivative change in fair value recognition period		7 years 6 months
Settled Interest Rate Swap, Two | Designated as Hedging Instrument | Interest rate derivatives
Derivative [Line Items]
Derivative change in fair value recognition period		1 year 2 months 12 days