DERIVATIVE INSTRUMENTS AND HEDGING ACTIVITIES (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020 USD ($) settled_derivative derivative_instrument	Dec. 31, 2019 USD ($) settled_derivative
Derivative [Line Items]
Derivative liability fair value gross	$ 77,363	$ 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	$ 900
Credit Risk Contract
Derivative [Line Items]
Derivative liability fair value gross	$ 79,900	$ 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	3
Loss on derivative expected amount to be reclassified	$ 19,600
Settled Interest Rate Swap, One | Designated as Hedging Instrument | Interest rate derivatives
Derivative [Line Items]
Derivative change in fair value recognition period	7 years 9 months 18 days
Settled Interest Rate Swap, Two | Designated as Hedging Instrument | Interest rate derivatives
Derivative [Line Items]
Derivative change in fair value recognition period	1 year 6 months
Settled Interest Rate Swap, Three | Designated as Hedging Instrument | Interest rate derivatives
Derivative [Line Items]
Derivative change in fair value recognition period	1 month 6 days