DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Swaps cancellation expenses	$ 73,278,000	$ 66,522,000	$ 62,525,000
Interest expense	6,992,000	13,060,000	23,691,000
Unrealized loss to be reclassified as a reduction of interest expense	0
Interest Rate Swap
Derivative [Line Items]
Notional amount	5,000,000
Swaps cancellation expenses	466,000
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap
Derivative [Line Items]
Interest expense	607,000	747,000	$ 648,000
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap | FHLB Advances
Derivative [Line Items]
Notional amount	$ 40,000,000	$ 40,000,000