DERIVATIVE FINANCIAL INSTRUMENTS - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Derivative [Line Items]
Interest expense	$ 2,677,000	$ 5,770,000	$ 10,759,000	$ 18,337,000
Unrealized loss to be reclassified as a reduction of interest expense			0
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap
Derivative [Line Items]
Notional amount	5,000,000		5,000,000		$ 5,000,000
Interest expense			509,000	$ 495,000
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap | FHLB Advances
Derivative [Line Items]
Notional amount	$ 40,000,000		$ 40,000,000