DERIVATIVE FINANCIAL INSTRUMENTS - (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Asset pledged
Derivative Financial Instruments
Available-for-sale securities pledged as collateral	$ 2,242,000		$ 2,242,000
Interest rate swap agreements
Derivative Financial Instruments
Aggregate notional amount	111,364,000		111,364,000		$ 123,094,000
Asset Derivatives, Notional Amount	55,682,000		55,682,000		61,547,000
Asset Derivatives, Fair Value	3,795,000		3,795,000		3,104,000
Liability Derivatives, Notional Amount	55,682,000		55,682,000		61,547,000
Liability Derivatives, Fair Value	3,795,000		3,795,000		$ 3,104,000
Derivatives not designated as hedging instruments | Interest rate swap agreements
Derivative Financial Instruments
Interest rate swap	0	$ 0	0	$ 0
Increase (decrease) in interest income	$ (4,000)	$ (335,000)	$ (541,000)	$ (1,013,000)