PREMISES AND EQUIPMENT - Additional information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2019
PREMISES AND EQUIPMENT
Operating leases right of use asset	$ 6,623,000		$ 6,621,000
Operating leases liability	$ 6,841,000		$ 6,870,000
Weighted-average lease term	7 years 7 months 6 days
Operating lease, weighted average discount rate, percent	3.99%
Operating lease, expense	$ 483,000	$ 411,000
Lease expense related to ATMs	81,000	72,000
Income recognized from lessor agreements	$ 341,000	$ 324,000
Minimum
PREMISES AND EQUIPMENT
Lessee expected lease terms	P3Y3M18D
Maximum
PREMISES AND EQUIPMENT
Lessee expected lease terms	P14Y8M12D
ASU 2016-02 | Adjustment
PREMISES AND EQUIPMENT
Operating leases right of use asset				$ 9,500,000