PREMISES AND EQUIPMENT - Statement of financial information (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Statement of Financial Condition
Operating leases right of use asset	$ 6,900,000		$ 6,900,000		$ 7,397,000
Operating leases liability	7,146,000		7,146,000		$ 7,599,000
Statement of Income
Operating lease costs classified as occupancy and equipment expense (includes short-term lease costs and amortization of right of use asset)	446,000	$ 408,000	1,289,000	$ 1,166,000
Supplemental Cash Flow Information
Operating cash flows from operating leases	$ 439,000	400,000	1,234,000	1,141,000
Operating leases		$ 618,000	$ 296,000	$ 618,000