INCOME TAXES - Summary of reconciliation between the income tax expense and the amount of income taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Amount
Federal income tax at statutory rate	$ 3,427	$ 3,572
Tax-exempt income	(749)	(761)
Low-income housing credits	(249)	(405)
Bank owned life insurance income	(125)	(126)
Other	(10)	41
Income tax expense and rate	$ 2,294	$ 2,321
Rate
Federal income tax at statutory rate	21.00%	21.00%
Tax-exempt income	(4.60%)	(4.50%)
Low-income housing credits	(1.50%)	(2.40%)
Bank owned life insurance income	(0.70%)	(0.70%)
Other	(0.10%)	0.20%
Income tax expense and rate	14.10%	13.60%