LOANS AND ALLOWANCE FOR LOAN LOSSES - Impaired loans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Recorded Investment
Total	$ 11,207,000	$ 13,673,000
Unpaid Principal Balance
Total	14,174,000	16,637,000
Related Allowance
Total	0	0
Average Recorded Investment
Total	12,574,000	14,928,000
Interest Income Recognized
Total	309,000	357,000
Commercial and industrial
Recorded Investment
With no related allowance recorded	973,000	1,017,000
With an allowance recorded	0	0
Total	973,000	1,017,000
Unpaid Principal Balance
With no related allowance recorded	973,000	1,017,000
With an allowance recorded	0	0
Total	973,000	1,017,000
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	0	0
Total	0	0
Average Recorded Investment
With no related allowance recorded	992,000	1,052,000
With an allowance recorded	0	0
Total	992,000	1,052,000
Interest Income Recognized
With no related allowance recorded	14,000	9,000
With an allowance recorded	0	0
Total	14,000	9,000
commercial real estate
Recorded Investment
With no related allowance recorded	9,495,000	11,803,000
With an allowance recorded	0	0
Total	9,495,000	11,803,000
Unpaid Principal Balance
With no related allowance recorded	12,430,000	14,735,000
With an allowance recorded	0	0
Total	12,430,000	14,735,000
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	0	0
Total	0	0
Average Recorded Investment
With no related allowance recorded	10,741,000	12,571,000
With an allowance recorded	0	198,000
Total	10,741,000	12,769,000
Interest Income Recognized
With no related allowance recorded	294,000	346,000
With an allowance recorded	0	0
Total	294,000	346,000
residential real estate
Recorded Investment
With no related allowance recorded	739,000	853,000
With an allowance recorded	0	0
Total	739,000	853,000
Unpaid Principal Balance
With no related allowance recorded	771,000	885,000
With an allowance recorded	0	0
Total	771,000	885,000
Related Allowance
With no related allowance recorded	0	0
With an allowance recorded	0	0
Total	0	0
Average Recorded Investment
With no related allowance recorded	841,000	1,107,000
With an allowance recorded	0	0
Total	841,000	1,107,000
Interest Income Recognized
With no related allowance recorded	1,000	2,000
With an allowance recorded	0	0
Total	$ 1,000	$ 2,000