FAIR VALUE ACCOUNTING - Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Financial assets:
Available for sale ("AFS") securities, at amortized cost of $179,744, net of allowance for credit losses of $0 at December 31, 2023	$ 155,743	$ 165,991
Securities held to maturity "HTM"	73,262	76,779
Equity investments	3,284	1,794
Carrying Amount | (Level I)
Financial assets:
Cash and cash equivalents	37,138	35,363
Equity investments	557	338
Accrued interest receivable	5,409	5,285
Financial liabilities:
Other borrowings	67,465	72,409
Accrued interest payable	3,175	968
Carrying Amount | (Level I) | Residential mortgage
Financial assets:
Loans held for sale - Residential mortgage	1,134	0
Carrying Amount | (Level II)
Financial assets:
Other interest bearing deposits	0	249
Available for sale ("AFS") securities, at amortized cost of $179,744, net of allowance for credit losses of $0 at December 31, 2023	155,743	165,991
Securities held to maturity "HTM"	91,229	96,379
Other investments	15,725	15,834
Financial liabilities:
FHLB advances	79,530	142,530
Carrying Amount | (Level II) | Small Business Association Paycheck Protection Program Loans [Member]
Financial assets:
Loans held for sale - Residential mortgage	4,639	0
Carrying Amount | NAV
Financial assets:
Equity investments	2,727	1,456
Carrying Amount | (Level III)
Financial assets:
Loans receivable, net	1,437,884	1,393,845
Mortgage servicing rights	3,865	4,262
Financial liabilities:
Deposits	1,519,092	1,424,720
Estimated Fair Value | (Level I)
Financial assets:
Cash and cash equivalents	37,138	35,363
Equity investments	557	338
Accrued interest receivable	5,409	5,285
Financial liabilities:
Other borrowings	59,743	72,409
Accrued interest payable	3,175	968
Estimated Fair Value | (Level I) | Residential mortgage
Financial assets:
Loans held for sale - Residential mortgage	1,134	0
Estimated Fair Value | (Level II)
Financial assets:
Other interest bearing deposits	0	250
Available for sale ("AFS") securities, at amortized cost of $179,744, net of allowance for credit losses of $0 at December 31, 2023	155,743	165,991
Securities held to maturity "HTM"	73,262	76,779
Other investments	15,725	15,834
Financial liabilities:
FHLB advances	79,087	141,060
Estimated Fair Value | (Level II) | Small Business Association Paycheck Protection Program Loans [Member]
Financial assets:
Loans held for sale - Residential mortgage	4,639	0
Estimated Fair Value | NAV
Financial assets:
Equity investments	2,727	1,456
Estimated Fair Value | (Level III)
Financial assets:
Loans receivable, net	1,374,387	1,342,838
Mortgage servicing rights	5,589	5,665
Financial liabilities:
Deposits	$ 1,517,361	$ 1,420,871