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FAIR VALUE ACCOUNTING - Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Financial assets:
Securities available for sale "AFS"	$ 165,991	$ 203,068
Securities held to maturity "HTM"	76,779	69,177
Equity investments	1,794	1,328
Carrying Amount | (Level I)
Financial assets:
Cash and cash equivalents	35,363	47,691
Equity investments	338	368
Loans held for sale - Residential mortgage	0	1,224
Accrued interest receivable	5,285	3,916
Financial liabilities:
Other borrowings	72,409	58,426
Accrued interest payable	968	586
Carrying Amount | (Level II)
Financial assets:
Other interest bearing deposits	249	1,511
Securities available for sale "AFS"	165,991	203,068
Securities held to maturity "HTM"	96,379	71,141
Other investments	15,834	15,305
Financial liabilities:
FHLB advances	142,530	111,527
Carrying Amount | (Level II) | SBA PPP loans
Financial assets:
Loans held for sale - Residential mortgage	0	5,446
Carrying Amount | (Level III)
Financial assets:
Loans receivable, net	1,393,845	1,294,050
Mortgage servicing rights	4,262	4,161
Financial liabilities:
Deposits	1,424,720	1,387,535
Carrying Amount | NAV
Financial assets:
Equity investments	1,456	960
Estimated Fair Value | (Level I)
Financial assets:
Cash and cash equivalents	35,363	47,691
Equity investments	338	368
Loans held for sale - Residential mortgage	0	1,250
Accrued interest receivable	5,285	3,916
Financial liabilities:
Other borrowings	72,409	58,426
Accrued interest payable	968	586
Estimated Fair Value | (Level II)
Financial assets:
Other interest bearing deposits	250	1,535
Securities available for sale "AFS"	165,991	203,068
Securities held to maturity "HTM"	76,779	69,177
Other investments	15,834	15,305
Financial liabilities:
FHLB advances	141,060	113,285
Estimated Fair Value | (Level II) | SBA PPP loans
Financial assets:
Loans held for sale - Residential mortgage	0	5,776
Estimated Fair Value | (Level III)
Financial assets:
Loans receivable, net	1,342,838	1,319,293
Mortgage servicing rights	5,665	4,312
Financial liabilities:
Deposits	1,420,871	1,388,390
Estimated Fair Value | NAV
Financial assets:
Equity investments	$ 1,456	$ 960

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