LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Loans - Non-accrual loans (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable Nonaccrual Status
Balance	$ 488	$ 338
Transfer into non-accrual	452	193
Loans paid down/payoffs	(286)	(191)
Loans returned to accrual status	(16)	(29)
Loans charged off	(57)	(128)
Balance	581	183
Real Estate Loan
Financing Receivable Nonaccrual Status
Balance	104
Balance	149
Commercial and Industrial
Financing Receivable Nonaccrual Status
Balance	299
Balance	299
Consumer Loans
Financing Receivable Nonaccrual Status
Balance	85
Balance	133
Single-family Residential | Real Estate Loan
Financing Receivable Nonaccrual Status
Balance	104	123
Transfer into non-accrual	307	31
Loans paid down/payoffs	(262)	(46)
Balance	149	108
Commercial and Industrial | Commercial and Industrial
Financing Receivable Nonaccrual Status
Balance	299
Balance	299
SBA Guaranty | Commercial and Industrial
Financing Receivable Nonaccrual Status
Balance		71
Loans paid down/payoffs		(61)
Loans charged off		(10)
Consumer
Financing Receivable Nonaccrual Status
Transfer into non-accrual		11
Loans paid down/payoffs		(11)
Automobile | Consumer Loans
Financing Receivable Nonaccrual Status
Balance	85	144
Transfer into non-accrual	145	151
Loans paid down/payoffs	(24)	(73)
Loans returned to accrual status	(16)	(29)
Loans charged off	(57)	(118)
Balance	$ 133	$ 75