LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Loans - Non-accrual loans (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Financing Receivable Nonaccrual Status
Balance	$ 488	$ 338
Transfer into non-accrual	310	173
Loans paid down/payoffs	(214)	(179)
Loans returned to accrual status		(29)
Loans charged off	(8)	(83)
Balance	576	220
Real Estate Loan
Financing Receivable Nonaccrual Status
Balance	104
Balance	216
Commercial and Industrial
Financing Receivable Nonaccrual Status
Balance	299
Balance	296
Consumer Loans
Financing Receivable Nonaccrual Status
Balance	85
Balance	72
Single-family Residential | Real Estate Loan
Financing Receivable Nonaccrual Status
Balance	104	123
Transfer into non-accrual	307	31
Loans paid down/payoffs	(195)	(44)
Balance	216	110
Commercial and Industrial | Commercial and Industrial
Financing Receivable Nonaccrual Status
Balance	299
Loans charged off	(3)
Balance	296
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	3	131
Loans paid down/payoffs	(19)	(63)
Loans returned to accrual status		(29)
Loans charged off	(5)	(73)
Balance	$ 64	$ 110