LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Non-accrual loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Financing Receivable Nonaccrual Status
Balance	$ 527	$ 488
Transfer into non-accrual	158	190
Loans paid down/payoffs	(13)	(202)
Loans charged off	(301)	(8)
Balance	371	468
Real Estate Loan
Financing Receivable Nonaccrual Status
Balance	145
Balance	280
Real Estate Loan | Single-family Residential
Financing Receivable Nonaccrual Status
Balance	145	104
Transfer into non-accrual		187
Loans paid down/payoffs	(6)	(191)
Balance	139	100
Real Estate Loan | Commercial
Financing Receivable Nonaccrual Status
Transfer into non-accrual	141
Balance	141
Commercial and Industrial
Financing Receivable Nonaccrual Status
Balance	299
Commercial and Industrial | Commercial and Industrial
Financing Receivable Nonaccrual Status
Balance	299	299
Loans charged off	(299)	(3)
Balance		296
Consumer Loans
Financing Receivable Nonaccrual Status
Balance	83
Balance	91
Consumer Loans | Automobile
Financing Receivable Nonaccrual Status
Balance	83	85
Transfer into non-accrual	17	3
Loans paid down/payoffs	(7)	(11)
Loans charged off	(2)	(5)
Balance	$ 91	$ 72