LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Non-accrual loans (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Financing Receivable Nonaccrual Status
Balance	$ 527	$ 488
Transfer into nonaccrual	158	310
Loans paid down/payoffs	(66)	(214)
Loans returned to accrual status	(1)
Loans charged off	(301)	(8)
Balance	317	576
Real Estate Loan
Financing Receivable Nonaccrual Status
Balance	145
Balance	238
Real Estate Loan | Single-family Residential
Financing Receivable Nonaccrual Status
Balance	145	104
Transfer into nonaccrual		307
Loans paid down/payoffs	(39)	(195)
Balance	106	216
Real Estate Loan | Commercial
Financing Receivable Nonaccrual Status
Transfer into nonaccrual	140
Loans paid down/payoffs	(8)
Balance	132
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	79
Consumer Loans | Automobile
Financing Receivable Nonaccrual Status
Balance	83	85
Transfer into nonaccrual	18	3
Loans paid down/payoffs	(19)	(19)
Loans returned to accrual status	(1)
Loans charged off	(2)	(5)
Balance	$ 79	$ 64