LOANS RECEIVABLE AND ALLOWANCE FOR CREDIT LOSSES - Troubled debt restructured loans (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Financing Receivable, Impaired [Line Items]
Troubled debt restructured loans	$ 33	$ 34
Non-accrual and 90+ days past due and still accruing loans to average loans	0.26%	0.26%
Allowance for credit losses to non-accrual and 90 days or more and still accruing loans	451.60%	433.90%