INVESTMENT SECURITIES - Schedule of Held-to-maturity, Allowance for Credit Loss (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Allowance for credit losses:
Beginning balance	$ 4
Ending balance	10	$ 4
State and political subdivisions
Allowance for credit losses:
Beginning balance	4	6
Provision for credit losses	6	(2)
Ending balance	$ 10	$ 4