REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue	$ 29,364	$ 28,391
Products and services transferred at a point in time
Disaggregation of Revenue [Line Items]
Revenue	15,552	14,250
Products and services transferred over time
Disaggregation of Revenue [Line Items]
Revenue	13,812	14,141
Trust management fees
Disaggregation of Revenue [Line Items]
Revenue	13,022	13,495
Financial services fees
Disaggregation of Revenue [Line Items]
Revenue	1,551	1,684
Interchange fees
Disaggregation of Revenue [Line Items]
Revenue	7,736	7,368
Customer deposit fees
Disaggregation of Revenue [Line Items]
Revenue	5,935	4,905
Other customer service fees
Disaggregation of Revenue [Line Items]
Revenue	$ 1,120	$ 939