ACQUISITIONS - Acquisition expenses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2022
Business Acquisition [Line Items]
Total mergers and acquisitions expense	$ 347	$ 874
Salaries and employee benefits
Business Acquisition [Line Items]
Total mergers and acquisitions expense	152	381
Professional services
Business Acquisition [Line Items]
Total mergers and acquisitions expense	274	386
Technology and information systems
Business Acquisition [Line Items]
Total mergers and acquisitions expense	4	4
Data processing
Business Acquisition [Line Items]
Total mergers and acquisitions expense	(93)	22
Marketing
Business Acquisition [Line Items]
Total mergers and acquisitions expense	5	75
Other.
Business Acquisition [Line Items]
Total mergers and acquisitions expense	$ 5	$ 6