ACQUISITIONS - Acquisition expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Total mergers and acquisitions expense	$ 1,223	$ 4,101
Salaries and employee benefits
Business Acquisition [Line Items]
Total mergers and acquisitions expense	591	547
Professional services
Business Acquisition [Line Items]
Total mergers and acquisitions expense	563	1,118
Technology and information systems
Business Acquisition [Line Items]
Total mergers and acquisitions expense	7	0
Data processing
Business Acquisition [Line Items]
Total mergers and acquisitions expense	(73)	2,428
Marketing
Business Acquisition [Line Items]
Total mergers and acquisitions expense	81	0
Other
Business Acquisition [Line Items]
Total mergers and acquisitions expense	$ 54	$ 8