ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Troubled Loans Disaggregated by Portfolio Segment (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2023 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 51,129
% of Total Loan Category	0.41%
Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 35,191
More-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	871
Combination- Term Extension and Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	14,570
Combination- Term Extension and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	302
Combination - Payment Delay and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	195
Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 31,694
% of Total Loan Category	0.99%
Commercial | Commercial and industrial | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 21,530
Commercial | Commercial and industrial | More-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Commercial and industrial | Combination- Term Extension and Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	10,164
Commercial | Commercial and industrial | Combination- Term Extension and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Commercial and industrial | Combination - Payment Delay and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Owner-occupied commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 1,206
% of Total Loan Category	0.06%
Commercial | Owner-occupied commercial | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 0
Commercial | Owner-occupied commercial | More-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Owner-occupied commercial | Combination- Term Extension and Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1,062
Commercial | Owner-occupied commercial | Combination- Term Extension and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	144
Commercial | Owner-occupied commercial | Combination - Payment Delay and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Commercial mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 9,468
% of Total Loan Category	0.27%
Commercial | Commercial mortgages | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 9,468
Commercial | Commercial mortgages | More-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Commercial mortgages | Combination- Term Extension and Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Commercial mortgages | Combination- Term Extension and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Commercial mortgages | Combination - Payment Delay and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Construction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 3,305
% of Total Loan Category	0.35%
Commercial | Construction | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 3,305
Commercial | Construction | More-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Construction | Combination- Term Extension and Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Construction | Combination- Term Extension and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Construction | Combination - Payment Delay and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 5,456
% of Total Loan Category	0.29%
Consumer | Term Extension
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 888
Consumer | More-Than-Insignificant Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	871
Consumer | Combination- Term Extension and Payment Delay
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	3,344
Consumer | Combination- Term Extension and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	158
Consumer | Combination - Payment Delay and Interest Rate Reduction
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 195