ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY - Amortized Cost Basis of Each Class of Financing Receivables (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	$ 4,428
Percentage of loans receivable	0.09%
Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	$ 1,912
Combination Interest Rate Reduction and Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	944
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	1,572
Commercial and Industrial Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	$ 4,428
Percentage of loans receivable	0.31%
Commercial and Industrial Loans | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	$ 1,912
Commercial and Industrial Loans | Combination Interest Rate Reduction and Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	944
Commercial and Industrial Loans | Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	1,572
Commercial and Industrial Loans | Working capital lines of credit loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	$ 2,856
Percentage of loans receivable	0.47%
Commercial and Industrial Loans | Working capital lines of credit loans | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	$ 1,912
Commercial and Industrial Loans | Working capital lines of credit loans | Combination Interest Rate Reduction and Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	944
Commercial and Industrial Loans | Working capital lines of credit loans | Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	0
Commercial and Industrial Loans | Non-working capital loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	$ 1,572
Percentage of loans receivable	0.19%
Commercial and Industrial Loans | Non-working capital loans | Interest Rate Reduction
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	$ 0
Commercial and Industrial Loans | Non-working capital loans | Combination Interest Rate Reduction and Term Extension
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	0
Commercial and Industrial Loans | Non-working capital loans | Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay
Financing Receivable, Allowance for Credit Loss [Line Items]
Combination Principal Forgiveness, Interest Rate Reduction, Term Extension and Payment Delay	$ 1,572