ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Performance of Loans (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 18,061
30-89 Days Past Due and Still Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1,041
90+ Days Past Due and Still Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1,041
Accruing Current Balances
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	15,979
Commercial | Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	12,837
Commercial | Commercial and industrial | 30-89 Days Past Due and Still Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Commercial and industrial | 90+ Days Past Due and Still Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Commercial and industrial | Accruing Current Balances
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	12,837
Commercial | Owner-occupied commercial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	148
Commercial | Owner-occupied commercial | 30-89 Days Past Due and Still Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Owner-occupied commercial | 90+ Days Past Due and Still Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Commercial | Owner-occupied commercial | Accruing Current Balances
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	148
Commercial | Commercial mortgages
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	2,057
Commercial | Commercial mortgages | 30-89 Days Past Due and Still Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1,016
Commercial | Commercial mortgages | 90+ Days Past Due and Still Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	1,041
Commercial | Commercial mortgages | Accruing Current Balances
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Consumer
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	3,019
Consumer | 30-89 Days Past Due and Still Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	25
Consumer | 90+ Days Past Due and Still Accruing
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	0
Consumer | Accruing Current Balances
Financing Receivable, Troubled Debt Restructuring [Line Items]
Total	$ 2,994