ALLOWANCE FOR CREDIT LOSSES AND CREDIT QUALITY INFORMATION - Schedule of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	$ 107,602	$ 101,477
Equipment and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	4,073	20,704
Commercial | Commercial and industrial | Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	40,542	41,105
Commercial | Commercial and industrial | Equipment and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	4,044	20,704
Commercial | Owner-occupied commercial | Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	6,103	4,710
Commercial | Owner-occupied commercial | Equipment and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	0	0
Commercial | Commercial mortgages | Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	29,407	22,223
Commercial | Commercial mortgages | Equipment and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	0	0
Commercial | Construction | Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	23,180	25,600
Commercial | Construction | Equipment and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	0	0
Residential | Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	4,929	5,011
Residential | Equipment and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	0	0
Consumer | Property
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	3,441	2,828
Consumer | Equipment and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Amortized cost basis of non accruing collateral-dependent loans	$ 29	$ 0