LOANS AND THE ALLOWANCE FOR CREDIT LOSSES - Summary of nonaccrual loans with collateral (Details) - USD ($) $ in Thousands	Mar. 31, 2026	Dec. 31, 2025
Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Credit Loss	$ 16,311	$ 16,559
Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Credit Loss	1,704	1,704
Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Credit Loss	14,607	14,855
Cash, securities, and other | Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Credit Loss	1,704	1,704
Cash, securities, and other | Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Credit Loss	1,704	1,704
Cash, securities, and other | Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Credit Loss	0	0
Commercial and Industrial | Total Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Credit Loss	14,607	14,855
Commercial and Industrial | Secured by Cash and Securities
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Credit Loss	0	0
Commercial and Industrial | Secured by Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Individually Evaluated for Credit Loss	$ 14,607	$ 14,855