LOANS AND ALLOWANCE FOR CREDIT LOSSES - Collateral Dependent (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized Cost Basis	$ 5,943		$ 4,187
Related Allowance	25,232	$ 24,890	24,209	$ 22,665	$ 22,522	$ 21,388
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized Cost Basis	3,072		693
Related Allowance	4,213	4,339	4,524	4,524	5,153	4,520
Commercial real estate:
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized Cost Basis	2,564		3,167
Related Allowance	16,198	15,643	14,363	12,714	12,089	11,214
Consumer Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized Cost Basis	307		327
Related Allowance	2,420	$ 2,511	2,534	$ 2,830	$ 2,807	$ 3,395
Collateral Pledged
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized Cost Basis	3,288		2,173
Related Allowance	210		203
Commercial Real Estate And Business Assets | Commercial and Industrial | Commercial and industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized Cost Basis	2,410		50
Related Allowance	0		0
Commercial Real Estate and Residential Real Estate | Commercial real estate: | Owner occupied commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized Cost Basis	51		629
Related Allowance	0		4
Commercial Real Estate and Residential Real Estate | Commercial real estate: | Non-owner occupied commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized Cost Basis	520		1,167
Related Allowance	210		199
Residential Real Estate | Consumer Loans | Home equity lines and loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Amortized Cost Basis	307		327
Related Allowance	$ 0		$ 0