LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Amortized Cost Basis of Collateral Dependent Loans (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]
Individually evaluated for impairment	$ 102,314		$ 82,385
Allowance on Collateral Dependent Loans	241,615	$ 212,520	195,597	$ 195,316	$ 192,031	$ 192,757
Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	62,589		38,063
Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	10,060		22,482
Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	16,479		15,161
Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	10,626		5,511
Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	1,864		1,023
Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	696		145
Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	27,105		20,672
Commercial Real Estate \| Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Commercial Real Estate \| Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Commercial Real Estate \| Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	16,479		15,161
Commercial Real Estate \| Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	10,626		5,511
Commercial Real Estate \| Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Commercial Real Estate \| Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	12,620		23,650
Residential Real Estate \| Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Residential Real Estate \| Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	10,060		22,482
Residential Real Estate \| Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Residential Real Estate \| Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Residential Real Estate \| Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	1,864		1,023
Residential Real Estate \| Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	696		145
Business Assets and Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	62,589		38,063
Business Assets and Other \| Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	62,589		38,063
Business Assets and Other \| Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Business Assets and Other \| Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Business Assets and Other \| Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Business Assets and Other \| Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Business Assets and Other \| Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Individually evaluated for impairment	0		0
Allowance on Collateral Dependent Loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	27,335		17,280
Allowance on Collateral Dependent Loans \| Commercial and industrial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	24,080		13,157
Allowance on Collateral Dependent Loans \| Construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	167		0
Allowance on Collateral Dependent Loans \| Commercial real estate, non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	1,819		3,938
Allowance on Collateral Dependent Loans \| Commercial real estate, owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	934		0
Allowance on Collateral Dependent Loans \| Residential
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	318		166
Allowance on Collateral Dependent Loans \| Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Allowance on Collateral Dependent Loans	$ 17		$ 19