LOANS AND ALLOWANCE FOR CREDIT LOSSES - Receivables Past Due (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Financing Receivable, Past Due [Line Items]
Financing receivable	$ 2,401,012	$ 2,269,561
30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	6,517	5,281
60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	1,629	1,446
90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	3,071	4,441
Total Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	11,217	11,168
Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	2,389,795	2,258,393
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Financing receivable	322,830	324,185
Commercial and industrial \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	1,667	817
Commercial and industrial \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	0	55
Commercial and industrial \| 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	132	36
Commercial and industrial \| Total Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	1,799	908
Commercial and industrial \| Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	321,031	323,277
Commercial real estate:
Financing Receivable, Past Due [Line Items]
Financing receivable	1,562,673	1,409,727
Commercial real estate: \| Construction
Financing Receivable, Past Due [Line Items]
Financing receivable	130,095	120,418
Commercial real estate: \| Construction \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	0	0
Commercial real estate: \| Construction \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	0	0
Commercial real estate: \| Construction \| 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	0	0
Commercial real estate: \| Construction \| Total Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	0	0
Commercial real estate: \| Construction \| Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	130,095	120,418
Commercial real estate: \| Owner occupied commercial real estate
Financing Receivable, Past Due [Line Items]
Financing receivable	188,710	178,620
Commercial real estate: \| Owner occupied commercial real estate \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	390	105
Commercial real estate: \| Owner occupied commercial real estate \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	101	0
Commercial real estate: \| Owner occupied commercial real estate \| 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	0	96
Commercial real estate: \| Owner occupied commercial real estate \| Total Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	491	201
Commercial real estate: \| Owner occupied commercial real estate \| Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	188,219	178,419
Commercial real estate: \| Non-owner occupied commercial real estate
Financing Receivable, Past Due [Line Items]
Financing receivable	1,243,868	1,110,689
Commercial real estate: \| Non-owner occupied commercial real estate \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	108	0
Commercial real estate: \| Non-owner occupied commercial real estate \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	376	0
Commercial real estate: \| Non-owner occupied commercial real estate \| 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	515	2,538
Commercial real estate: \| Non-owner occupied commercial real estate \| Total Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	999	2,538
Commercial real estate: \| Non-owner occupied commercial real estate \| Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	1,242,869	1,108,151
Residential Mortgages
Financing Receivable, Past Due [Line Items]
Financing receivable	287,300	286,885
Residential Mortgages \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	2,132	1,277
Residential Mortgages \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	405	693
Residential Mortgages \| 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	974	901
Residential Mortgages \| Total Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	3,511	2,871
Residential Mortgages \| Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	283,789	284,014
Consumer Loans
Financing Receivable, Past Due [Line Items]
Financing receivable	228,209	248,764
Consumer Loans \| Home equity lines and loans
Financing Receivable, Past Due [Line Items]
Financing receivable	117,901	109,723
Consumer Loans \| Home equity lines and loans \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	723	747
Consumer Loans \| Home equity lines and loans \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	264	26
Consumer Loans \| Home equity lines and loans \| 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	931	249
Consumer Loans \| Home equity lines and loans \| Total Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	1,918	1,022
Consumer Loans \| Home equity lines and loans \| Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	115,983	108,701
Consumer Loans \| Indirect consumer loans
Financing Receivable, Past Due [Line Items]
Financing receivable	104,214	132,699
Consumer Loans \| Indirect consumer loans \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	1,467	2,312
Consumer Loans \| Indirect consumer loans \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	483	656
Consumer Loans \| Indirect consumer loans \| 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	509	616
Consumer Loans \| Indirect consumer loans \| Total Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	2,459	3,584
Consumer Loans \| Indirect consumer loans \| Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	101,755	129,115
Consumer Loans \| Direct consumer loans
Financing Receivable, Past Due [Line Items]
Financing receivable	6,094	6,342
Consumer Loans \| Direct consumer loans \| 30 - 59 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	30	23
Consumer Loans \| Direct consumer loans \| 60 - 89 Days Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	0	16
Consumer Loans \| Direct consumer loans \| 90 Days or More Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	10	5
Consumer Loans \| Direct consumer loans \| Total Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	40	44
Consumer Loans \| Direct consumer loans \| Loans Not Past Due
Financing Receivable, Past Due [Line Items]
Financing receivable	$ 6,054	$ 6,298