LOANS AND CREDIT QUALITY (Aging of Recorded Investment) (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	$ 5,332,852	$ 5,438,982
Nonaccrual Loans	11,018	7,008
Total Past Due and Nonaccrual	35,303	23,434
Nonaccrual Loans with No ACL	9,996	5,766
Accruing Loans 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	18,056	10,076
Accruing Loans 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	5,455	5,038
Accruing Loans 90+ Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	774	1,312
Financial Asset, Not Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	5,297,549	5,415,548
Commercial and industrial: \| Other
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	606,936	575,707
Nonaccrual Loans	414	432
Total Past Due and Nonaccrual	3,602	1,114
Nonaccrual Loans with No ACL	0	0
Commercial and industrial: \| Other \| Accruing Loans 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	2,978	513
Commercial and industrial: \| Other \| Accruing Loans 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	210	169
Commercial and industrial: \| Other \| Accruing Loans 90+ Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	0	0
Commercial and industrial: \| Other \| Financial Asset, Not Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	603,334	574,593
Real Estate \| Construction
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	145,211	185,519
Nonaccrual Loans	0	0
Total Past Due and Nonaccrual	0	0
Nonaccrual Loans with No ACL	0	0
Real Estate \| Construction \| Accruing Loans 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	0	0
Real Estate \| Construction \| Accruing Loans 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	0	0
Real Estate \| Construction \| Accruing Loans 90+ Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	0	0
Real Estate \| Construction \| Financial Asset, Not Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	145,211	185,519
Real Estate \| Residential mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	1,892,520	1,927,789
Nonaccrual Loans	9,044	4,962
Total Past Due and Nonaccrual	21,563	10,184
Nonaccrual Loans with No ACL	9,044	4,855
Real Estate \| Residential mortgage \| Accruing Loans 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	8,880	3,082
Real Estate \| Residential mortgage \| Accruing Loans 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	3,316	2,140
Real Estate \| Residential mortgage \| Accruing Loans 90+ Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	323	0
Real Estate \| Residential mortgage \| Financial Asset, Not Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	1,870,957	1,917,605
Real Estate \| Home equity
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	676,982	736,524
Nonaccrual Loans	952	834
Total Past Due and Nonaccrual	2,458	2,267
Nonaccrual Loans with No ACL	952	834
Real Estate \| Home equity \| Accruing Loans 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	943	804
Real Estate \| Home equity \| Accruing Loans 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	485	400
Real Estate \| Home equity \| Accruing Loans 90+ Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	78	229
Real Estate \| Home equity \| Financial Asset, Not Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	674,524	734,257
Real Estate \| Commercial mortgage
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	1,500,680	1,382,902
Nonaccrual Loans	0	77
Total Past Due and Nonaccrual	0	77
Nonaccrual Loans with No ACL	0	77
Real Estate \| Commercial mortgage \| Accruing Loans 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	0	0
Real Estate \| Commercial mortgage \| Accruing Loans 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	0	0
Real Estate \| Commercial mortgage \| Accruing Loans 90+ Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	0	0
Real Estate \| Commercial mortgage \| Financial Asset, Not Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	1,500,680	1,382,825
Consumer \| Consumer
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	510,523	630,541
Nonaccrual Loans	608	703
Total Past Due and Nonaccrual	7,680	9,792
Nonaccrual Loans with No ACL	0	0
Consumer \| Consumer \| Accruing Loans 30 - 59 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	5,255	5,677
Consumer \| Consumer \| Accruing Loans 60 - 89 Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	1,444	2,329
Consumer \| Consumer \| Accruing Loans 90+ Days Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	373	1,083
Consumer \| Consumer \| Financial Asset, Not Past Due
Aging Analysis of Accruing and Non-Accruing Loans and Leases
Loans	$ 502,843	$ 620,749

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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