LOANS AND LEASES - Financial Difficulty Modifications, Payment Status (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Financing Receivable, Past Due [Line Items]
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 500	$ 600	$ 2,200	$ 1,800
Financial Receivables, Financial Difficulty Modifications	24,095	17,959	24,095	17,959
Financial Receivables, Financial Difficulty Modifications	24,095	17,959	24,095	17,959
Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	21,270	16,693	21,270	16,693
Financial Receivables, Financial Difficulty Modifications	21,270	16,693	21,270	16,693
Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	35	114	35	114
Financial Receivables, Financial Difficulty Modifications	35	114	35	114
Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	550	337	550	337
Financial Receivables, Financial Difficulty Modifications	550	337	550	337
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	2,240	815	2,240	815
Financial Receivables, Financial Difficulty Modifications	2,240	815	2,240	815
Residential Portfolio Segment [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	3,319	3,821	3,319	3,821
Financial Receivables, Financial Difficulty Modifications	3,319	3,821	3,319	3,821
Residential Portfolio Segment [Member] \| Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	2,443	3,037	2,443	3,037
Financial Receivables, Financial Difficulty Modifications	2,443	3,037	2,443	3,037
Residential Portfolio Segment [Member] \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0	97	0	97
Financial Receivables, Financial Difficulty Modifications	0	97	0	97
Residential Portfolio Segment [Member] \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	355	337	355	337
Financial Receivables, Financial Difficulty Modifications	355	337	355	337
Residential Portfolio Segment [Member] \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	521	350	521	350
Financial Receivables, Financial Difficulty Modifications	521	350	521	350
Home equity
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	3,054	1,070	3,054	1,070
Financial Receivables, Financial Difficulty Modifications	3,054	1,070	3,054	1,070
Home equity \| Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	2,778	955	2,778	955
Financial Receivables, Financial Difficulty Modifications	2,778	955	2,778	955
Home equity \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	35	17	35	17
Financial Receivables, Financial Difficulty Modifications	35	17	35	17
Home equity \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	195	0	195	0
Financial Receivables, Financial Difficulty Modifications	195	0	195	0
Home equity \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	46	98	46	98
Financial Receivables, Financial Difficulty Modifications	46	98	46	98
Commercial
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	8,105	12,594	8,105	12,594
Financial Receivables, Financial Difficulty Modifications	8,105	12,594	8,105	12,594
Commercial \| Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	6,783	12,227	6,783	12,227
Financial Receivables, Financial Difficulty Modifications	6,783	12,227	6,783	12,227
Commercial \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0	0	0	0
Financial Receivables, Financial Difficulty Modifications	0	0	0	0
Commercial \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0	0	0	0
Financial Receivables, Financial Difficulty Modifications	0	0	0	0
Commercial \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	1,322	367	1,322	367
Financial Receivables, Financial Difficulty Modifications	1,322	367	1,322	367
Construction real estate
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	351		351
Financial Receivables, Financial Difficulty Modifications	351		351
Construction real estate \| Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0		0
Financial Receivables, Financial Difficulty Modifications	0		0
Construction real estate \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0		0
Financial Receivables, Financial Difficulty Modifications	0		0
Construction real estate \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0		0
Financial Receivables, Financial Difficulty Modifications	0		0
Construction real estate \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	351		351
Financial Receivables, Financial Difficulty Modifications	351		351
Commercial real estate - investor
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	9,266	474	9,266	474
Financial Receivables, Financial Difficulty Modifications	9,266	474	9,266	474
Commercial real estate - investor \| Financial Asset, 1 to 29 Days Past Due
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	9,266	474	9,266	474
Financial Receivables, Financial Difficulty Modifications	9,266	474	9,266	474
Commercial real estate - investor \| Financial Asset, 30 to 59 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0	0	0	0
Financial Receivables, Financial Difficulty Modifications	0	0	0	0
Commercial real estate - investor \| Financial Asset, 60 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0	0	0	0
Financial Receivables, Financial Difficulty Modifications	0	0	0	0
Commercial real estate - investor \| Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Financial Receivables, Financial Difficulty Modifications	0	0	0	0
Financial Receivables, Financial Difficulty Modifications	$ 0	$ 0	$ 0	$ 0