LOANS AND CREDIT QUALITY (Class and Credit Indicator) (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	$ 319,151	$ 503,449
Fiscal year before current fiscal year	522,453	531,733
Two years before current fiscal year	491,073	302,328
Three years before current fiscal year	260,233	678,867
Four years before current fiscal year	601,881	922,561
Five years before current fiscal year	2,461,625	1,690,343
Amortized Cost of Revolving Loans	651,906	659,815
Loans	5,308,322	5,289,096
Commercial and industrial
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	44,342	63,780
Fiscal year before current fiscal year	47,136	168,128
Two years before current fiscal year	159,793	37,272
Three years before current fiscal year	30,883	56,913
Four years before current fiscal year	52,294	48,038
Five years before current fiscal year	141,643	116,471
Amortized Cost of Revolving Loans	114,313	103,990
Loans	590,404	594,592
Commercial and industrial \| Pass
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	40,635	63,780
Fiscal year before current fiscal year	45,706	166,412
Two years before current fiscal year	156,380	34,598
Three years before current fiscal year	27,412	56,913
Four years before current fiscal year	51,322	47,935
Five years before current fiscal year	140,025	115,991
Amortized Cost of Revolving Loans	114,166	103,393
Loans	575,646	589,022
Commercial and industrial \| Special Mention
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	1,773	0
Fiscal year before current fiscal year	0	660
Two years before current fiscal year	1,342	1,869
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Five years before current fiscal year	0	0
Amortized Cost of Revolving Loans	0	0
Loans	3,115	2,529
Commercial and industrial \| Substandard
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	1,934	0
Fiscal year before current fiscal year	1,430	1,056
Two years before current fiscal year	2,071	805
Three years before current fiscal year	3,471	0
Four years before current fiscal year	972	103
Five years before current fiscal year	1,618	480
Amortized Cost of Revolving Loans	147	597
Loans	11,643	3,041
Real Estate Portfolio Segment \| Construction
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	313	57,887
Fiscal year before current fiscal year	92,646	24,133
Two years before current fiscal year	38,826	24,091
Three years before current fiscal year	11,392	48,970
Four years before current fiscal year	14,965	17,741
Five years before current fiscal year	52,865	40,369
Amortized Cost of Revolving Loans	0	0
Loans	211,007	213,191
Real Estate Portfolio Segment \| Construction \| Pass
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	313	57,887
Fiscal year before current fiscal year	92,646	24,133
Two years before current fiscal year	38,826	24,091
Three years before current fiscal year	11,392	48,970
Four years before current fiscal year	14,965	17,741
Five years before current fiscal year	20,858	40,369
Amortized Cost of Revolving Loans	0	0
Loans	179,000	213,191
Real Estate Portfolio Segment \| Construction \| Substandard
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0
Fiscal year before current fiscal year	0
Two years before current fiscal year	0
Three years before current fiscal year	0
Four years before current fiscal year	0
Five years before current fiscal year	32,007
Amortized Cost of Revolving Loans	0
Loans	32,007
Real Estate Portfolio Segment \| Residential Mortgage
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	78,222	95,400
Fiscal year before current fiscal year	86,858	72,780
Two years before current fiscal year	53,832	79,628
Three years before current fiscal year	73,020	239,642
Four years before current fiscal year	228,591	556,932
Five years before current fiscal year	1,294,819	794,809
Amortized Cost of Revolving Loans	0	0
Loans	1,815,342	1,839,191
Real Estate Portfolio Segment \| Residential Mortgage \| Pass
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	78,222	95,400
Fiscal year before current fiscal year	86,858	72,780
Two years before current fiscal year	53,832	79,382
Three years before current fiscal year	72,787	237,379
Four years before current fiscal year	227,931	556,527
Five years before current fiscal year	1,286,444	786,487
Amortized Cost of Revolving Loans	0	0
Loans	1,806,074	1,827,955
Real Estate Portfolio Segment \| Residential Mortgage \| Substandard
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	246
Three years before current fiscal year	233	2,263
Four years before current fiscal year	660	405
Five years before current fiscal year	8,375	8,322
Amortized Cost of Revolving Loans	0	0
Loans	9,268	11,236
Real Estate Portfolio Segment \| Home Equity
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	44	416
Fiscal year before current fiscal year	447	988
Two years before current fiscal year	1,323	12,129
Three years before current fiscal year	10,368	25,112
Four years before current fiscal year	23,960	15,989
Five years before current fiscal year	44,192	33,338
Amortized Cost of Revolving Loans	496,949	512,110
Loans	577,283	600,082
Real Estate Portfolio Segment \| Home Equity \| Pass
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	44	416
Fiscal year before current fiscal year	447	988
Two years before current fiscal year	1,323	10,944
Three years before current fiscal year	9,183	25,112
Four years before current fiscal year	23,960	15,989
Five years before current fiscal year	44,192	31,915
Amortized Cost of Revolving Loans	492,515	511,625
Loans	571,664	596,989
Real Estate Portfolio Segment \| Home Equity \| Substandard
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	0	1,185
Three years before current fiscal year	1,185	0
Four years before current fiscal year	0	0
Five years before current fiscal year	0	1,423
Amortized Cost of Revolving Loans	4,434	485
Loans	5,619	3,093
Real Estate Portfolio Segment \| Commercial Mortgage
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	171,902	204,072
Fiscal year before current fiscal year	195,011	179,962
Two years before current fiscal year	161,828	94,900
Three years before current fiscal year	93,924	210,127
Four years before current fiscal year	207,957	212,255
Five years before current fiscal year	855,739	687,346
Amortized Cost of Revolving Loans	0	5,771
Loans	1,686,361	1,594,433
Real Estate Portfolio Segment \| Commercial Mortgage \| Pass
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	171,902	204,072
Fiscal year before current fiscal year	195,011	146,975
Two years before current fiscal year	124,390	92,107
Three years before current fiscal year	91,746	204,149
Four years before current fiscal year	202,073	210,061
Five years before current fiscal year	839,762	681,060
Amortized Cost of Revolving Loans	0	5,771
Loans	1,624,884	1,544,195
Real Estate Portfolio Segment \| Commercial Mortgage \| Special Mention
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	0
Two years before current fiscal year	2,018	593
Three years before current fiscal year	0	0
Four years before current fiscal year	0	0
Five years before current fiscal year	3,955	471
Amortized Cost of Revolving Loans	0	0
Loans	5,973	1,064
Real Estate Portfolio Segment \| Commercial Mortgage \| Substandard
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	0
Fiscal year before current fiscal year	0	32,987
Two years before current fiscal year	35,420	2,200
Three years before current fiscal year	2,178	5,978
Four years before current fiscal year	5,884	2,194
Five years before current fiscal year	12,022	5,815
Amortized Cost of Revolving Loans	0	0
Loans	55,504	49,174
Consumer
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	24,328	81,894
Fiscal year before current fiscal year	100,355	85,742
Two years before current fiscal year	75,471	54,308
Three years before current fiscal year	40,646	98,103
Four years before current fiscal year	74,114	71,606
Five years before current fiscal year	72,367	18,010
Amortized Cost of Revolving Loans	40,644	37,944
Loans	427,925	447,607
Consumer \| Pass
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	24,328	81,799
Fiscal year before current fiscal year	100,288	85,641
Two years before current fiscal year	75,356	54,227
Three years before current fiscal year	40,552	97,994
Four years before current fiscal year	74,114	71,458
Five years before current fiscal year	71,962	17,527
Amortized Cost of Revolving Loans	40,495	37,944
Loans	427,095	446,590
Consumer \| Substandard
Financing Receivable, before Allowance for Credit Loss, by Origination Year [Abstract]
Current fiscal year	0	95
Fiscal year before current fiscal year	67	101
Two years before current fiscal year	115	81
Three years before current fiscal year	94	109
Four years before current fiscal year	0	148
Five years before current fiscal year	405	483
Amortized Cost of Revolving Loans	149	0
Loans	$ 830	$ 1,017

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
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-Publisher FASB
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
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-Section 45
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-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
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-Name Accounting Standards Codification
-Section 50
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 79
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479294/326-20-55-79

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-6

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