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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loan Portfolio (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees	$ 2,071,419	$ 1,972,664
Allowance for credit losses	(21,388)	(22,517)	$ (19,659)
Loans, net	2,050,031	1,950,147
Commercial Mortgages
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees	1,217,004	1,122,925
Allowance for credit losses	(11,214)	(12,026)	(11,576)
Commercial Mortgages | Construction
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees	94,943	138,887
Commercial Mortgages | Commercial mortgages, other
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees	1,122,061	984,038
Residential Mortgages
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees	274,979	277,992
Allowance for credit losses	(2,259)	(2,194)	(1,845)
Consumer loans:
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees	279,915	307,351
Allowance for credit losses	(3,395)	(3,242)	$ (2,865)
Consumer loans: | Home equity lines and loans
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees	93,220	87,056
Consumer loans: | Indirect consumer loans
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees	178,118	210,423
Consumer loans: | Direct consumer loans
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees	8,577	9,872
Commercial and industrial
Composition of loan portfolio [Abstract]
Total loans, net of deferred loan fees	$ 299,521	$ 264,396

X

- Definition

Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease.

+ References

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

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- Definition

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

+ References

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

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- Definition

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/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479344/326-20-45-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3B

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-5

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