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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
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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 |

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