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LOANS AND ALLOWANCE FOR LOAN LOSSES - Loan Portfolio (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Composition of loan portfolio [Abstract] |  |
Total loans, net of deferred loan fees and costs | $ 1,516,668 | $ 1,536,463
Interest receivable on loans | 4,261 | 5,035
Total ending loans balance | 1,520,929 | 1,541,498
Commercial and industrial |  |
Composition of loan portfolio [Abstract] |  |
Payroll protection program loans | 68,100 | 150,900
Commercial and agricultural: |  |
Composition of loan portfolio [Abstract] |  |
Total ending loans balance | 271,872 | 370,252
Commercial and agricultural: | Commercial and industrial |  |
Composition of loan portfolio [Abstract] |  |
Total loans, net of deferred loan fees and costs | 270,656 | 368,663
Total ending loans balance | 271,451 | 369,968
Commercial and agricultural: | Agricultural |  |
Composition of loan portfolio [Abstract] |  |
Total loans, net of deferred loan fees and costs | 419 | 283
Total ending loans balance | 421 | 284
Commercial mortgages: |  |
Composition of loan portfolio [Abstract] |  |
Total ending loans balance | 791,476 | 719,145
Commercial mortgages: | Construction |  |
Composition of loan portfolio [Abstract] |  |
Total loans, net of deferred loan fees and costs | 67,445 | 61,945
Total ending loans balance | 67,644 | 62,164
Commercial mortgages: | Commercial mortgages |  |
Composition of loan portfolio [Abstract] |  |
Total loans, net of deferred loan fees and costs | 721,709 | 654,663
Total ending loans balance | 723,832 | 656,981
Residential mortgages |  |
Composition of loan portfolio [Abstract] |  |
Total loans, net of deferred loan fees and costs | 253,991 | 239,401
Total ending loans balance | 254,641 | 240,013
Consumer loans: |  |
Composition of loan portfolio [Abstract] |  |
Total ending loans balance | 202,940 | 212,088
Consumer loans: | Home equity lines and loans |  |
Composition of loan portfolio [Abstract] |  |
Total loans, net of deferred loan fees and costs | 72,471 | 78,547
Total ending loans balance | 72,653 | 78,761
Consumer loans: | Indirect consumer loans |  |
Composition of loan portfolio [Abstract] |  |
Total loans, net of deferred loan fees and costs | 119,772 | 120,538
Total ending loans balance | 120,045 | 120,853
Consumer loans: | Direct consumer loans |  |
Composition of loan portfolio [Abstract] |  |
Total loans, net of deferred loan fees and costs | 10,205 | 12,423
Total ending loans balance | $ 10,242 | $ 12,474

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