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LOANS AND ALLOWANCE FOR LOAN LOSSES - Loan Portfolio (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Composition of loan portfolio [Abstract] |  |
Loans, net of deferred loan fees | $ 1,538,493 | $ 1,309,219
Interest receivable on loans | 5,035 | 3,684
Total ending loans balance | 1,543,528 | 1,312,903
Commercial and Agricultural |  |
Composition of loan portfolio [Abstract] |  |
Total ending loans balance | 406,013 | 230,922
Commercial mortgages: |  |
Composition of loan portfolio [Abstract] |  |
Total ending loans balance | 692,935 | 650,570
Commercial mortgages: | Construction |  |
Composition of loan portfolio [Abstract] |  |
Loans, net of deferred loan fees | 54,332 | 43,962
Total ending loans balance | 54,523 | 44,082
Commercial mortgages: | Commercial mortgages |  |
Composition of loan portfolio [Abstract] |  |
Loans, net of deferred loan fees | 636,179 | 604,832
Total ending loans balance | 638,412 | 606,488
Residential mortgages |  |
Composition of loan portfolio [Abstract] |  |
Loans, net of deferred loan fees | 227,372 | 188,338
Total ending loans balance | 227,984 | 188,874
Consumer loans: |  |
Composition of loan portfolio [Abstract] |  |
Total ending loans balance | 216,596 | 242,537
Consumer loans: | Home equity lines and loans |  |
Composition of loan portfolio [Abstract] |  |
Loans, net of deferred loan fees | 81,556 | 91,784
Total ending loans balance | 81,770 | 92,065
Consumer loans: | Indirect consumer loans |  |
Composition of loan portfolio [Abstract] |  |
Loans, net of deferred loan fees | 121,406 | 134,973
Total ending loans balance | 121,720 | 135,366
Consumer loans: | Direct consumer loans |  |
Composition of loan portfolio [Abstract] |  |
Loans, net of deferred loan fees | 13,055 | 15,038
Total ending loans balance | 13,106 | 15,106
Commercial and industrial |  |
Composition of loan portfolio [Abstract] |  |
Payroll Protection Program Loans - CARES Act | 189,800 |
Commercial and industrial | Commercial and Agricultural |  |
Composition of loan portfolio [Abstract] |  |
Loans, net of deferred loan fees | 403,911 | 230,018
Total ending loans balance | 405,329 | 230,648
Agricultural | Commercial and Agricultural |  |
Composition of loan portfolio [Abstract] |  |
Loans, net of deferred loan fees | 682 | 274
Total ending loans balance | $ 684 | $ 274

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