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LOANS AND ALLOWANCE FOR LOAN LOSSES - Allowances (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Dec. 31, 2019
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance | $ 24,130 | $ 19,656 | $ 23,478 | $ 18,944 |  |
Charge-offs | (326) | (302) | (3,248) | (1,155) |  |
Recoveries | 107 | 128 | 371 | 450 |  |
Net recoveries (charge-offs) | (219) | (174) | (2,877) | (705) |  |
Provision | 679 | 4,441 | 3,989 | 5,684 |  |
Ending balance | 24,590 | 23,923 | 24,590 | 23,923 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | $ 5,766 | $ 8,097
Collectively evaluated for impairment |  |  |  |  | 18,824 | 15,381
Total ending allowance balance | 24,590 | 23,923 | 23,478 | 18,944 | 24,590 | 23,478
Loans [Abstract] |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  | 16,354 | 15,665
Loans collectively evaluated for impairment |  |  |  |  | 1,527,174 | 1,297,238
Total ending loans balance |  |  |  |  | 1,543,528 | 1,312,903
Commercial and Agricultural |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance | 8,327 | 5,476 | 10,227 | 5,383 |  |
Charge-offs | (68) | 0 | (134) | (55) |  |
Recoveries | 18 | 29 | 27 | 44 |  |
Net recoveries (charge-offs) | (50) | 29 | (107) | (11) |  |
Provision | 180 | 4,651 | (1,663) | 4,784 |  |
Ending balance | 8,457 | 10,156 | 8,457 | 10,156 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 5,530 | 6,000
Collectively evaluated for impairment |  |  |  |  | 2,927 | 4,227
Total ending allowance balance | 8,457 | 10,156 | 10,227 | 5,383 | 8,457 | 10,227
Loans [Abstract] |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  | 7,515 | 6,147
Loans collectively evaluated for impairment |  |  |  |  | 398,498 | 224,775
Total ending loans balance |  |  |  |  | 406,013 | 230,922
Commercial mortgages: |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance | 10,549 | 9,545 | 8,869 | 8,184 |  |
Charge-offs | 0 | 0 | (2,143) | 0 |  |
Recoveries | 2 | 0 | 2 | 2 |  |
Net recoveries (charge-offs) | 2 | 0 | (2,141) | 2 |  |
Provision | 361 | (285) | 4,184 | 1,074 |  |
Ending balance | 10,912 | 9,260 | 10,912 | 9,260 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 184 | 2,097
Collectively evaluated for impairment |  |  |  |  | 10,728 | 6,772
Total ending allowance balance | 10,912 | 9,260 | 8,869 | 9,260 | 10,912 | 8,869
Loans [Abstract] |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  | 6,750 | 8,844
Loans collectively evaluated for impairment |  |  |  |  | 686,185 | 641,726
Total ending loans balance |  |  |  |  | 692,935 | 650,570
Residential mortgages |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance | 1,891 | 1,229 | 1,252 | 1,226 |  |
Charge-offs | (42) | (19) | (56) | (60) |  |
Recoveries | 0 | 0 | 49 | 45 |  |
Net recoveries (charge-offs) | (42) | (19) | (7) | (15) |  |
Provision | 232 | (26) | 836 | (27) |  |
Ending balance | 2,081 | 1,184 | 2,081 | 1,184 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 0 | 0
Collectively evaluated for impairment |  |  |  |  | 2,081 | 1,252
Total ending allowance balance | 2,081 | 1,184 | 2,081 | 1,226 | 2,081 | 1,252
Loans [Abstract] |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  | 1,277 | 525
Loans collectively evaluated for impairment |  |  |  |  | 226,707 | 188,349
Total ending loans balance |  |  |  |  | 227,984 | 188,874
Consumer loans: |  |  |  |  |  |
Allowance for loan losses, by portfolio segment [Roll Forward] |  |  |  |  |  |
Beginning balance | 3,363 | 3,406 | 3,130 | 4,151 |  |
Charge-offs | (216) | (283) | (915) | (1,040) |  |
Recoveries | 87 | 99 | 293 | 359 |  |
Net recoveries (charge-offs) | (129) | (184) | (622) | (681) |  |
Provision | (94) | 101 | 632 | (147) |  |
Ending balance | 3,140 | 3,323 | 3,140 | 3,323 |  |
Ending allowance balance attributable to loans [Abstract] |  |  |  |  |  |
Individually evaluated for impairment |  |  |  |  | 52 | 0
Collectively evaluated for impairment |  |  |  |  | 3,088 | 3,130
Total ending allowance balance | $ 3,140 | $ 3,323 | $ 3,140 | $ 4,151 | 3,140 | 3,130
Loans [Abstract] |  |  |  |  |  |
Loans individually evaluated for impairment |  |  |  |  | 812 | 149
Loans collectively evaluated for impairment |  |  |  |  | 215,784 | 242,388
Total ending loans balance |  |  |  |  | $ 216,596 | $ 242,537

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