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LOANS AND ALLOWANCE FOR LOAN LOSSES - Receivables Past Due (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Dec. 31, 2019
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | $ 17,279 | $ 18,008
Loans Past Due 90 Days or More and Still Accruing | 3 | 7
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 10,567 | 14,370
Loans Not Past Due | 1,492,179 | 1,298,533
Total recorded investment in loans | 1,502,746 | 1,312,903
30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 6,113 | 4,672
60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,082 | 1,668
90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3,372 | 8,029
Commercial and agricultural |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 396,698 | 230,922
Commercial Mortgages |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 672,540 | 650,570
Commercial Mortgages | Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 70 | 80
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Loans Not Past Due | 47,329 | 44,082
Total recorded investment in loans | 47,329 | 44,082
Commercial Mortgages | Construction | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Commercial Mortgages | Construction | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Commercial Mortgages | Construction | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Commercial Mortgages | Commercial mortgages |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 6,416 | 8,407
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3,274 | 2,883
Loans Not Past Due | 621,937 | 603,605
Total recorded investment in loans | 625,211 | 606,488
Commercial Mortgages | Commercial mortgages | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,046 | 441
Commercial Mortgages | Commercial mortgages | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 347 | 277
Commercial Mortgages | Commercial mortgages | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,881 | 2,165
Residential mortgages |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 2,537 | 2,155
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1,687 | 2,775
Loans Not Past Due | 207,006 | 186,099
Total recorded investment in loans | 208,693 | 188,874
Residential mortgages | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 590 | 1,016
Residential mortgages | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 364 | 803
Residential mortgages | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 733 | 956
Consumer Loans |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Total recorded investment in loans | 224,815 | 242,537
Consumer Loans | Home equity lines and loans |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1,061 | 641
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 329 | 653
Loans Not Past Due | 85,855 | 91,412
Total recorded investment in loans | 86,184 | 92,065
Consumer Loans | Home equity lines and loans | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 180 | 353
Consumer Loans | Home equity lines and loans | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 53 | 151
Consumer Loans | Home equity lines and loans | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 96 | 149
Consumer Loans | Indirect consumer loans |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 755 | 571
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 987 | 2,278
Loans Not Past Due | 124,331 | 133,088
Total recorded investment in loans | 125,318 | 135,366
Consumer Loans | Indirect consumer loans | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 499 | 1,546
Consumer Loans | Indirect consumer loans | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 102 | 377
Consumer Loans | Indirect consumer loans | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 386 | 355
Consumer Loans | Direct consumer loans |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 1 | 7
Loans Past Due 90 Days or More and Still Accruing | 0 | 0
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3 | 49
Loans Not Past Due | 13,310 | 15,057
Total recorded investment in loans | 13,313 | 15,106
Consumer Loans | Direct consumer loans | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 2 | 32
Consumer Loans | Direct consumer loans | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 1 | 11
Consumer Loans | Direct consumer loans | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 6
Commercial and industrial | Commercial and agricultural |  |
Financing Receivable, Past Due [Line Items] |  |
Non-accrual | 6,439 | 6,147
Loans Past Due 90 Days or More and Still Accruing | 3 | 7
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 4,287 | 5,732
Loans Not Past Due | 391,993 | 224,916
Total recorded investment in loans | 396,280 | 230,648
Commercial and industrial | Commercial and agricultural | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 3,796 | 1,285
Commercial and industrial | Commercial and agricultural | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 215 | 49
Commercial and industrial | Commercial and agricultural | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 276 | 4,398
Agricultural | Commercial and agricultural |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Loans Not Past Due | 418 | 274
Total recorded investment in loans | 418 | 274
Agricultural | Commercial and agricultural | 30 - 59 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Agricultural | Commercial and agricultural | 60 - 89 Days Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | 0 | 0
Agricultural | Commercial and agricultural | 90 Days or More Past Due |  |
Aging of the recorded investment in loans past due [Abstract] |  |
Past Due | $ 0 | $ 0

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