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LOANS - Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Business Activities Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | $ 5,818 | $ 12,751 | $ 5,291 | $ 12,371
Interest Income Recognized | 31 | 74 | 52 | 146
Business Activities Loans | Construction and land development |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average recorded investment, with related allowance | 205 | 1 | 208 | 2
Business Activities Loans | Other commercial real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average recorded investment, with no related allowance | 1,899 | 5,528 | 1,427 | 5,466
Interest income recognized, with no related allowance | 14 | 63 | 14 | 56
Average recorded investment, with related allowance | 429 | 3,217 | 452 | 2,972
Interest income recognized, with related allowance |  |  |  | 29
Business Activities Loans | Commercial |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average recorded investment, with no related allowance | 692 | 747 | 732 | 792
Interest income recognized, with no related allowance | 1 | 4 | 2 | 7
Average recorded investment, with related allowance | 212 | 654 | 97 | 497
Interest income recognized, with related allowance | 1 |  | 2 |
Business Activities Loans | Agricultural |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average recorded investment, with no related allowance | 157 |  | 101 |
Business Activities Loans | Residential mortgages |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average recorded investment, with no related allowance | 1,547 | 2,041 | 1,581 | 2,089
Interest income recognized, with no related allowance | 12 | 16 | 25 | 47
Average recorded investment, with related allowance | 665 | 551 | 681 | 540
Interest income recognized, with related allowance | 3 | 2 | 9 | 7
Business Activities Loans | Home equity |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average recorded investment, with related allowance | 12 | 12 | 12 | 13
Business Activities Loans | Total commercial real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 2,533 | 8,746 | 2,087 | 8,440
Interest Income Recognized | 14 | 52 | 14 | 85
Business Activities Loans | Commercial and industrial |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 1,061 | 1,401 | 930 | 1,289
Interest Income Recognized | 2 | 4 | 4 | 7
Business Activities Loans | Total residential real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 2,212 | 2,592 | 2,262 | 2,629
Interest Income Recognized | 15 | 18 | 34 | 54
Business Activities Loans | Total consumer |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 12 | 12 | 12 | 13
Acquired Loans |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 3,618 | 1,702 | 3,102 | 1,595
Interest Income Recognized | 3 |  | 3 |
Acquired Loans | Other commercial real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average recorded investment, with no related allowance | 1,566 | 88 | 1,097 | 89
Average recorded investment, with related allowance | 782 | 165 | 639 | 123
Interest income recognized, with related allowance | 3 |  | 3 |
Acquired Loans | Commercial |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average recorded investment, with no related allowance | 264 | 395 | 318 | 429
Average recorded investment, with related allowance | 67 |  | 75 |
Acquired Loans | Residential mortgages |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average recorded investment, with no related allowance | 519 | 702 | 541 | 593
Average recorded investment, with related allowance | 420 | 352 | 432 | 361
Acquired Loans | Total commercial real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 2,348 | 253 | 1,736 | 212
Interest Income Recognized | 3 |  | 3 |
Acquired Loans | Commercial and industrial |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | 331 | 395 | 393 | 429
Acquired Loans | Total residential real estate |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Average Recorded Investment | $ 939 | $ 1,054 | $ 973 | $ 954

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