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LOANS - Average Recorded Investment and Interest Income Recognized on Impaired Loans (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Business Activities Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | $ 5,115 | $ 10,893
Interest Income Recognized | 75 | 115
Business Activities Loans | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with related allowance | 203 | 56
Interest income recognized, with related allowance |  | 1
Business Activities Loans | Other commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 392 | 5,434
Interest income recognized, with no related allowance |  | 55
Average recorded investment, with related allowance | 1,295 | 1,737
Interest income recognized, with related allowance | 14 |
Business Activities Loans | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 842 | 871
Interest income recognized, with no related allowance | 4 | 5
Average recorded investment, with related allowance |  | 153
Business Activities Loans | Agricultural |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 114 |
Interest income recognized, with no related allowance | 2 |
Business Activities Loans | Residential mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 641 | 2,089
Interest income recognized, with no related allowance | 17 | 47
Average recorded investment, with related allowance | 1,616 | 540
Interest income recognized, with related allowance | 37 | 7
Business Activities Loans | Home equity |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with related allowance | 12 | 13
Interest income recognized, with related allowance | 1 |
Business Activities Loans | Total commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 1,890 | 7,227
Interest Income Recognized | 14 | 56
Business Activities Loans | Total commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 956 | 1,024
Interest Income Recognized | 6 | 5
Business Activities Loans | Total residential real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 2,257 | 2,629
Interest Income Recognized | 54 | 54
Business Activities Loans | Total consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 12 | 13
Interest Income Recognized | 1 |
Acquired Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 2,952 | 1,654
Interest Income Recognized | 3 |
Acquired Loans | Other commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 1,218 | 89
Average recorded investment, with related allowance | 678 | 123
Interest income recognized, with related allowance | 3 |
Acquired Loans | Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 298 | 429
Average recorded investment, with related allowance | 73 |
Acquired Loans | Residential mortgages |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average recorded investment, with no related allowance | 436 | 652
Average recorded investment, with related allowance | 249 | 361
Acquired Loans | Total commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 1,896 | 212
Interest Income Recognized | 3 |
Acquired Loans | Total commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | 371 | 429
Acquired Loans | Total residential real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Average Recorded Investment | $ 685 | $ 1,013

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