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LOANS AND RELATED ALLOWANCE FOR LOAN LOSSES, Impaired Financing Receivable (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Impaired Financing Receivable [Abstract] |  |  |
Unpaid Principal Balance | $ 21,220 | $ 27,160 |
Recorded Investment With No Allowance | 14,865 | 16,802 |
Recorded Investment With Allowance | 4,807 | 6,648 |
Total Recorded Investment | 19,672 | 23,450 |
Related Allowance | 735 | 676 |
Average Recorded Investment | 21,294 | 24,743 | $ 22,392
Interest Income Recognized | 558 | 786 | 750
Interest Income Recognized Cash Basis | 24 | 20 | 59
Real Estate Loans [Member] | Mortgages [Member] |  |  |
Impaired Financing Receivable [Abstract] |  |  |
Unpaid Principal Balance | 1,212 | 932 |
Recorded Investment With No Allowance | 794 | 515 |
Recorded Investment With Allowance | 223 | 288 |
Total Recorded Investment | 1,017 | 803 |
Related Allowance | 20 | 10 |
Average Recorded Investment | 1,062 | 944 | 900
Interest Income Recognized | 16 | 13 | 13
Interest Income Recognized Cash Basis | 0 | 0 | 0
Real Estate Loans [Member] | Home Equity [Member] |  |  |
Impaired Financing Receivable [Abstract] |  |  |
Unpaid Principal Balance | 170 | 106 |
Recorded Investment With No Allowance | 83 | 12 |
Recorded Investment With Allowance | 66 | 75 |
Total Recorded Investment | 149 | 87 |
Related Allowance | 12 | 14 |
Average Recorded Investment | 119 | 95 | 67
Interest Income Recognized | 6 | 4 | 4
Interest Income Recognized Cash Basis | 0 | 0 | 0
Real Estate Loans [Member] | Commercial [Member] |  |  |
Impaired Financing Receivable [Abstract] |  |  |
Unpaid Principal Balance | 12,070 | 16,326 |
Recorded Investment With No Allowance | 10,723 | 11,933 |
Recorded Investment With Allowance | 814 | 1,394 |
Total Recorded Investment | 11,537 | 13,327 |
Related Allowance | 251 | 216 |
Average Recorded Investment | 11,756 | 13,907 | 11,567
Interest Income Recognized | 453 | 506 | 385
Interest Income Recognized Cash Basis | 24 | 20 | 7
Real Estate Loans [Member] | Agricultural [Member] |  |  |
Impaired Financing Receivable [Abstract] |  |  |
Unpaid Principal Balance | 3,900 | 5,598 |
Recorded Investment With No Allowance | 1,580 | 2,386 |
Recorded Investment With Allowance | 2,202 | 3,206 |
Total Recorded Investment | 3,782 | 5,592 |
Related Allowance | 151 | 84 |
Average Recorded Investment | 4,899 | 4,736 | 3,574
Interest Income Recognized | 78 | 151 | 131
Interest Income Recognized Cash Basis | 0 | 0 | 0
Consumer [Member] |  |  |
Impaired Financing Receivable [Abstract] |  |  |
Unpaid Principal Balance | 4 |  |
Recorded Investment With No Allowance | 4 |  |
Recorded Investment With Allowance | 0 |  |
Total Recorded Investment | 4 |  |
Related Allowance | 0 |  |
Average Recorded Investment | 2 | 1 | 3
Interest Income Recognized | 0 | 0 | 0
Interest Income Recognized Cash Basis | 0 | 0 | 0
Other Commercial Loans [Member] |  |  |
Impaired Financing Receivable [Abstract] |  |  |
Unpaid Principal Balance | 2,517 | 2,711 |
Recorded Investment With No Allowance | 1,555 | 1,836 |
Recorded Investment With Allowance | 347 | 370 |
Total Recorded Investment | 1,902 | 2,206 |
Related Allowance | 147 | 193 |
Average Recorded Investment | 2,056 | 3,659 | 4,790
Interest Income Recognized | 1 | 89 | 152
Interest Income Recognized Cash Basis | 0 | 0 | 52
Other Agricultural Loans [Member] |  |  |
Impaired Financing Receivable [Abstract] |  |  |
Unpaid Principal Balance | 1,347 | 1,487 |
Recorded Investment With No Allowance | 126 | 120 |
Recorded Investment With Allowance | 1,155 | 1,315 |
Total Recorded Investment | 1,281 | 1,435 |
Related Allowance | 154 | 159 |
Average Recorded Investment | 1,400 | 1,401 | 1,491
Interest Income Recognized | 4 | 23 | 65
Interest Income Recognized Cash Basis | $ 0 | $ 0 | $ 0

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