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Loans, Impaired Financing Receivable (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Impaired Financing Receivable [Abstract] |  |  |  |  |
Unpaid Principal Balance | $ 18,121 |  | $ 18,121 |  | $ 19,050
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |  |  |
Recorded Investment With No Allowance | 12,158 |  | 12,158 |  | 13,047
Recorded Investment With Allowance | 3,864 |  | 3,864 |  | 4,230
Total Recorded Investment | 16,022 |  | 16,022 |  | 17,277
Related Allowance | 269 |  | 269 |  | 510
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Average Recorded Investment | 16,210 | $ 19,619 | 16,619 | $ 19,589 |
Interest Income Recognized | 94 | 143 | 192 | 278 |
Interest Income Recognized Cash Basis | 8 | 0 | 15 | 2 |
Real Estate Loans [Member] | Mortgages [Member] |  |  |  |  |
Impaired Financing Receivable [Abstract] |  |  |  |  |
Unpaid Principal Balance | 766 |  | 766 |  | 1,070
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |  |  |
Recorded Investment With No Allowance | 574 |  | 574 |  | 740
Recorded Investment With Allowance | 48 |  | 48 |  | 123
Total Recorded Investment | 622 |  | 622 |  | 863
Related Allowance | 9 |  | 9 |  | 9
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Average Recorded Investment | 718 | 1,062 | 784 | 1,047 |
Interest Income Recognized | 3 | 5 | 8 | 10 |
Interest Income Recognized Cash Basis | 0 | 0 | 0 | 0 |
Real Estate Loans [Member] | Home Equity [Member] |  |  |  |  |
Impaired Financing Receivable [Abstract] |  |  |  |  |
Unpaid Principal Balance | 103 |  | 103 |  | 150
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |  |  |
Recorded Investment With No Allowance | 40 |  | 40 |  | 70
Recorded Investment With Allowance | 46 |  | 46 |  | 57
Total Recorded Investment | 86 |  | 86 |  | 127
Related Allowance | 7 |  | 7 |  | 9
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Average Recorded Investment | 109 | 142 | 117 | 144 |
Interest Income Recognized | 2 | 1 | 3 | 3 |
Interest Income Recognized Cash Basis | 0 | 0 | 0 | 0 |
Real Estate Loans [Member] | Commercial [Member] |  |  |  |  |
Impaired Financing Receivable [Abstract] |  |  |  |  |
Unpaid Principal Balance | 9,691 |  | 9,691 |  | 9,847
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |  |  |
Recorded Investment With No Allowance | 7,941 |  | 7,941 |  | 8,323
Recorded Investment With Allowance | 903 |  | 903 |  | 860
Total Recorded Investment | 8,844 |  | 8,844 |  | 9,183
Related Allowance | 97 |  | 97 |  | 95
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Average Recorded Investment | 8,781 | 11,572 | 9,009 | 11,529 |
Interest Income Recognized | 67 | 115 | 134 | 219 |
Interest Income Recognized Cash Basis | 8 | 0 | 15 | 2 |
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |  |
Impaired Financing Receivable [Abstract] |  |  |  |  |
Unpaid Principal Balance | 4,742 |  | 4,742 |  | 4,811
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |  |  |
Recorded Investment With No Allowance | 2,756 |  | 2,756 |  | 2,799
Recorded Investment With Allowance | 1,734 |  | 1,734 |  | 1,846
Total Recorded Investment | 4,490 |  | 4,490 |  | 4,645
Related Allowance | 12 |  | 12 |  | 83
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Average Recorded Investment | 4,497 | 3,746 | 4,543 | 3,761 |
Interest Income Recognized | 21 | 19 | 43 | 40 |
Interest Income Recognized Cash Basis | 0 | 0 | 0 | 0 |
Consumer [Member] |  |  |  |  |
Impaired Financing Receivable [Abstract] |  |  |  |  |
Unpaid Principal Balance | 0 |  | 0 |  | 2
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |  |  |
Recorded Investment With No Allowance | 0 |  | 0 |  | 2
Recorded Investment With Allowance | 0 |  | 0 |  | 0
Total Recorded Investment | 0 |  | 0 |  | 2
Related Allowance | 0 |  | 0 |  | 0
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Average Recorded Investment | 0 | 2 | 1 | 3 |
Interest Income Recognized | 0 | 0 | 0 | 0 |
Interest Income Recognized Cash Basis | 0 | 0 | 0 | 0 |
Other Commercial Loans [Member] |  |  |  |  |
Impaired Financing Receivable [Abstract] |  |  |  |  |
Unpaid Principal Balance | 1,572 |  | 1,572 |  | 1,908
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |  |  |
Recorded Investment With No Allowance | 832 |  | 832 |  | 1,094
Recorded Investment With Allowance | 101 |  | 101 |  | 241
Total Recorded Investment | 933 |  | 933 |  | 1,335
Related Allowance | 35 |  | 35 |  | 170
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Average Recorded Investment | 1,023 | 1,805 | 1,072 | 1,822 |
Interest Income Recognized | 0 | 1 | 1 | 2 |
Interest Income Recognized Cash Basis | 0 | 0 | 0 | 0 |
Other Agricultural Loans [Member] |  |  |  |  |
Impaired Financing Receivable [Abstract] |  |  |  |  |
Unpaid Principal Balance | 1,247 |  | 1,247 |  | 1,262
Impaired Financing Receivable, Recorded Investment [Abstract] |  |  |  |  |
Recorded Investment With No Allowance | 15 |  | 15 |  | 19
Recorded Investment With Allowance | 1,032 |  | 1,032 |  | 1,103
Total Recorded Investment | 1,047 |  | 1,047 |  | 1,122
Related Allowance | 109 |  | 109 |  | $ 144
Impaired Financing Receivable, Average Recorded Investment [Abstract] |  |  |  |  |
Average Recorded Investment | 1,082 | 1,290 | 1,093 | 1,283 |
Interest Income Recognized | 1 | 2 | 3 | 4 |
Interest Income Recognized Cash Basis | $ 0 | $ 0 | $ 0 | $ 0 |

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