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Basis of Presentation, Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
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Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | $ 15,250 | $ 18,552 | $ 17,556 | $ 17,304
Allowance for Credit Losses - Off-Balance Sheet credit Exposure | 1,229 | 165 | 165 | 165
Real Estate Loans [Member] | Residential [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 1,195 | 1,056 | 1,070 | 1,147
Real Estate Loans [Member] | Commercial [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 6,747 | 10,120 | 8,394 | 8,099
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 3,409 | 4,589 | 4,516 | 4,729
Real Estate Loans [Member] | Construction [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 851 | 801 | 497 | 434
Consumer [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 1,220 | 135 | 210 | 262
Other Commercial Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 712 | 1,040 | 1,380 | 1,023
Other Agricultural Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 250 | 489 | 551 | 558
State and Political Subdivision Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 42 | 322 | 285 | 281
Unallocated [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | $ 824 | 0 | $ 653 | $ 771
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | (3,300) |  |
Allowance for Credit Losses - Off-Balance Sheet credit Exposure |  | 1,064 |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Real Estate Loans [Member] | Residential [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 79 |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Real Estate Loans [Member] | Commercial [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | (3,070) |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | (1,145) |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Real Estate Loans [Member] | Construction [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | (103) |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Consumer [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 1,040 |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Other Commercial Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | (328) |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Other Agricultural Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | (219) |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | State and Political Subdivision Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | (280) |  |
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] | Unallocated [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 726 |  |
As Reported [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 15,252 |  |
Allowance for Credit Losses - Off-Balance Sheet credit Exposure |  | 1,229 |  |
As Reported [Member] | Real Estate Loans [Member] | Residential [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 1,135 |  |
As Reported [Member] | Real Estate Loans [Member] | Commercial [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 7,050 |  |
As Reported [Member] | Real Estate Loans [Member] | Agricultural [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 3,444 |  |
As Reported [Member] | Real Estate Loans [Member] | Construction [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 698 |  |
As Reported [Member] | Consumer [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 1,175 |  |
As Reported [Member] | Other Commercial Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 712 |  |
As Reported [Member] | Other Agricultural Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 270 |  |
As Reported [Member] | State and Political Subdivision Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | 42 |  |
As Reported [Member] | Unallocated [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses |  | $ 726 |  |

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