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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, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022
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Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | $ 21,598 | $ 21,153 | $ 15,250 | $ 18,552
Allowance for Credit Losses - Off-Balance Sheet credit Exposure | 938 | 1,265 | 1,229 | 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 | 2,347 | 2,354 | 1,195 | 1,056
Real Estate Loans [Member] | Commercial [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 9,741 | 9,178 | 6,747 | 10,120
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 3,672 | 3,264 | 3,409 | 4,589
Real Estate Loans [Member] | Construction [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 1,595 | 1,950 | 851 | 801
Consumer [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 1,266 | 1,496 | 1,220 | 135
Other Commercial Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 2,680 | 2,229 | 712 | 1,040
Other Agricultural Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 174 | 270 | 250 | 489
State and Political Subdivision Loans [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | 65 | 45 | 42 | 322
Unallocated [Member] |  |  |  |
Impact of Change from Incurred Loss Model to Current Expected Credit Loss Model [Abstract] |  |  |  |
Allowance for Credit Losses | $ 58 | $ 367 | $ 824 | 0
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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