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Loans, Allowance for Loan Losses by Portfolio Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period | $ 21,153 | $ 18,552 | $ 18,552
Charge-offs | (674) | (7) |
Recoveries | 7 | 5 |
Provision | 1,112 | 0 |
Balance at end of period | 21,598 | 15,250 | 21,153
Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period |  | (3,300) | (3,300)
Residential [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Charge-offs | 0 |  | (1)
Commercial [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Charge-offs | 0 |  | 0
Construction [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Charge-offs | 0 |  | 0
Real Estate Loans [Member] | Residential [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period | 2,354 | 1,056 | 1,056
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision | (7) | 60 |
Balance at end of period | 2,347 | 1,195 | 2,354
Real Estate Loans [Member] | Residential [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period |  | 79 | 79
Real Estate Loans [Member] | Commercial [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period | 9,178 | 10,120 | 10,120
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision | 563 | (303) |
Balance at end of period | 9,741 | 6,747 | 9,178
Real Estate Loans [Member] | Commercial [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period |  | (3,070) | (3,070)
Real Estate Loans [Member] | Agricultural [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period | 3,264 | 4,589 | 4,589
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision | 408 | (35) |
Balance at end of period | 3,672 | 3,409 | 3,264
Real Estate Loans [Member] | Agricultural [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period |  | (1,145) | (1,145)
Real Estate Loans [Member] | Construction [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period | 1,950 | 801 | 801
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision | (355) | 153 |
Balance at end of period | 1,595 | 851 | 1,950
Real Estate Loans [Member] | Construction [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period |  | (103) | (103)
Consumer [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period | 1,496 | 135 | 135
Charge-offs | (30) | (7) |
Recoveries | 5 | 4 |
Provision | (205) | 48 |
Balance at end of period | 1,266 | 1,220 | 1,496
Consumer [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period |  | 1,040 | 1,040
Other Commercial Loans [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period | 2,229 | 1,040 | 1,040
Charge-offs | (644) | 0 | (963)
Recoveries | 2 | 1 |
Provision | 1,093 | (1) |
Balance at end of period | 2,680 | 712 | 2,229
Other Commercial Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period |  | (328) | (328)
Other Agricultural Loans [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period | 270 | 489 | 489
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 |
Provision | (96) | (20) |
Balance at end of period | 174 | 250 | 270
Other Agricultural Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period |  | (219) | (219)
State and Political Subdivision Loans [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period | 45 | 322 | 322
Charge-offs | 0 | 0 | 0
Recoveries | 0 | 0 |
Provision | 20 | 0 |
Balance at end of period | 65 | 42 | 45
State and Political Subdivision Loans [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period |  | (280) | (280)
Unallocated [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period | 367 | 0 | 0
Charge-offs | 0 | 0 |
Recoveries | 0 | 0 |
Provision | (309) | 98 |
Balance at end of period | $ 58 | 824 | 367
Unallocated [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | ASU 2016-13 [Member] |  |  |
Financing Receivable, Allowance for Credit Losses [Roll Forward] |  |  |
Balance at beginning of period |  | $ 726 | $ 726

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