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Loans, Allowance for Credit Losses - Loans and Amortized Cost Basis of Loans Under CECL Methodology (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Dec. 31, 2023 | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | --- | --- | ---
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Collectively evaluated for impairment | $ 19,611 | $ 19,181 |  |
Individually evaluated for impairment | 1,987 | 1,972 |  |
Total Allowance for Credit Losses - Loans for impairment | 21,598 | 21,153 | $ 15,250 | $ 18,552
Collectively evaluated for impairment | 2,226,157 | 2,235,955 |  |
Individually evaluated for impairment | 13,502 | 12,881 |  |
Total Loans | 2,239,659 | 2,248,836 |  |
Residential [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Total Loans | 308,589 | 310,199 |  |
Commercial [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Total Loans | 1,115,900 | 1,092,887 |  |
Construction [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Total Loans | 184,506 | 195,826 |  |
Real Estate Loans [Member] | Residential [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Collectively evaluated for impairment | 2,291 | 2,285 |  |
Individually evaluated for impairment | 56 | 69 |  |
Total Allowance for Credit Losses - Loans for impairment | 2,347 | 2,354 | 1,195 | 1,056
Collectively evaluated for impairment | 356,185 | 358,358 |  |
Individually evaluated for impairment | 1,594 | 1,632 |  |
Total Loans | 357,779 | 359,990 |  |
Real Estate Loans [Member] | Commercial [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Collectively evaluated for impairment | 9,600 | 9,033 |  |
Individually evaluated for impairment | 141 | 145 |  |
Total Allowance for Credit Losses - Loans for impairment | 9,741 | 9,178 | 6,747 | 10,120
Collectively evaluated for impairment | 1,113,415 | 1,090,217 |  |
Individually evaluated for impairment | 2,485 | 2,670 |  |
Total Loans | 1,115,900 | 1,092,887 |  |
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Collectively evaluated for impairment | 3,655 | 3,247 |  |
Individually evaluated for impairment | 17 | 17 |  |
Total Allowance for Credit Losses - Loans for impairment | 3,672 | 3,264 | 3,409 | 4,589
Collectively evaluated for impairment | 315,805 | 311,500 |  |
Individually evaluated for impairment | 2,608 | 3,302 |  |
Total Loans | 318,413 | 314,802 |  |
Real Estate Loans [Member] | Construction [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Collectively evaluated for impairment | 1,595 | 1,664 |  |
Individually evaluated for impairment | 0 | 286 |  |
Total Allowance for Credit Losses - Loans for impairment | 1,595 | 1,950 | 851 | 801
Collectively evaluated for impairment | 180,223 | 193,469 |  |
Individually evaluated for impairment | 4,283 | 2,357 |  |
Total Loans | 184,506 | 195,826 |  |
Consumer [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Collectively evaluated for impairment | 273 | 557 |  |
Individually evaluated for impairment | 993 | 939 |  |
Total Allowance for Credit Losses - Loans for impairment | 1,266 | 1,496 | 1,220 | 135
Collectively evaluated for impairment | 52,027 | 60,377 |  |
Individually evaluated for impairment | 1,074 | 939 |  |
Total Loans | 53,101 | 61,316 |  |
Other Commercial Loans [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Collectively evaluated for impairment | 1,900 | 1,713 |  |
Individually evaluated for impairment | 780 | 516 |  |
Total Allowance for Credit Losses - Loans for impairment | 2,680 | 2,229 | 712 | 1,040
Collectively evaluated for impairment | 128,410 | 134,472 |  |
Individually evaluated for impairment | 1,028 | 1,696 |  |
Total Loans | 129,438 | 136,168 |  |
Other Agricultural Loans [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Collectively evaluated for impairment | 174 | 270 |  |
Individually evaluated for impairment | 0 | 0 |  |
Total Allowance for Credit Losses - Loans for impairment | 174 | 270 | 250 | 489
Collectively evaluated for impairment | 23,915 | 30,388 |  |
Individually evaluated for impairment | 430 | 285 |  |
Total Loans | 24,345 | 30,673 |  |
State and Political Subdivision Loans [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Collectively evaluated for impairment | 65 | 45 |  |
Individually evaluated for impairment | 0 | 0 |  |
Total Allowance for Credit Losses - Loans for impairment | 65 | 45 | 42 | 322
Collectively evaluated for impairment | 56,177 | 57,174 |  |
Individually evaluated for impairment | 0 | 0 |  |
Total Loans | 56,177 | 57,174 |  |
Unallocated [Member] |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |
Collectively evaluated for impairment | 58 | 367 |  |
Individually evaluated for impairment | 0 | 0 |  |
Total Allowance for Credit Losses - Loans for impairment | 58 | 367 | $ 824 | $ 0
Collectively evaluated for impairment | 0 | 0 |  |
Individually evaluated for impairment | 0 | 0 |  |
Total Loans | $ 0 | $ 0 |  |

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