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Loans, Allowance for Credit Losses - Loans and Amortized Cost Basis of Loans Under CECL Methodology (Details) - USD ($) $ in Thousands | Jun. 30, 2023 | Mar. 31, 2023 | Dec. 31, 2022 | Jun. 30, 2022 | Mar. 31, 2022 | Dec. 31, 2021
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Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Collectively evaluated for impairment | $ 19,445 |  | $ 102 |  |  |
Individually evaluated for impairment | 2,207 |  | 18,450 |  |  |
Total Allowance for Credit Losses - Loans | 21,652 | $ 15,250 | 18,552 | $ 17,570 | $ 17,556 | $ 17,304
Collectively evaluated for impairment | 2,146,146 |  | 1,709,724 |  |  |
Individually evaluated for impairment | 16,696 |  | 11,969 |  |  |
Loans acquired with deteriorated credit quality |  |  | 3,306 |  |  |
Total Loans | 2,162,842 |  | 1,724,999 |  |  |
Residential [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Total Loans | 308,970 |  |  |  |  |
Commercial [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Total Loans | 1,080,513 |  |  |  |  |
Construction [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Total Loans | 156,927 |  |  |  |  |
Real Estate Loans [Member] | Residential [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Collectively evaluated for impairment | 2,552 |  | 4 |  |  |
Individually evaluated for impairment | 123 |  | 1,052 |  |  |
Total Allowance for Credit Losses - Loans | 2,675 | 1,195 | 1,056 | 1,015 | 1,070 | 1,147
Collectively evaluated for impairment | 356,592 |  | 209,869 |  |  |
Individually evaluated for impairment | 1,433 |  | 335 |  |  |
Loans acquired with deteriorated credit quality |  |  | 9 |  |  |
Total Loans | 358,025 |  | 210,213 |  |  |
Real Estate Loans [Member] | Commercial [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Collectively evaluated for impairment | 9,110 |  | 57 |  |  |
Individually evaluated for impairment | 164 |  | 10,063 |  |  |
Total Allowance for Credit Losses - Loans | 9,274 | 6,747 | 10,120 | 9,216 | 8,394 | 8,099
Collectively evaluated for impairment | 1,075,534 |  | 869,038 |  |  |
Individually evaluated for impairment | 4,979 |  | 5,675 |  |  |
Loans acquired with deteriorated credit quality |  |  | 1,856 |  |  |
Total Loans | 1,080,513 |  | 876,569 |  |  |
Real Estate Loans [Member] | Agricultural [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Collectively evaluated for impairment | 3,493 |  | 24 |  |  |
Individually evaluated for impairment | 86 |  | 4,565 |  |  |
Total Allowance for Credit Losses - Loans | 3,579 | 3,409 | 4,589 | 4,484 | 4,516 | 4,729
Collectively evaluated for impairment | 308,010 |  | 306,793 |  |  |
Individually evaluated for impairment | 4,292 |  | 5,380 |  |  |
Loans acquired with deteriorated credit quality |  |  | 1,441 |  |  |
Total Loans | 312,302 |  | 313,614 |  |  |
Real Estate Loans [Member] | Construction [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Collectively evaluated for impairment | 1,410 |  | 0 |  |  |
Individually evaluated for impairment | 257 |  | 801 |  |  |
Total Allowance for Credit Losses - Loans | 1,667 | 851 | 801 | 563 | 497 | 434
Collectively evaluated for impairment | 154,570 |  | 80,691 |  |  |
Individually evaluated for impairment | 2,357 |  | 0 |  |  |
Loans acquired with deteriorated credit quality |  |  | 0 |  |  |
Total Loans | 156,927 |  | 80,691 |  |  |
Consumer [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Collectively evaluated for impairment | 446 |  | 4 |  |  |
Individually evaluated for impairment | 813 |  | 131 |  |  |
Total Allowance for Credit Losses - Loans | 1,259 | 1,220 | 135 | 464 | 210 | 262
Collectively evaluated for impairment | 41,625 |  | 86,646 |  |  |
Individually evaluated for impairment | 1,076 |  | 4 |  |  |
Loans acquired with deteriorated credit quality |  |  | 0 |  |  |
Total Loans | 42,701 |  | 86,650 |  |  |
Other Commercial Loans [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Collectively evaluated for impairment | 1,713 |  | 13 |  |  |
Individually evaluated for impairment | 764 |  | 1,027 |  |  |
Total Allowance for Credit Losses - Loans | 2,477 | 712 | 1,040 | 1,173 | 1,380 | 1,023
Collectively evaluated for impairment | 118,024 |  | 63,120 |  |  |
Individually evaluated for impairment | 2,264 |  | 102 |  |  |
Loans acquired with deteriorated credit quality |  |  | 0 |  |  |
Total Loans | 120,288 |  | 63,222 |  |  |
Other Commercial Loans [Member] | Construction [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Total Loans | 120,288 |  |  |  |  |
Other Agricultural Loans [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Collectively evaluated for impairment | 268 |  | 0 |  |  |
Individually evaluated for impairment | 0 |  | 489 |  |  |
Total Allowance for Credit Losses - Loans | 268 | 250 | 489 | 446 | 551 | 558
Collectively evaluated for impairment | 30,320 |  | 34,359 |  |  |
Individually evaluated for impairment | 295 |  | 473 |  |  |
Loans acquired with deteriorated credit quality |  |  | 0 |  |  |
Total Loans | 30,615 |  | 34,832 |  |  |
State and Political Subdivision Loans [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Collectively evaluated for impairment | 52 |  | 0 |  |  |
Individually evaluated for impairment | 0 |  | 322 |  |  |
Total Allowance for Credit Losses - Loans | 52 | 42 | 322 | 323 | 285 | 281
Collectively evaluated for impairment | 61,471 |  | 59,208 |  |  |
Individually evaluated for impairment | 0 |  | 0 |  |  |
Loans acquired with deteriorated credit quality |  |  | 0 |  |  |
Total Loans | 61,471 |  | 59,208 |  |  |
Unallocated [Member] |  |  |  |  |  |
Loans And Leases Receivable, Allowance For Loan Losses [Abstract] |  |  |  |  |  |
Collectively evaluated for impairment | 401 |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Total Allowance for Credit Losses - Loans | 401 | $ 824 | $ 0 | $ (114) | $ 653 | $ 771
Collectively evaluated for impairment | 0 |  |  |  |  |
Individually evaluated for impairment | 0 |  |  |  |  |
Total Loans | $ 0 |  |  |  |  |

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