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Note 4 - Loans and the Allowance for Credit Losses - Aging Analysis of the Loan Portfolio (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Loans, Total | $ 1,499,979 | $ 1,018,571
90 Days and Still Accruing | 0 | 0
Nonaccrual | 15,029 | 4,105
Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans, Total | 10,029 | 8,521
Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans, Total | 964 | 1,372
Financial Asset, Past Due [Member] |  |
Loans, Total | 26,022 | 13,998
Financial Asset, Not Past Due [Member] |  |
Loans, Total | 1,473,957 | 1,004,573
Commercial Portfolio Segment [Member] | Commercial Loans [Member] |  |
Loans, Total | 162,497 | 78,194
90 Days and Still Accruing | 0 | 0
Nonaccrual | 508 | 355
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans, Total | 513 | 1,074
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans, Total | 188 | 533
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Financial Asset, Past Due [Member] |  |
Loans, Total | 1,209 | 1,962
Commercial Portfolio Segment [Member] | Commercial Loans [Member] | Financial Asset, Not Past Due [Member] |  |
Loans, Total | 161,288 | 76,232
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] |  |
Loans, Total | 154,366 | 119,110
90 Days and Still Accruing | 0 | 0
Nonaccrual | 10,540 | 567
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans, Total | 0 | 273
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans, Total | 341 | 0
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Financial Asset, Past Due [Member] |  |
Loans, Total | 10,881 | 840
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | Financial Asset, Not Past Due [Member] |  |
Loans, Total | 143,485 | 118,270
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] |  |
Loans, Total | 981,685 | 646,951
90 Days and Still Accruing | 0 | 0
Nonaccrual | 1,798 | 1,579
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans, Total | 6,038 | 1,954
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans, Total | 0 | 82
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Financial Asset, Past Due [Member] |  |
Loans, Total | 7,836 | 3,615
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] | Financial Asset, Not Past Due [Member] |  |
Loans, Total | 973,849 | 643,336
Commercial Portfolio Segment [Member] | Construction Loans [Member] |  |
Loans, Total | 49,055 | 53,285
90 Days and Still Accruing | 0 | 0
Nonaccrual | 0 | 0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans, Total | 909 | 2,133
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans, Total |  | 0
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, Past Due [Member] |  |
Loans, Total | 909 | 2,133
Commercial Portfolio Segment [Member] | Construction Loans [Member] | Financial Asset, Not Past Due [Member] |  |
Loans, Total | 48,146 | 51,152
Residential Portfolio Segment [Member] | Real Estate Loan [Member] |  |
Loans, Total | 33,688 | 11,568
90 Days and Still Accruing | 0 | 0
Nonaccrual | 258 | 83
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans, Total | 0 | 348
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans, Total | 0 | 319
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Financial Asset, Past Due [Member] |  |
Loans, Total | 258 | 750
Residential Portfolio Segment [Member] | Real Estate Loan [Member] | Financial Asset, Not Past Due [Member] |  |
Loans, Total | 33,430 | 10,818
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] |  |
Loans, Total | 54,214 | 38,755
90 Days and Still Accruing | 0 | 0
Nonaccrual | 1,090 | 650
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans, Total | 1,284 | 1,416
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans, Total | 321 | 189
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Financial Asset, Past Due [Member] |  |
Loans, Total | 2,695 | 2,255
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member] | Financial Asset, Not Past Due [Member] |  |
Loans, Total | 51,519 | 36,500
Consumer Portfolio Segment [Member] |  |
Loans, Total | 64,474 | 70,708
Consumer Portfolio Segment [Member] | Automobile Loan [Member] |  |
Loans, Total | 45,654 | 65,584
90 Days and Still Accruing | 0 | 0
Nonaccrual | 823 | 792
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans, Total | 1,216 | 1,251
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans, Total | 70 | 242
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Financial Asset, Past Due [Member] |  |
Loans, Total | 2,109 | 2,285
Consumer Portfolio Segment [Member] | Automobile Loan [Member] | Financial Asset, Not Past Due [Member] |  |
Loans, Total | 43,545 | 63,299
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |
Loans, Total | 18,820 | 5,124
90 Days and Still Accruing | 0 | 0
Nonaccrual | 12 | 79
Consumer Portfolio Segment [Member] | Other Loans [Member] | Financial Asset, 30 to 59 Days Past Due [Member] |  |
Loans, Total | 69 | 72
Consumer Portfolio Segment [Member] | Other Loans [Member] | Financial Asset, 60 to 89 Days Past Due [Member] |  |
Loans, Total | 44 | 7
Consumer Portfolio Segment [Member] | Other Loans [Member] | Financial Asset, Past Due [Member] |  |
Loans, Total | 125 | 158
Consumer Portfolio Segment [Member] | Other Loans [Member] | Financial Asset, Not Past Due [Member] |  |
Loans, Total | $ 18,695 | $ 4,966

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