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v3.25.1

Note 4 - Securities (Tables) | 3 Months Ended
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Mar. 31, 2025
Notes Tables |
Debt Securities, Available-for-Sale [Table Text Block] |
March 31, 2025 |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. government agencies and corporations |  | $ | 340,195 |  |  | $ | - |  |  | $ | 33,268 |  |  | $ | 306,927 |
States and political subdivisions |  |  | 177,944 |  |  |  | - |  |  |  | 30,332 |  |  |  | 147,612 |
Mortgage-backed securities |  |  | 140,597 |  |  |  | 29 |  |  |  | 4,698 |  |  |  | 135,928 |
Corporate debt securities |  |  | 6,508 |  |  |  | - |  |  |  | 722 |  |  |  | 5,786 |
Total securities available for sale |  | $ | 665,244 |  |  | $ | 29 |  |  | $ | 69,020 |  |  | $ | 596,253 |
December 31, 2024 |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
U.S. government agencies and corporations |  | $ | 351,136 |  |  | $ | - |  |  | $ | 40,012 |  |  | $ | 311,124 |
States and political subdivisions |  |  | 178,106 |  |  |  | - |  |  |  | 32,372 |  |  |  | 145,734 |
Mortgage-backed securities |  |  | 143,747 |  |  |  | 24 |  |  |  | 5,473 |  |  |  | 138,298 |
Corporate debt securities |  |  | 6,507 |  |  |  | - |  |  |  | 764 |  |  |  | 5,743 |
U.S. treasury |  |  | 1,000 |  |  |  | - |  |  |  | 1 |  |  |  | 999 |
Total securities available for sale |  | $ | 680,496 |  |  | $ | 24 |  |  | $ | 78,622 |  |  | $ | 601,898 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
March 31, 2025 |  | Amortized Cost |  |  | Fair Value |
Available for Sale: |  |  |  |  |  |
Due in one year or less |  | $ | 28,966 |  |  | $ | 28,715 |
Due after one year through five years |  |  | 220,924 |  |  |  | 208,049 |
Due after five years through ten years |  |  | 233,126 |  |  |  | 199,321 |
Due after ten years |  |  | 182,228 |  |  |  | 160,168 |
Total securities available for sale |  | $ | 665,244 |  |  | $ | 596,253 |
Gain (Loss) on Securities [Table Text Block] |
March 31, 2025 |  | Less Than 12 Months |  |  | 12 Months or More |
|  | Fair Value |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Gross Unrealized Losses |
U.S. government agencies and corporations |  | $ | - |  |  | $ | - |  |  | $ | 306,927 |  |  | $ | 33,268 |
State and political subdivisions |  |  | - |  |  |  | - |  |  |  | 147,612 |  |  |  | 30,332 |
Mortgage-backed securities |  |  | 1,386 |  |  |  | 18 |  |  |  | 109,515 |  |  |  | 4,680 |
Corporate debt securities |  |  | - |  |  |  | - |  |  |  | 5,786 |  |  |  | 722 |
Total temporarily impaired securities |  | $ | 1,386 |  |  | $ | 18 |  |  | $ | 569,840 |  |  | $ | 69,002 |
December 31, 2024 |  | Less Than 12 Months |  |  | 12 Months or More |
|  | Fair Value |  |  | Gross Unrealized Losses |  |  | Fair Value |  |  | Gross Unrealized Losses |
U.S. government agencies and corporations |  | $ | - |  |  | $ | - |  |  | $ | 311,124 |  |  | $ | 40,012 |
State and political subdivisions |  |  | 885 |  |  |  | 118 |  |  |  | 144,849 |  |  |  | 32,254 |
Mortgage-backed securities |  |  | 5,336 |  |  |  | 28 |  |  |  | 115,011 |  |  |  | 5,445 |
Corporate debt securities |  |  | - |  |  |  | - |  |  |  | 5,743 |  |  |  | 764 |
U.S. treasury |  |  | - |  |  |  | - |  |  |  | 999 |  |  |  | 1 |
Total temporarily impaired securities |  | $ | 6,221 |  |  | $ | 146 |  |  | $ | 577,726 |  |  | $ | 78,476 |

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