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v3.23.1

Note 3 - Securities (Tables) | 3 Months Ended
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Mar. 31, 2023
Notes Tables |
Debt Securities, Available-for-Sale [Table Text Block] |
|  | March 31, 2023 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Allowance for Credit Losses |  |  | Fair Value |
Available for Sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasuries |  | $ | 993 |  |  | $ | - |  |  | $ | 46 |  |  | $ | - |  |  | $ | 947 |
U.S. Government agencies and corporations |  |  | 382,592 |  |  |  | - |  |  |  | 48,648 |  |  |  | - |  |  |  | 333,944 |
States and political subdivisions |  |  | 181,214 |  |  |  | 3 |  |  |  | 31,255 |  |  |  | - |  |  |  | 149,962 |
Mortgage-backed securities |  |  | 167,964 |  |  |  | - |  |  |  | 7,511 |  |  |  | - |  |  |  | 160,453 |
Corporate debt securities |  |  | 6,502 |  |  |  | - |  |  |  | 761 |  |  |  | - |  |  |  | 5,741 |
Total securities available for sale |  | $ | 739,265 |  |  | $ | 3 |  |  | $ | 88,221 |  |  | $ | - |  |  | $ | 651,047 |
|  | December 31, 2022 |
|  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Fair Value |
Available for Sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasuries |  | $ | 992 |  |  | $ | - |  |  | $ | 56 |  |  | $ | 936 |
U.S. Government agencies and corporations |  |  | 391,538 |  |  |  | 39 |  |  |  | 55,002 |  |  |  | 336,575 |
States and political subdivisions |  |  | 190,192 |  |  |  | 26 |  |  |  | 38,018 |  |  |  | 152,200 |
Mortgage-backed securities |  |  | 170,694 |  |  |  | 22 |  |  |  | 9,239 |  |  |  | 161,477 |
Corporate debt securities |  |  | 6,501 |  |  |  | - |  |  |  | 837 |  |  |  | 5,664 |
Total securities available for sale |  | $ | 759,917 |  |  | $ | 87 |  |  | $ | 103,152 |  |  | $ | 656,852 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | March 31, 2023 |
|  | Amortized Cost |  |  | Fair Value |
Available for Sale: |  |  |  |  |  |  |  |
Due in one year or less |  | $ | 3,229 |  |  | $ | 3,172 |
Due after one year through five years |  |  | 148,141 |  |  |  | 138,200 |
Due after five years through ten years |  |  | 316,859 |  |  |  | 273,664 |
Due after ten years |  |  | 271,036 |  |  |  | 236,011 |
Total securities available for sale |  | $ | 739,265 |  |  | $ | 651,047 |
Schedule of Temporary Impairment Losses, Investments [Table Text Block] |
|  | March 31, 2023 |
|  | Less Than 12 Months |  |  | 12 Months or More |
|  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
U.S. Treasuries |  | $ | - |  |  | $ | - |  |  | $ | 947 |  |  | $ | 46 |
U.S. Government agencies and corporations |  |  | 50,869 |  |  |  | 2,032 |  |  |  | 283,074 |  |  |  | 46,616 |
States and political subdivisions |  |  | 9,432 |  |  |  | 1,214 |  |  |  | 139,371 |  |  |  | 30,041 |
Mortgage-backed securities |  |  | 18,576 |  |  |  | 242 |  |  |  | 141,868 |  |  |  | 7,269 |
Corporate debt securities |  |  | 873 |  |  |  | 127 |  |  |  | 4,868 |  |  |  | 634 |
Total available for sale securities |  | $ | 79,750 |  |  | $ | 3,615 |  |  | $ | 570,128 |  |  | $ | 84,606 |
|  | December 31, 2022 |
|  | Less Than 12 Months |  |  | 12 Months or More |
|  | Fair Value |  |  | Unrealized Loss |  |  | Fair Value |  |  | Unrealized Loss |
U.S. Treasuries |  | $ | 936 |  |  | $ | 56 |  |  | $ | - |  |  | $ | - |
U.S. Government agencies and corporations |  |  | 144,574 |  |  |  | 12,699 |  |  |  | 190,950 |  |  |  | 42,303 |
States and political subdivisions |  |  | 94,657 |  |  |  | 18,373 |  |  |  | 52,134 |  |  |  | 19,645 |
Mortgage-backed securities |  |  | 144,198 |  |  |  | 7,326 |  |  |  | 15,165 |  |  |  | 1,913 |
Corporate debt securities |  |  | 4,843 |  |  |  | 655 |  |  |  | 821 |  |  |  | 182 |
Total temporarily impaired securities |  | $ | 389,208 |  |  | $ | 39,109 |  |  | $ | 259,070 |  |  | $ | 64,043 |

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