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Note 6 - Investments and Equity Securities (Tables) | 9 Months Ended
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Sep. 30, 2024
Notes Tables |
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
|  | September 30, 2024 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost (a) |  |  | Gains |  |  | Losses |  |  | Value |
Subordinated debt |  | $ | 34,300 |  |  | $ | 116 |  |  | $ | (1,883 | ) |  | $ | 32,533 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 148,122 |  |  |  | 49 |  |  |  | (18,704 | ) |  |  | 129,467 |
Mortgage-backed securities in government-sponsored entities |  |  | 8,330 |  |  |  | 60 |  |  |  | (495 | ) |  |  | 7,895 |
Total |  | $ | 190,752 |  |  | $ | 225 |  |  | $ | (21,082 | ) |  | $ | 169,895 |
|  | December 31, 2023 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost (a) |  |  | Gains |  |  | Losses |  |  | Value |
Subordinated debt |  | $ | 34,300 |  |  | $ | 70 |  |  | $ | (2,451 | ) |  | $ | 31,919 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 149,881 |  |  |  | 153 |  |  |  | (17,492 | ) |  |  | 132,542 |
Mortgage-backed securities in government-sponsored entities |  |  | 6,965 |  |  |  | - |  |  |  | (647 | ) |  |  | 6,318 |
Total |  | $ | 191,146 |  |  | $ | 223 |  |  | $ | (20,590 | ) |  | $ | 170,779 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Amortized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost |  |  | Value |
Due in one year or less |  | $ | 521 |  |  | $ | 522 |
Due after one year through five years |  |  | 5,942 |  |  |  | 5,786 |
Due after five years through ten years |  |  | 57,041 |  |  |  | 54,581 |
Due after ten years |  |  | 127,248 |  |  |  | 109,006 |
Total |  | $ | 190,752 |  |  | $ | 169,895 |
Gain (Loss) on Securities [Table Text Block] |
|  | September 30, 2024 |
|  | Less than Twelve Months |  |  | Twelve Months or Greater |  |  | Total |
|  |  |  |  |  | Gross |  |  |  |  |  |  | Gross |  |  |  |  |  |  | Gross |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
(Dollar amounts in thousands) |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
Subordinated debt |  | $ | 2,812 |  |  | $ | (238 | ) |  | $ | 27,105 |  |  | $ | (1,645 | ) |  | $ | 29,917 |  |  | $ | (1,883 | )
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 6,381 |  |  |  | (154 | ) |  |  | 105,040 |  |  |  | (18,550 | ) |  |  | 111,421 |  |  |  | (18,704 | )
Mortgage-backed securities in government-sponsored entities |  |  | - |  |  |  | - |  |  |  | 5,536 |  |  |  | (495 | ) |  |  | 5,536 |  |  |  | (495 | )
Total |  | $ | 9,193 |  |  | $ | (392 | ) |  | $ | 137,681 |  |  | $ | (20,690 | ) |  | $ | 146,874 |  |  | $ | (21,082 | )
|  | December 31, 2023 |
|  | Less than Twelve Months |  |  | Twelve Months or Greater |  |  | Total |
|  |  |  |  |  | Gross |  |  |  |  |  |  | Gross |  |  |  |  |  |  | Gross |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
(Dollar amounts in thousands) |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
Subordinated debt |  | $ | 994 |  |  | $ | (6 | ) |  | $ | 29,356 |  |  | $ | (2,445 | ) |  | $ | 30,350 |  |  | $ | (2,451 | )
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 1,386 |  |  |  | (10 | ) |  |  | 106,078 |  |  |  | (17,482 | ) |  |  | 107,464 |  |  |  | (17,492 | )
Mortgage-backed securities in government-sponsored entities |  |  | 195 |  |  |  | (1 | ) |  |  | 6,122 |  |  |  | (646 | ) |  |  | 6,317 |  |  |  | (647 | )
Total |  | $ | 2,575 |  |  | $ | (17 | ) |  | $ | 141,556 |  |  | $ | (20,573 | ) |  | $ | 144,131 |  |  | $ | (20,590 | )

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