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Note 6 - Investment and Equity Securities (Tables) | 6 Months Ended
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Jun. 30, 2025
Notes Tables |
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
|  | June 30, 2025 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost (a) |  |  | Gains |  |  | Losses |  |  | Value |
Subordinated debt |  | $ | 34,000 |  |  | $ | 75 |  |  | $ | (1,441 | ) |  | $ | 32,634 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 147,502 |  |  |  | 4 |  |  |  | (27,024 | ) |  |  | 120,482 |
Mortgage-backed securities in government-sponsored entities |  |  | 8,648 |  |  |  | 21 |  |  |  | (669 | ) |  |  | 8,000 |
Total |  | $ | 190,150 |  |  | $ | 100 |  |  | $ | (29,134 | ) |  | $ | 161,116 |
|  | December 31, 2024 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost (a) |  |  | Gains |  |  | Losses |  |  | Value |
Subordinated debt |  | $ | 34,300 |  |  | $ | 67 |  |  | $ | (1,898 | ) |  | $ | 32,469 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 147,767 |  |  |  | 4 |  |  |  | (22,805 | ) |  |  | 124,966 |
Mortgage-backed securities in government-sponsored entities |  |  | 9,144 |  |  |  | 1 |  |  |  | (778 | ) |  |  | 8,367 |
Total |  | $ | 191,211 |  |  | $ | 72 |  |  | $ | (25,481 | ) |  | $ | 165,802 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Amortized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost |  |  | Value |
Due in one year or less |  | $ | 590 |  |  | $ | 590 |
Due after one year through five years |  |  | 12,091 |  |  |  | 11,852 |
Due after five years through ten years |  |  | 52,878 |  |  |  | 50,268 |
Due after ten years |  |  | 124,591 |  |  |  | 98,406 |
Total |  | $ | 190,150 |  |  | $ | 161,116 |
Gain (Loss) on Securities [Table Text Block] |
|  | June 30, 2025 |
|  | 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 |  | $ | 3,463 |  |  | $ | (37 | ) |  | $ | 26,596 |  |  | $ | (1,404 | ) |  | $ | 30,059 |  |  | $ | (1,441 | )
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 12,246 |  |  |  | (649 | ) |  |  | 102,212 |  |  |  | (26,375 | ) |  |  | 114,458 |  |  |  | (27,024 | )
Mortgage-backed securities in government-sponsored entities |  |  | 1,358 |  |  |  | (42 | ) |  |  | 4,810 |  |  |  | (627 | ) |  |  | 6,168 |  |  |  | (669 | )
Total |  | $ | 17,067 |  |  | $ | (728 | ) |  | $ | 133,618 |  |  | $ | (28,406 | ) |  | $ | 150,685 |  |  | $ | (29,134 | )
|  | December 31, 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 |  | $ | 10,632 |  |  | $ | (368 | ) |  | $ | 20,770 |  |  | $ | (1,530 | ) |  | $ | 31,402 |  |  | $ | (1,898 | )
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 15,456 |  |  |  | (487 | ) |  |  | 102,484 |  |  |  | (22,318 | ) |  |  | 117,940 |  |  |  | (22,805 | )
Mortgage-backed securities in government-sponsored entities |  |  | 1,986 |  |  |  | (49 | ) |  |  | 5,118 |  |  |  | (729 | ) |  |  | 7,104 |  |  |  | (778 | )
Total |  | $ | 28,074 |  |  | $ | (904 | ) |  | $ | 128,372 |  |  | $ | (24,577 | ) |  | $ | 156,446 |  |  | $ | (25,481 | )

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