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Note 6 - Investment and Equity Securities (Tables) | 3 Months Ended
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Mar. 31, 2025
Notes Tables |
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block] |
|  | March 31, 2025 |
|  |  |  |  |  | Gross |  |  | Gross |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
(Dollar amounts in thousands) |  | Cost (a) |  |  | Gains |  |  | Losses |  |  | Value |
Subordinated debt |  | $ | 34,300 |  |  | $ | 86 |  |  | $ | (1,557 | ) |  | $ | 32,829 |
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 147,634 |  |  |  | 4 |  |  |  | (23,787 | ) |  |  | 123,851 |
Mortgage-backed securities in government-sponsored entities |  |  | 8,953 |  |  |  | 25 |  |  |  | (644 | ) |  |  | 8,334 |
Total |  | $ | 190,887 |  |  | $ | 115 |  |  | $ | (25,988 | ) |  | $ | 165,014 |
|  | 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 |  |  | $ | 591 |
Due after one year through five years |  |  | 6,816 |  |  |  | 6,664 |
Due after five years through ten years |  |  | 57,517 |  |  |  | 54,754 |
Due after ten years |  |  | 125,964 |  |  |  | 103,005 |
Total |  | $ | 190,887 |  |  | $ | 165,014 |
Gain (Loss) on Securities [Table Text Block] |
|  | March 31, 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 |  | $ | 2,660 |  |  | $ | (90 | ) |  | $ | 27,333 |  |  | $ | (1,467 | ) |  | $ | 29,993 |  |  | $ | (1,557 | )
Obligations of states and political subdivisions: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 11,486 |  |  |  | (414 | ) |  |  | 105,341 |  |  |  | (23,373 | ) |  |  | 116,827 |  |  |  | (23,787 | )
Mortgage-backed securities in government-sponsored entities |  |  | 1,400 |  |  |  | (24 | ) |  |  | 5,082 |  |  |  | (620 | ) |  |  | 6,482 |  |  |  | (644 | )
Total |  | $ | 15,546 |  |  | $ | (528 | ) |  | $ | 137,756 |  |  | $ | (25,460 | ) |  | $ | 153,302 |  |  | $ | (25,988 | )
|  | 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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