Note 2 - Investment Securities (Tables)
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6 Months Ended |
Jun. 30, 2026 |
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| Notes Tables |
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| Debt Securities, Available-for-Sale [Table Text Block] |
| | | June 30, 2026 | |
| (Dollars in thousands) | | Amortized Cost | | | Gross Unrealized Gains | | | Gross Unrealized Losses | | | Fair Value | |
| Collateralized Mortgage Backed | | $ | 18,210 | | | $ | 3 | | | $ | (3,079 | ) | | $ | 15,134 | |
| Subordinated Debt | | | 11,880 | | | | 27 | | | | (498 | ) | | | 11,409 | |
| Preferred Stock | | | 475 | | | | — | | | | — | | | | 475 | |
| Municipal Securities: | | | | | | | | | | | | | | | | |
| Taxable | | | 9,584 | | | | — | | | | (1,901 | ) | | | 7,683 | |
| Tax-exempt | | | 22,312 | | | | 15 | | | | (1,725 | ) | | | 20,602 | |
| U.S. Governmental Agencies | | | 1,820 | | | | 7 | | | | (16 | ) | | | 1,811 | |
| Total | | $ | 64,281 | | | $ | 52 | | | $ | (7,219 | ) | | $ | 57,114 | |
| | | December 31, 2025 | |
| (Dollars in thousands) | | Amortized Cost | | | Gross Unrealized Gains | | | Gross Unrealized Losses | | | Fair Value | |
| Collateralized Mortgage Backed | | $ | 19,027 | | | $ | 7 | | | $ | (2,981 | ) | | $ | 16,053 | |
| Subordinated Debt | | | 11,872 | | | | 2 | | | | (668 | ) | | | 11,206 | |
| Preferred Stock | | | 468 | | | | — | | | | — | | | | 468 | |
| Municipal Securities: | | | | | | | | | | | | | | | | |
| Taxable | | | 9,597 | | | | — | | | | (1,908 | ) | | | 7,689 | |
| Tax-exempt | | | 22,383 | | | | 25 | | | | (1,957 | ) | | | 20,451 | |
| U.S. Governmental Agencies | | | 2,098 | | | | 6 | | | | (17 | ) | | | 2,087 | |
| Total | | $ | 65,445 | | | $ | 40 | | | $ | (7,531 | ) | | $ | 57,954 | |
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| Debt Securities, Held-to-Maturity [Table Text Block] |
| | | June 30, 2026 | |
| (Dollars in thousands) | | Amortized Cost | | | Gross Unrealized Gains | | | Gross Unrealized Losses | | | Fair Value | |
| Municipal Securities: | | | | | | | | | | | | | | | | |
| Tax-exempt | | $ | 13,785 | | | $ | 27 | | | $ | (46 | ) | | $ | 13,766 | |
| Total | | $ | 13,785 | | | $ | 27 | | | $ | (46 | ) | | $ | 13,766 | |
| | | December 31, 2025 | |
| (Dollars in thousands) | | Amortized Cost | | | Gross Unrealized Gains | | | Gross Unrealized Losses | | | Fair Value | |
| Municipal Securities: | | | | | | | | | | | | | | | | |
| Tax-exempt | | $ | 13,798 | | | $ | 32 | | | $ | (76 | ) | | $ | 13,754 | |
| Total | | $ | 13,798 | | | $ | 32 | | | $ | (76 | ) | | $ | 13,754 | |
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| Debt Securities, Held-to-Maturity, Credit Quality Indicator [Table Text Block] |
| (Dollars in thousands) | | Municipal Securities | | | Total HTM Securities | |
| June 30, 2026 | | | | | | | | |
| Credit Rating: | | | | | | | | |
| AAA/AA/A | | $ | 13,785 | | | $ | 13,785 | |
| Total | | $ | 13,785 | | | $ | 13,785 | |
| December 31, 2025 | | | | | | | | |
| Credit Rating: | | | | | | | | |
| AAA/AA/A | | $ | 13,798 | | | $ | 13,798 | |
| Total | | $ | 13,798 | | | $ | 13,798 | |
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| Investments Classified by Contractual Maturity Date [Table Text Block] |
| | | June 30, 2026 | |
| | | Available-for-Sale | | | Held-to-Maturity | |
| (Dollars in thousands) | | Amortized Cost | | | Fair Value | | | Amortized Cost | | | Fair Value | |
| Due in one year or less | | $ | — | | | $ | — | | | $ | 1,150 | | | $ | 1,150 | |
| Due from one to five years | | | 3,470 | | | | 3,412 | | | | 2,390 | | | | 2,387 | |
| Due from after five to ten years | | | 17,410 | | | | 16,578 | | | | 3,598 | | | | 3,621 | |
| Due after ten years | | | 43,401 | | | | 37,124 | | | | 6,647 | | | | 6,608 | |
| Total | | $ | 64,281 | | | $ | 57,114 | | | $ | 13,785 | | | $ | 13,766 | |
| | | December 31, 2025 | |
| | | Available-for-Sale | | | Held-to-Maturity | |
| (Dollars in thousands) | | Amortized Cost | | | Fair Value | | | Amortized Cost | | | Fair Value | |
| Due in one year or less | | $ | — | | | $ | — | | | $ | 399 | | | $ | 399 | |
| Due from one to five years | | | 1,470 | | | | 1,395 | | | | 3,140 | | | | 3,134 | |
| Due from after five to ten years | | | 17,645 | | | | 16,721 | | | | 3,606 | | | | 3,633 | |
| Due after ten years | | | 46,330 | | | | 39,838 | | | | 6,653 | | | | 6,588 | |
| Total | | $ | 65,445 | | | $ | 57,954 | | | $ | 13,798 | | | $ | 13,754 | |
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| Gain (Loss) on Securities [Table Text Block] |
| | | June 30, 2026 | |
| | | Less than 12 Months | | | 12 Months or Longer | | | Total | |
| (Dollars in thousands) | | Fair Value | | | Unrealized Loss | | | Fair Value | | | Unrealized Loss | | | Fair Value | | | Unrealized Loss | |
| Available-for-sale: | | | | | | | | | | | | | | | | | | | | | | | | |
| Collateralized Mortgage Backed | | $ | — | | | $ | — | | | $ | 14,950 | | | $ | (3,079 | ) | | $ | 14,950 | | | $ | (3,079 | ) |
| Subordinated Debt | | | 1,159 | | | | (29 | ) | | | 7,251 | | | | (469 | ) | | | 8,410 | | | | (498 | ) |
| Municipal securities: | | | | | | | | | | | | | | | | | | | | | | | | |
| Taxable | | | — | | | | — | | | | 7,683 | | | | (1,901 | ) | | | 7,683 | | | | (1,901 | ) |
| Tax-exempt | | | 4,260 | | | | (45 | ) | | | 12,566 | | | | (1,680 | ) | | | 16,826 | | | | (1,725 | ) |
| U.S. Governmental Agencies | | | — | | | | — | | | | 504 | | | | (16 | ) | | | 504 | | | | (16 | ) |
| Total | | $ | 5,419 | | | $ | (74 | ) | | $ | 42,954 | | | $ | (7,145 | ) | | $ | 48,373 | | | $ | (7,219 | ) |
| | | December 31, 2025 | |
| | | Less than 12 Months | | | 12 Months or Longer | | | Total | |
| (Dollars in thousands) | | Fair Value | | | Unrealized Loss | | | Fair Value | | | Unrealized Loss | | | Fair Value | | | Unrealized Loss | |
| Available-for-sale: | | | | | | | | | | | | | | | | | | | | | | | | |
| Collateralized Mortgage Backed | | $ | — | | | $ | — | | | $ | 15,807 | | | $ | (2,981 | ) | | $ | 15,807 | | | $ | (2,981 | ) |
| Subordinated Debt | | | 1,857 | | | | (45 | ) | | | 7,347 | | | | (623 | ) | | | 9,204 | | | | (668 | ) |
| Municipal Securities: | | | | | | | | | | | | | | | | | | | | | | | | |
| Taxable | | | — | | | | — | | | | 7,689 | | | | (1,908 | ) | | | 7,689 | | | | (1,908 | ) |
| Tax-exempt | | | — | | | | — | | | | 14,796 | | | | (1,957 | ) | | | 14,796 | | | | (1,957 | ) |
| U.S. Government Agencies | | | — | | | | — | | | | 579 | | | | (17 | ) | | | 579 | | | | (17 | ) |
| Total | | $ | 1,857 | | | $ | (45 | ) | | $ | 46,218 | | | $ | (7,486 | ) | | $ | 48,075 | | | $ | (7,531 | ) |
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