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Note 3 - Investments in Securities (Tables) | 3 Months Ended
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Mar. 31, 2026
Notes Tables |
Debt Securities, Available-for-Sale [Table Text Block] |
|  |  |  |  |  | Gross |  |  | Gross |  |  | Allowance |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | for Credit |  |  | Fair |
Available-for-sale |  | Cost |  |  | Gains |  |  | Losses |  |  | Losses |  |  | Value |
|  | (in thousands) |
March 31, 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities |  | $ | 6,316 |  |  | $ | 25 |  |  | $ | (4 | ) |  | $ | — |  |  | $ | 6,337 |
Collateralized mortgage obligations |  |  | 12,271 |  |  |  | 12 |  |  |  | (48 | ) |  |  | — |  |  |  | 12,235 |
Corporate bonds |  |  | 18,233 |  |  |  | 294 |  |  |  | (33 | ) |  |  | — |  |  |  | 18,494 |
Total available-for-sale securities |  | $ | 36,820 |  |  | $ | 331 |  |  | $ | (85 | ) |  | $ | — |  |  | $ | 37,066 |
December 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities |  | $ | 6,411 |  |  | $ | 51 |  |  | $ | (3 | ) |  | $ | — |  |  | $ | 6,459 |
Collateralized mortgage obligations |  |  | 10,937 |  |  |  | 48 |  |  |  | (37 | ) |  |  | — |  |  |  | 10,948 |
Corporate bonds |  |  | 16,732 |  |  |  | 225 |  |  |  | (47 | ) |  |  | — |  |  |  | 16,910 |
Total available-for-sale securities |  | $ | 34,080 |  |  | $ | 324 |  |  | $ | (87 | ) |  | $ | — |  |  | $ | 34,317 |
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block] |
|  |  |  |  |  | Less than 12 Months |  |  | 12 Months or Longer |  |  | Total |
|  | # of |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Holdings |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
|  |  |  |  |  |  |  |  |  |  |  |  |  | (Dollars in thousands) |  |  |  |  |  |  |  |  |
March 31, 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-Sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities |  |  | 1 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,356 |  |  | $ | (4 | ) |  | $ | 1,356 |  |  | $ | (4 | )
Collateralized mortgage obligations |  |  | 6 |  |  |  | 8,174 |  |  |  | (30 | ) |  |  | 1,407 |  |  |  | (18 | ) |  |  | 9,581 |  |  |  | (48 | )
Corporate bonds |  |  | 1 |  |  |  | 2,646 |  |  |  | (33 | ) |  |  | — |  |  |  | — |  |  |  | 2,646 |  |  |  | (33 | )
Total |  |  | 8 |  |  | $ | 10,820 |  |  | $ | (63 | ) |  | $ | 2,763 |  |  | $ | (22 | ) |  | $ | 13,583 |  |  | $ | (85 | )
December 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Available-for-Sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities |  |  | 1 |  |  | $ | — |  |  | $ | — |  |  | $ | 1,362 |  |  | $ | (3 | ) |  | $ | 1,362 |  |  | $ | (3 | )
Collateralized mortgage obligations |  |  | 3 |  |  |  | 3,778 |  |  |  | (15 | ) |  |  | 1,405 |  |  |  | (22 | ) |  |  | 5,183 |  |  |  | (37 | )
Corporate bonds |  |  | 4 |  |  |  | 7,666 |  |  |  | (47 | ) |  |  | — |  |  |  | — |  |  |  | 7,666 |  |  |  | (47 | )
Total |  |  | 8 |  |  | $ | 11,444 |  |  | $ | (62 | ) |  | $ | 2,767 |  |  | $ | (25 | ) |  | $ | 14,211 |  |  | $ | (87 | )
Debt Securities, Held-to-Maturity [Table Text Block] |
|  |  |  |  |  | Gross |  |  | Gross |  |  | Allowance |  |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | for Credit |  |  | Fair |
Held-to-maturity: |  | Cost |  |  | Gains |  |  | Losses |  |  | Losses |  |  | Value |
|  | (in thousands) |
March 31, 2026 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities |  | $ | 35,492 |  |  | $ | 37 |  |  | $ | (3,465 | ) |  | $ | — |  |  | $ | 32,064 |
Corporate bonds |  |  | 16,132 |  |  |  | 200 |  |  |  | (352 | ) |  |  | — |  |  |  | 15,980 |
Total held-to-maturity securities |  | $ | 51,624 |  |  | $ | 237 |  |  | $ | (3,817 | ) |  | $ | — |  |  | $ | 48,044 |
December 31, 2025 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage-backed securities |  |  | 36,645 |  |  |  | 88 |  |  |  | (3,453 | ) |  |  | — |  |  |  | 33,280 |
Corporate bonds |  |  | 19,119 |  |  |  | 262 |  |  |  | (335 | ) |  |  | — |  |  |  | 19,046 |
Total held-to-maturity securities |  | $ | 55,764 |  |  | $ | 350 |  |  | $ | (3,788 | ) |  | $ | — |  |  | $ | 52,326 |
Investments Classified by Contractual Maturity Date [Table Text Block] |
|  | Available-for-sale |  |  | Held-to-maturity |
|  | Fair |  |  | Amortized |  |  | Fair |
|  | Value |  |  | Cost |  |  | Value |
|  | (in thousands) |
Within 1 year |  | $ | 6,955 |  |  | $ | 6,038 |  |  | $ | 6,034 |
After 1 year through 5 years |  |  | 4,189 |  |  |  | 8,017 |  |  |  | 8,052 |
After 5 years through 10 years |  |  | 12,895 |  |  |  | 11,715 |  |  |  | 10,960 |
After 10 years |  |  | 13,027 |  |  |  | 25,854 |  |  |  | 22,998 |
Total |  | $ | 37,066 |  |  | $ | 51,624 |  |  | $ | 48,044 |

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