| Federal Home Loan Bank, Advances [Table Text Block] |
| | | June 30, 2025 | | | December 31, 2024 | |
| | | Contractual | | | | | | | Contractual | | | | | |
| | | Rate | | | Amount | | | Rate | | | Amount | |
| Fixed-rate advance from FHLB, due March 17, 2025 | | | — | % | | $ | — | | | | 4.27 | % | | $ | 5,000 | |
| Fixed-rate advance from FHLB, due September 17, 2025 | | | 4.20 | % | | | 5,000 | | | | 4.20 | % | | | 5,000 | |
| Fixed-rate advance from FHLB, due March 17, 2026 | | | 4.15 | % | | | 5,000 | | | | 4.15 | % | | | 5,000 | |
| Fixed-rate advance from FHLB, due September 17, 2026 | | | 4.06 | % | | | 5,000 | | | | 4.06 | % | | | 5,000 | |
| Subordinated notes, due May 15, 2031 | | | 3.75 | % | | | 18,263 | | | | 3.75 | % | | | 18,736 | |
| Line of credit, due March 28, 2025 | | | — | % | | | — | | | | 7.00 | % | | | — | |
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