Summary of Significant Accounting Policies, Office Properties and Equipment (Details) |
Dec. 31, 2025 |
|---|---|
| Office Buildings and Improvements [Member] | Minimum [Member] | |
| Office Properties and Equipment [Abstract] | |
| Useful life | 10 years |
| Office Buildings and Improvements [Member] | Maximum [Member] | |
| Office Properties and Equipment [Abstract] | |
| Useful life | 40 years |
| Furniture, Fixtures and Equipment [Member] | Minimum [Member] | |
| Office Properties and Equipment [Abstract] | |
| Useful life | 3 years |
| Furniture, Fixtures and Equipment [Member] | Maximum [Member] | |
| Office Properties and Equipment [Abstract] | |
| Useful life | 10 years |