Note 2 - Significant Accounting Policies - Estimated Useful Lives of Assets (Details) |
Mar. 31, 2026 |
|---|---|
| Building and Building Improvements [Member] | Minimum [Member] | |
| Useful life (Year) | 10 years |
| Building and Building Improvements [Member] | Maximum [Member] | |
| Useful life (Year) | 44 years |
| Furniture, Fixtures and Equipment [Member] | Minimum [Member] | |
| Useful life (Year) | 3 years |
| Furniture, Fixtures and Equipment [Member] | Maximum [Member] | |
| Useful life (Year) | 15 years |