Note 1 - Summary of Significant Accounting Policies - Summary of Useful Life of Property Plant and Equipment (Details) |
May 31, 2026 |
May 31, 2025 |
|---|---|---|
| Plant Building [Member] | ||
| Property, Plant, And Equipment, Useful Life (Year) | 39 years | |
| Machinery and Equipment [Member] | Minimum [Member] | ||
| Property, Plant, And Equipment, Useful Life (Year) | 5 years | |
| Machinery and Equipment [Member] | Maximum [Member] | ||
| Property, Plant, And Equipment, Useful Life (Year) | 12 years | |
| Leasehold Improvements [Member] | Minimum [Member] | ||
| Property, Plant, And Equipment, Useful Life (Year) | 5 years | |
| Leasehold Improvements [Member] | Maximum [Member] | ||
| Property, Plant, And Equipment, Useful Life (Year) | 7 years | |
| Furniture and Fixtures [Member] | Minimum [Member] | ||
| Property, Plant, And Equipment, Useful Life (Year) | 3 years | |
| Furniture and Fixtures [Member] | Maximum [Member] | ||
| Property, Plant, And Equipment, Useful Life (Year) | 5 years |