Note 5 - Intangible Assets (Details Textual) - USD ($) |
Aug. 31, 2026 |
Jul. 01, 2026 |
May 31, 2026 |
|---|---|---|---|
| Intangible Asset, Excluding Goodwill, after Accumulated Amortization | $ 42,468,000 | $ 42,468,000 | $ 42,779,000 |
| Intellectual Property, Trademarks, Know How and Brands [Member] | |||
| Intangible Assets, Net (Excluding Goodwill), Accumulated Impairment | 452,530 | ||
| Intangible Asset, Excluding Goodwill, after Accumulated Amortization | $ 15,732,000 | 42,779,000 | |
| Intangible Asset, Excluding Goodwill, Indefinite-Lived | 0 | 0 | |
| Customer Relationships and Distribution Channel [Member] | |||
| Intangible Assets, Net (Excluding Goodwill), Accumulated Impairment | 444,208 | ||
| Licenses, Permits and Applications [Member] | |||
| Intangible Assets, Net (Excluding Goodwill), Accumulated Impairment | 367,022 | ||
| Multi-period Sponsorship Rights [Member] | |||
| Intangible Asset, Excluding Goodwill, after Accumulated Amortization | $ 17,458 | $ 18,783 |