Note 5 - Intangible Assets - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands |
Feb. 28, 2026 |
May 31, 2025 |
|---|---|---|
| Cost | $ 37,625 | $ 1,628,441 |
| Accumulated amortization | (14,282) | (343,258) |
| Total | 23,343 | 21,423 |
| Accumulated impairment losses | (1,263,760) | |
| Customer Relationships and Distribution Channel [Member] | ||
| Cost | 2,409 | 610,240 |
| Accumulated amortization | (161) | (166,032) |
| Total | 2,248 | 0 |
| Accumulated impairment losses | (444,208) | (444,208) |
| Licenses, Permits and Applications [Member] | ||
| Cost | 18,432 | 387,238 |
| Accumulated amortization | (9,113) | (9,693) |
| Total | 9,319 | 10,523 |
| Accumulated impairment losses | (367,022) | (367,022) |
| Noncompete Agreements [Member] | ||
| Cost | 12,449 | |
| Accumulated amortization | (12,449) | |
| Total | 0 | |
| Accumulated impairment losses | 0 | |
| Intellectual Property, Trademarks, Know How and Brands [Member] | ||
| Cost | 16,784 | 618,514 |
| Accumulated amortization | (5,008) | (155,084) |
| Total | 11,776 | 10,900 |
| Accumulated impairment losses | $ (452,530) | $ (452,530) |