Note 12 - Long-term Investments (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |
12 Months Ended | ||||
|---|---|---|---|---|---|
May 31, 2025 |
May 31, 2024 |
May 31, 2023 |
Jan. 16, 2025 |
Aug. 31, 2021 |
|
| Equity Securities without Readily Determinable Fair Value, Amount | $ 8,160 | $ 5,500 | |||
| Proceeds from Sale of Equity Method Investments | 324 | ||||
| Unrealized Gain (Loss) on Investments | $ 5,500 | $ 217 | $ 2,366 | ||
| Superhero Acquisition LP [Member] | |||||
| Subsidiary, Ownership Percentage, Parent | 68.00% | ||||
| Equity Investment, Strike Price (in dollars per share) | $ 1 | ||||
| Equity Securities without Readily Determinable Fair Value, Amount | $ 8,160 | ||||
| Superhero Acquisition LP [Member] | Upon U.S. Federal Cannabis Legalization [Member] | |||||
| Subsidiary, Ownership Percentage, Parent | 68.00% | 68.00% | |||
| Equity Investment, Strike Price (in dollars per share) | $ 1 | $ 1 | |||