Note 8 - Long-term Investments (Details Textual) - Superhero Acquisition LP [Member] - USD ($) $ / shares in Units, $ in Thousands	Aug. 31, 2026	May 31, 2026
Equity Investment, Strike Price (in dollars per share)		$ 1
Equity Securities without Readily Determinable Fair Value, Amount	$ 4,364	$ 4,364
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

Amount of investment in equity security without readily determinable fair value.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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