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Note 7 - Intangible Assets (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended 24 Months Ended
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Impairment of Intangible Assets (Excluding Goodwill)   $ 8,300 $ 0  
Amortization Expense of Intangible Assets   $ 4,989 $ 4,989  
Minimum [Member]        
Finite-Lived Intangible Asset, Useful Life, Renewable Period (Year)   1 year    
Maximum [Member]        
Finite-Lived Intangible Asset, Useful Life, Renewable Period (Year)   20 years    
Technology-Based Intangible Assets [Member]        
Impairment of Intangible Assets (Excluding Goodwill) $ 8,300      
Finite-Lived Intangible Assets, Impaired, Gross 19,100 $ 19,100   $ 19,100
Finite-Lived Intangible Assets, Impaired, Accumulated Amortization 10,800 $ 10,800   $ 10,800
Tris Karbinal Agreement [Member]        
Impairment of Intangible Assets (Excluding Goodwill) 2,700      
Supply and Distribution Agreement, Extension Term (Year)       20 years
Poly-Tri Agreements [Member]        
Impairment of Intangible Assets (Excluding Goodwill) $ 5,600      
ADHD Products Patents [Member]        
Finite-Lived Intangible Asset, Useful Life (Year) 12 years 7 months 6 days 12 years 7 months 6 days   12 years 7 months 6 days
TRRP Proprietary Technology [Member]        
Finite-Lived Intangible Asset, Useful Life (Year) 12 years 7 months 6 days 12 years 7 months 6 days   12 years 7 months 6 days
Commercialization Rights [Member]        
Amortization Expense of Intangible Assets   $ 0