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Note 7 - Intangible Assets (Details Textual) - USD ($)
$ in Thousands
1 Months Ended 3 Months Ended
Jun. 30, 2025
Sep. 30, 2025
Jun. 30, 2025
Sep. 30, 2024
Amortization Expense of Intangible Assets   $ 771   $ 1,248
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  
Finite-Lived Intangible Assets, Impaired, Accumulated Amortization $ 10,800   10,800  
Developed Technology Rights [Member] | ADHD Portfolio [Member]        
Finite-Lived Intangible Assets, Remaining Amortization Period (Year)   12 years 6 months    
Tris Karbinal Agreement [Member]        
Impairment of Intangible Assets (Excluding Goodwill)     $ 8,300  
TRRP Proprietary Technology [Member]        
Finite-Lived Intangible Assets, Remaining Amortization Period (Year)   12 years 6 months    
Commercialization Rights [Member]        
Amortization Expense of Intangible Assets   $ 0