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Note 18 - Commitments and Contingencies (Details Textual) - USD ($)
 12 Months Ended
Jun. 05, 2025
Jun. 30, 2025
Jun. 30, 2024
May 31, 2023
Payments to Acquire Intangible Assets   $ 3,000,000 $ (0)  
Fixed Payment Arrangements   $ 3,223,000 $ 8,337,000  
Office Space in Berwyn, Pennsylvania [Member]        
Lessee, Operating Lease, Renewal Term (Year)     5 years  
Operating Lease, Undiscounted Minimum Monthly Payment     $ 13,000  
Principal Office Denver Colorado [Member]        
Lessee, Operating Lease, Renewal Term (Year)       5 years
Operating Lease, Undiscounted Minimum Monthly Payment       $ 15,500
EXXUA Exclusive Commercialization Agreement [Member]        
Payments to Acquire Intangible Assets $ 3,000,000      
Commercialization Agreement, Period of Payment After Trigger (Day) 45 days      
Commercialization Agreement, Payment Trigger, Period After First Product Launch (Year) 1 year      
Commercialization Agreement, Second Payment $ 3,000,000      
Commercialization Agreement, Second Payment, Conditional 5,000,000      
Commercialization Agreement, Increase in Second Payment, Condition, Minimum Net Sales For First Year 35,000,000      
Commercialization Agreement, Milestone Payments, Threshold Sales $ 100,000,000      
Commercialization Agreement, Milestone Payments, Percentage of Sales Exceeding Second Threshold 10.00%      
Commercialization Agreement, Milestone Payments, Second Threshold Sales $ 1,000,000,000      
Commercialization Agreement, Royalty Fees, Threshold One, Net Sales 300,000,000      
Commercialization Agreement, Royalty Fees, Threshold Two, Net Sales 300,000,000      
Commercialization Agreement, Supply Price, Threshold Net Sales $ 300,000,000      
Commercialization Agreement, Termination for Breach, Period After Written Notice (Day) 90 days      
Commercialization Agreement, Breach, Period for Curation (Day) 90 days      
Commercialization Agreement, Termination for Difficult Breach, Period After Written Notice (Day) 120 days      
EXXUA Exclusive Commercialization Agreement [Member] | Minimum [Member]        
Commercialization Agreement, Milestone Payment Based on Sales $ 5,000,000      
Commercialization Agreement, Royalty Fees, Threshold One, Percentage of Net Sales 28.00%      
Commercialization Agreement, Royalty Fees, Threshold Two, Percentage of Net Sales 24.50%      
Commercialization Agreement, Supply Price, Percentage of Net Sales After Threshold 3.00%      
EXXUA Exclusive Commercialization Agreement [Member] | Maximum [Member]        
Commercialization Agreement, Milestone Payment Based on Sales $ 100,000,000      
Commercialization Agreement, Royalty Fees, Threshold One, Percentage of Net Sales 39.00%      
Commercialization Agreement, Royalty Fees, Threshold Two, Percentage of Net Sales 35.50%      
Commercialization Agreement, Supply Price, Percentage of Net Sales After Threshold 4.00%      
Tris Karbinal Agreement [Member]        
Supply and Distribution Commitment, Period (Year)   20 years    
Supply and Distribution Commitment, Royalty, Percentage of Net Sales   23.50%    
Tris Karbinal Agreement [Member] | Other Noncurrent Liabilities [Member]        
Fixed Payment Arrangements   $ 200,000