v3.26.1
Note 3 - Equity - Schedule of Stock Option Activity (Details) - USD ($)
 1 Months Ended 12 Months Ended
Aug. 11, 2025
Jul. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2024
Outstanding, options (in shares)     243,483 100,180  
Outstanding, options, weighted average exercise price (in dollars per share)     $ 32.72 $ 46.59  
Outstanding, options, Weighted average remaining contractual term (Year)     8 years 4 months 13 days 8 years 11 months 1 day 9 years 4 months 6 days
Outstanding, aggregate intrinsic value     $ 0 $ 0 $ 1,680,672
Granted, options (in shares)     5,000 143,303  
Granted, options, weighted average exercise price (in dollars per share)     $ 1.85 $ 23.02  
Exercisable, options (in shares)     2,875 37,923  
Exercisable, options, weighted average exercise price (in dollars per share)     $ 15.21 $ 44.35  
Exercisable, options, Weighted average remaining contractual term (Year)     5 years 11 months 26 days 8 years 2 months 12 days  
Exercisable, aggregate intrinsic value     $ 0 $ 0  
Forfeited/Cancelled, options (in shares) (177,652) (57,331) (234,983)    
Forfeited/Cancelled, options, weighted average exercise price (in dollars per share)     $ 33.67    
Outstanding, options (in shares)     13,500 243,483 100,180
Outstanding, options, weighted average exercise price (in dollars per share)     $ 4.75 $ 32.72 $ 46.59