v3.25.2
Note 3 - Convertible Notes Payable - Schedule of Detachable Warrants (Details) - USD ($)
 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Balance, outstanding (in shares) 25,003  
Outstanding, weighted average exercise price (in dollars per share) $ 20  
Outstanding, remaining term (Year) 3 years 5 months 23 days 4 years 5 months 23 days
Outstanding, intrinsic value [1] $ 0 $ 1,010,000
Granted, outstanding (in shares) 0  
Granted, weighted average exercise price (in dollars per share) $ 0  
Exercised, outstanding (in shares) 0  
Exercised, weighted average exercise price (in dollars per share) $ 0  
Forfeited/Cancelled, outstanding (in shares) 0  
Forfeited/Cancelled, weighted average exercise price (in dollars per share) $ 0  
Expired, outstanding (in shares) 0  
Expired, weighted average exercise price (in dollars per share) $ 0  
Balance, outstanding (in shares) 25,003 25,003
Outstanding, weighted average exercise price (in dollars per share) $ 20 $ 20
Exercisable (in shares) 25,003  
Exercisable, weighted average exercise price (in dollars per share) $ 20  
Exercisable, remaining term (Year) 3 years 5 months 23 days  
Exercisable, intrinsic value [1] $ 0  
[1] Aggregate Intrinsic Value = Excess of market value over the exercise price of all in-the-money warrants. No outstanding or exercisable warrants were in-the-money as of March 31, 2024.