v3.25.2
Note 4 - Equity - Black-Scholes Option Pricing Model (Details) - $ / shares
12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Jan. 26, 2024
Share Price (in dollars per share)     $ 100
Warrant [Member] | Black-Scholes Model [Member] | Minimum [Member]      
Share Price (in dollars per share) $ 0 $ 2  
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Discount Rate   4.04%  
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate   104.00%  
Warrant [Member] | Black-Scholes Model [Member] | Maximum [Member]      
Share Price (in dollars per share)   $ 5  
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Discount Rate   4.54%  
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate   119.00%  
Share-Based Payment Arrangement, Option [Member] | Black-Scholes Model [Member]      
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Discount Rate 0.00%    
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term (Year) 6 years 3 months    
Share-Based Payment Arrangement, Option [Member] | Black-Scholes Model [Member] | Minimum [Member]      
Share Price (in dollars per share) $ 1.99    
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Discount Rate 4.17%    
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate 110.00%    
Share-Based Payment Arrangement, Option [Member] | Black-Scholes Model [Member] | Maximum [Member]      
Share Price (in dollars per share) $ 56.2    
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Discount Rate 4.39%    
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Volatility Rate 138.00%