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Note 5 - Commitments and Contingencies (Details Textual)
3 Months Ended 12 Months Ended
Jun. 17, 2024
USD ($)
shares
Jun. 30, 2025
USD ($)
shares
Mar. 31, 2025
USD ($)
shares
Nov. 01, 2024
shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares   5,000 143,303  
Stock Required to be Issued for Stock Split, Shares (in shares) | shares       271,846
Employment Contracts [Member] | Chief Executive Officer [Member]        
Employment Agreement, Term of Contract (Year) 3 years      
Annual Base Salary $ 450,000      
Employment Agreement, Bonus as a Percentage of Annual Base Compensation 60.00%      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Vested in Period, Fair Value $ 1,000,000      
Employment Contracts [Member] | Chief Executive Officer [Member] | Scenario, Contract Termination [Member]        
Employment Agreement, Bonus as a Percentage of Annual Base Compensation 100.00%      
Employment Contracts [Member] | Chief Executive Officer [Member] | Scenario, Contract Termination, Without Cause [Member]        
Employment Agreement, Bonus as a Percentage of Annual Base Compensation 50.00%      
Employment Contracts [Member] | Chief Executive Officer [Member] | Inducement Options [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period (Year) 10 years      
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares 45,000      
Employment Contracts [Member] | Chief Executive Officer [Member] | Inducement Options [Member] | Share-Based Payment Arrangement, Tranche One [Member]        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares) | shares 11,250      
Employment Contracts [Member] | Executive Vice Chair and Strategic Advisor to the Chief Executive Officer [Member]        
Employment Agreement, Term of Contract (Year) 2 years      
Annual Base Salary $ 150,000      
Employment Agreement, Bonus as a Percentage of Annual Base Compensation 50.00%      
Employment Contracts [Member] | Minimum [Member]        
Employee Benefits and Share-Based Compensation   $ 1,200,000 $ 1,100,000  
Employment Contracts [Member] | Maximum [Member]        
Employee Benefits and Share-Based Compensation   $ 1,700,000 $ 1,600,000  
Pending Litigation [Member]        
Loss Contingency, Pending Claims, Number   0 0