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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 |

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