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Note 4 - Convertible Notes Payable (Details Textual) - USD ($) |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 08, 2024 | Mar. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2024 | Oct. 04, 2024
Interest Paid, Excluding Capitalized Interest, Operating Activity |  |  | $ 107,173 | $ 0 |  |
Amortization of Debt Issuance Costs |  |  | 11,762 | 3,125 |  |
Conversion Of Convertible Notes Into Common Stock [Member] |  |  |  |  |  |
Debt Conversion, Original Debt, Amount |  |  | $ 910,000 |  |  |
Debt Conversion, Converted Instrument, Shares Issued (in shares) |  |  | 556,623 |  |  |
Senior Secured 2024 Notes [Member] |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 6,000,000 |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.00% | 8.00% |  |  |
Debt Issuance Costs, Gross |  | $ 175,674 |  |  |  |
Debt Instrument, Term (Year) |  | 3 years |  |  |  |
Debt Instrument, Convertible, Conversion Price (in dollars per share) |  |  |  |  |  | $ 1.4
Interest Paid, Excluding Capitalized Interest, Operating Activity |  |  | $ 107,173 | 0 |  |
Amortization of Debt Issuance Costs |  |  | 11,762 |  |  |
Debt Issuance Costs, Net |  |  | 48,138 | 3,125 |  |
Amortization of Debt Issuance Costs |  |  |  | $ 4,000 |  |
Senior Secured 2024 Notes [Member] | Conversion Of Convertible Notes Into Common Stock [Member] | Bradley Scott Emalfarb [Member] |  |  |  |  |  |
Debt Conversion, Original Debt, Amount |  |  |  |  | $ 500,000 |
Debt Conversion, Converted Instrument, Shares Issued (in shares) |  |  |  |  | 294,891 |
Senior Secured 2024 Notes [Member] | Maximum [Member] |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.00% |  |  |  |
Senior Secured 2024 Notes [Member] | Related Party [Member] |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 2,000,000 | 2,000,000 |  |  |
Interest Payable |  |  | $ 21,800 |  |  |
Debt Conversion, Converted Instrument, Shares Issued (in shares) |  |  | 910,000 |  |  |
Senior Secured 2024 Notes [Member] | Third Party [Member] |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 4,000,000 |  |  |
Interest Payable |  |  | 80,000 |  |  |
The Francisco Trust [Member] |  |  |  |  |  |
Debt Instrument, Face Amount | [1] |  | $ 1,000,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [1] |  | 8.00% |  |  |
The Francisco Trust [Member] | Mr. Thomas Emalfarb [Member] |  |  |  |  |  |
Interest Payable |  |  | $ 20,000 |  |  |
Irrevocable Trust [Member] | Bradley Scott Emalfarb [Member] |  |  |  |  |  |
Debt Instrument, Face Amount | [2] |  | $ 410,000 |  |  |
Debt Instrument, Interest Rate, Stated Percentage | [2] |  | 8.00% |  |  |
Interest Payable |  |  | $ 0 |  |  |
Debt Conversion, Converted Instrument, Shares Issued (in shares) | [2] |  | 410,000 |  |  |
Irrevocable Trust [Member] | Thomas Emalfarb, Scott Emalfarb and Michael Emalfarb [Member] |  |  |  |  |  |
Interest Payable |  |  | $ 1,800 |  |  |
Irrevocable Trust [Member] | Conversion Of Convertible Notes Into Common Stock [Member] | Bradley Scott Emalfarb [Member] |  |  |  |  |  |
Debt Conversion, Original Debt, Amount |  |  |  |  | $ 410,000 |
Debt Conversion, Converted Instrument, Shares Issued (in shares) |  |  |  |  | 261,732 |
[1] | Mr. Thomas Emalfarb, nephew of Mr. Mark A. Emalfarb, our President and Chief Executive Officer, is the Trustee of the Francisco Trust. Mr. Thomas Emalfarb may be deemed to have voting, dispositive and investment power with respect to the shares of common stock held by the Francisco Trust and disclaims any such beneficial ownership other than to the extent of any pecuniary interest he may have therein, directly or indirectly. The amount of accrued interest as of December 31, 2024, is $20,000.
[2] | Mark A. Emalfarb, our President and Chief Executive Officer, is the Trustee of the Irrevocable Trust and the brother of Mr. Bradley S. Emalfarb, who is the sole beneficiary of the Irrevocable Trust. Mr. Bradley S. Emalfarb, as sole beneficiary of the Irrevocable Trust, therefore, may be deemed to have voting, dispositive and investment power with respect to the shares of common stock held by the Irrevocable Trust and disclaims any such beneficial ownership other than to the extent of any pecuniary interest he may have therein, directly or indirectly. For the year ended December 31, 2024, $500,000 of the Convertible Notes held by Mr. Bradley S. Emalfarb were converted into 294,891 shares of the Company’s common stock. For the year ended December 31, 2024, $410,000 of the Convertible Notes held by Bradley Scott Emalfarb Irrevocable Trust were converted into 261,732 shares of the Company’s common stock. As of December 31, 2024, the amount of accrued interest for Bradley Emalfarb and Bradley Scott Emalfarb Irrevocable Trust was $1,733 and $3,640, respectively.

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