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Note 4 - Convertible Notes Payable (Details Textual) - USD ($) |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
Mar. 08, 2024 | Sep. 30, 2024 | Jun. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Debt Conversion, Original Debt, Amount |  |  |  |  | $ 600,000 | $ 0
Stock Issued During Period, Value, Conversion of Convertible Securities |  | $ 200,000 | $ 400,000 | $ 281,307 |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares) |  |  |  |  | 335,195 |
Conversion Of Convertible Notes Into Common Stock [Member] |  |  |  |  |  |
Debt Conversion, Original Debt, Amount |  |  |  |  | $ 600,000 |
Debt Conversion, Converted Instrument, Shares Issued (in shares) |  |  |  |  | 335,195 |
Related Party [Member] |  |  |  |  |  |
Interest Expense, Nonoperating |  | $ 39,344 |  | $ (0) | $ 102,632 | $ (0)
Senior Secured 2024 Notes [Member] |  |  |  |  |  |
Debt Instrument, Face Amount | $ 6,000,000 |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.00% | 8.00% |  |  | 8.00% |
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ 1.4 |  |  |  |  |
Debt Issuance Costs, Gross | $ 175,674 |  |  |  |  |
Debt Instrument, Term (Year) | 3 years |  |  |  |  |
Interest Payment |  | $ 114,933 |  |  | $ 149,778 |
Interest Expense, Nonoperating |  | 17,244 |  |  |  |
Debt Issuance Costs, Net |  | 26,394 |  |  | $ 26,394 |
Stock Issued During Period, Value, Conversion of Convertible Securities |  | $ 400,000 |  |  |  |
Stock Issued During Period, Shares, Conversion of Convertible Securities (in shares) |  | 223,463 |  |  | 335,195 |
Senior Secured 2024 Notes [Member] | Conversion Of Convertible Notes Into Common Stock [Member] | Bradley Scott Emalfarb [Member] |  |  |  |  |  |
Debt Conversion, Original Debt, Amount |  |  |  |  | $ 200,000 |
Debt Conversion, Converted Instrument, Shares Issued (in shares) |  |  |  |  | 111,732 |
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 |  |  | $ 2,000,000 |
Interest Payable |  | 28,000 |  |  | $ 28,000 |
Debt Conversion, Converted Instrument, Shares Issued (in shares) |  |  |  |  | 600,000 |
Senior Secured 2024 Notes [Member] | Third Party [Member] |  |  |  |  |  |
Debt Instrument, Face Amount |  | 4,000,000 |  |  | $ 4,000,000 |
Interest Payable |  | 80,000 |  |  | 80,000 |
The Francisco Trust [Member] |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 1,000,000 |  |  | $ 1,000,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.00% |  |  | 8.00% |
The Francisco Trust [Member] | Mr. Thomas Emalfarb [Member] |  |  |  |  |  |
Interest Payable |  | $ 20,000 |  |  | $ 20,000 |
Irrevocable Trust [Member] | Bradley Scott Emalfarb [Member] |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 410,000 |  |  | $ 410,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.00% |  |  | 8.00% |
Interest Payable |  | $ 4,200 |  |  | $ 4,200 |
Debt Conversion, Converted Instrument, Shares Issued (in shares) |  |  |  |  | 200,000 |
Irrevocable Trust [Member] | Bradley Emalfarb [Member] |  |  |  |  |  |
Debt Instrument, Face Amount |  | $ 500,000 |  |  | $ 500,000 |
Debt Instrument, Interest Rate, Stated Percentage |  | 8.00% |  |  | 8.00% |
Interest Payable |  | $ 2,000 |  |  | $ 2,000 |
Irrevocable Trust [Member] | Thomas Emalfarb, Scott Emalfarb and Michael Emalfarb [Member] |  |  |  |  |  |
Interest Payable |  | $ 1,800 |  |  | $ 1,800 |
Irrevocable Trust [Member] | Conversion Of Convertible Notes Into Common Stock [Member] | Bradley Emalfarb [Member] |  |  |  |  |  |
Debt Conversion, Converted Instrument, Shares Issued (in shares) |  |  |  |  | 400,000 |

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