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Note M - Equity (Details Textual) |  |  |  |  |  |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 30, 2026 | Apr. 29, 2026 | Oct. 27, 2025 USD ($) $ / shares shares | Aug. 08, 2025 shares | Jan. 15, 2025 USD ($) $ / shares shares | Sep. 12, 2024 USD ($) $ / shares shares | Jun. 18, 2021 shares | Dec. 31, 2025 USD ($) $ / shares shares | Dec. 31, 2024 USD ($) $ / shares shares | Dec. 31, 2023 $ / shares shares | Dec. 14, 2023 shares
Preferred Stock, Shares Authorized (in shares) |  |  |  |  |  |  |  | 5,000,000 |  |  |
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 1 |  |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) |  |  |  |  |  |  |  |  |  |  | 33,333
Share-Based Payment Arrangement, Expense | $ |  |  |  |  |  |  |  | $ 166,575 | $ 243,250 |  |
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture | $ |  |  |  |  |  |  |  | 20,004 | 18,006 |  |
Proceeds from Warrant Exercises | $ |  |  |  |  |  |  |  | $ 6,966,558 | $ 1,908,099 |  |
Share Price (in dollars per share) | $ / shares |  |  |  |  |  |  |  | $ 5.4 | $ 17.1 | $ 30 |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number (in shares) |  |  |  |  |  |  |  | 0 |  |  |
Existing Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercised During Period (in shares) |  |  | 309,167 |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  |  | $ 10.2 |  | $ 21.5 |  |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  | 618,334 |  |  |  |  |  |  |  |
Warrants and Rights Outstanding, Term (Year) |  |  | 5 years |  |  |  |  |  |  |  |
Beneficial Ownership Limitation, Percentage of Common Stock Outstanding |  |  | 4.99% |  |  |  |  |  |  |  |
Proceeds from Warrant Exercises | $ |  |  | $ 3.1 |  |  |  |  |  |  |  |
Fee on Proceeds From Warrants. Percent |  |  | 6.00% |  |  |  |  |  |  |  |
Outstanding Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercised During Period (in shares) |  |  |  |  | 206,111 |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  |  |  |  | $ 18.5 |  |  |  |  |  |
Proceeds from Warrant Exercises | $ |  |  |  |  | $ 3,800,000 |  |  |  |  |  |
Warrant Inducement Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  |  |  |  |  | $ 18.5 |  |  |  |  |
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) |  |  |  |  |  | 103,056 |  |  |  |  |
Proceeds from Warrant Exercises | $ |  |  |  |  |  | $ 1.9 |  |  |  |  |
Series B Warrants [Member] |  |  |  |  |  |  |  |  |  |  |
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares |  |  |  |  |  | $ 18.5 |  |  |  |  |
Director [Member] |  |  |  |  |  |  |  |  |  |  |
Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture (in shares) |  |  |  |  |  |  |  | 2,314 | 1,205 |  |
Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture | $ |  |  |  |  |  |  |  | $ 20,004 | $ 18,006 |  |
Forecast [Member] | Reverse Stock Split [Member] |  |  |  |  |  |  |  |  |  |  |
Stockholders' Equity Note, Stock Split, Conversion Ratio | 10 | 10 |  |  |  |  |  |  |  |  |
Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent |  |  |  |  |  |  | 85.00% |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) |  |  |  | 70,000 |  |  |  |  |  |  |
Stock Issued During Period, Shares, Employee Stock Purchase Plans (in shares) |  |  |  |  |  |  |  | 2,126 | 264 |  |
Share-Based Payment Arrangement, Expense | $ |  |  |  |  |  |  |  | $ 144,321 | $ 224,470 |  |
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares) |  |  |  |  |  |  |  | 28,300 | 17,896 |  |
Stock Issued During Period, Shares, Restricted Stock Award, Forfeited (in shares) |  |  |  |  |  |  |  | 3,025 | 917 |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) |  |  |  |  |  |  |  | 3 years |  |  |
In The Money Options [Member] |  |  |  |  |  |  |  |  |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number (in shares) |  |  |  |  |  |  |  | 0 | 0 | 0 |
Employee Stock Purchase Plan [Member] |  |  |  |  |  |  |  |  |  |  |
Common Stock, Capital Shares Reserved for Future Issuance (in shares) |  |  |  |  |  |  | 4,384 |  |  |  |
Share-Based Payment Arrangement, Expense | $ |  |  |  |  |  |  |  | $ 2,250 | $ 775 |  |

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