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Note O - Income Taxes - Reconciliation of the Effective Income Tax Rate to US Federal Statutory Income Tax Rate (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Federal statutory income tax rate | $ (1,673,013) |
Federal statutory income tax rate, percent | 21.00% | 21.00%
State taxes, net of federal benefit | $ 0 |
State taxes, net of federal benefit, percent | 0.00% | 0.82%
Amortization of intangible assets | $ 33,242 |
Amortization of intangible assets, percent | (0.70%) |
Restricted Stock units | $ 26,334 |
Restricted Stock units, percent | (0.60%) |
Others | $ 2,918 |
Others, percent | (0.10%) |
Expiration of net operating loss and research credit carryforwards | $ 1,848,627 |
Expiration of net operating loss and research credit carryforwards, percent | (40.50%) | (46.14%)
Foreign rate differential - all | $ 187,823 |
Foreign rate differential - all, percent | (4.10%) | (7.23%)
True ups and other | $ 175,955 |
True ups and other, percent | (3.90%) |
Valuation allowance | $ (585,386) |
Valuation allowance, percent | 28.50% | 33.98%
Provision for income tax expense (benefit) | $ 16,500 | $ (22,998)
Effective tax rate, percent | (0.40%) | 0.32%
Permanent differences |  | (1.84%)
Rate change |  | (0.41%)
Other |  | 0.14%

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