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Note 9 - Commitments and Contingencies (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Operating Lease, Expense $ 8,400 $ 7,484 $ 17,892 $ 15,150
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent     90.00%  
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay     4.00%