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Note 8 - Commitments and Contingencies (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Operating Lease, Expense $ 16,200 $ 8,400 $ 35,860 $ 26,292
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent     90.00%  
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay     4.00%  
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 100,000 $ 49,135 $ 300,000 $ 100,000