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Note 9 - Income Taxes (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Apr. 01, 2024
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Percentage of Valuation Allowance           100.00%
Proceeds From Sale of Net Operating Loss Amount $ 2,000,000          
Government Assistance, Nonoperating Income, Increase (Decrease)   $ 0 $ 1,983,095 $ 0 $ 1,983,095  
Sale of Net Operating Losses, Contingent Liability, Amount $ 2,200,000