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Note 7 - Intangible Assets (Details Textual) - USD ($)
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2025
Dec. 31, 2024
Finite-Lived Intangible Assets, Gross $ 191,040   $ 191,040     $ 191,040
Finite-Lived Intangible Asset, Useful Life (Year) 10 years   10 years      
Amortization of Intangible Assets $ 4,776 $ 4,776 $ 14,328 $ 14,328    
Finite-Lived Intangible Assets, Net $ 4,776   $ 4,776     $ 19,104
Forecast [Member]            
Amortization of Intangible Assets         $ 19,104