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Note 10 - Long-term Debt - Notes Payable (Details) - Senior Promissory Notes [Member] - USD ($)
Dec. 31, 2023
Oct. 13, 2023
Dec. 31, 2022
Jun. 22, 2022
Senior Promissory Notes $ 6,000,000   $ 6,000,000 $ 6,000,000
Less: unamortized debt discount (1,311,989) $ (1,193,206) (519,686) $ (695,749)
Senior Promissory Notes payable 4,688,011   5,480,314  
Current portion of Senior Promissory Notes payable 0   0  
Senior Promissory Notes payable, less current portion $ 4,688,011   $ 5,480,314