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Note 8 - Long-term Debt (Details Textual) - Senior Promissory Notes [Member] - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Interest Expense, Debt $ 0 $ 0 $ 0 $ 0
Amortization of Debt Issuance Costs $ 150,591 $ 86,790 $ 296,631 $ 171,318