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Note 5 - Property and Equipment (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Depreciation $ 3,105,126 $ 2,412,597 $ 8,825,619 $ 6,165,584