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Note 8 - Earnings Per Share - Amounts Used in Computing Earnings Per Share (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Mar. 31, 2023
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2023
Jun. 30, 2022
Net income (loss) $ (1,555,292) $ (2,389,503) $ (6,507,059) $ (3,746,424) $ (3,944,795) $ (10,253,483)
Weighted average number of common shares used in basic earnings per share (in shares) 5,660,007   4,012,187   5,656,809 3,344,208
Effect of dilutive securities, stock options, RSUs, and warrants (in shares) 0   0   0 0
Weighted average number of common shares and potential dilutive common shares outstanding used in dilutive earnings per share (in shares) 5,660,007   4,012,187   5,656,809 3,344,208