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Note 7 - Earnings Per Share - Amounts Used in Computing Earnings Per Share (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2020
Mar. 31, 2020
Jun. 30, 2021
Jun. 30, 2020
Net Income (Loss) Attributable to Parent, Total $ (3,098,108) $ (2,459,429) $ (2,563,811) $ 303,499 $ (5,557,537) $ (2,260,312)
Weighted average number of common shares used in basic earnings per share (in shares)         21,723,578 20,758,855
Effect of dilutive securities, stock options, RSUs, and warrants (in shares)         0 0
Weighted average number of common shares and potential dilutive common shares outstanding used in dilutive earnings per share (in shares)         21,723,578 20,758,855