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Note 11 - Earnings Per Share - Summary of Basic and Diluted Loss Per Common Share (Details) - USD ($)
 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Net income $ 60,686,136 $ 11,736,326
Dividends to Series B Preferred shares 0 (255,324)
Preferred deemed dividend 0 (345,423)
Net income attributable to common shareholders $ 60,686,136 $ 11,135,579
Weighted average common shares – outstanding, basic (in shares) 7,223,189 6,745,305
Basic earnings per share (in dollars per share) $ 8.40 $ 1.65
Dilutive effect of unvested shares (in shares) 33,245 44,413
Weighted average common shares – outstanding, diluted (in shares) 7,256,434 6,789,718
Diluted earnings per share (in dollars per share) $ 8.36 $ 1.64
Series B Preferred Stock [Member]    
Dividends to Series B Preferred shares $ 0 $ (255,324)