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Note 11 - Earnings Per Share (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
   

For the six months

ended June 30,

 
   

2021

   

2022

 
                 

Net income

    11,736,326       60,686,136  

Dividends to Series B Preferred shares

    (255,324 )     -  

Preferred deemed dividend

    (345,423

)

    -  

Net income attributable to common shareholders

    11,135,579       60,686,136  

Weighted average common shares – outstanding, basic

    6,745,305       7,223,189  

Basic earnings per share

    1.65       8.40  

Effect of dilutive securities:

               

Dilutive effect of unvested shares

    44,413       33,245  

Weighted average common shares – outstanding, diluted

    6,789,718       7,256,434  

Diluted earnings per share

    1.64       8.36