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Earnings per Share
 6 Months Ended
Jun. 30, 2023
Earnings Per Share [Abstract]  
Earnings per Share

10.            Earnings per Share:

The computation of basic earnings per share is based on the weighted average number of common shares outstanding for the six-month periods ended June 30, 2022 and 2023. The calculation of basic earnings per share does not consider the non-vested shares as outstanding until the time-based vesting restriction has lapsed. Diluted earnings per share gives effect to stock awards and restricted stock units using the treasury stock method, unless the impact is anti-dilutive.

The Company calculates basic and diluted earnings per share as follows:

         
    Six months ended June 30,
    2022   2023
Income :        
Net income $               370,510  $                  90,194
            
           
Basic earnings per share:        
Weighted average common shares outstanding, basic          102,098,942          102,821,671
Basic earnings per share $                     3.63  $                      0.88
         
Effect of dilutive securities:        
Dillutive effect of non vested shares                 341,003                 349,053
Weighted average common shares outstanding, diluted          102,439,945            103,170,724
         
Diluted earnings per share $                     3.62  $                      0.87