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

(4) Earnings Per Share. Basic earnings per share have been computed on the basis of the weighted-average number of shares of common stock outstanding during the periods. During the three- and six-months periods ended June 30, 2023 and 2022, basic and diluted earnings per share is the same as there were no outstanding potentially dilutive securities. Earnings per common share have been computed based on the following:

   2023   2022   2023   2022 
   Three Months Ended   Six Months Ended 
   June 30,   June 30, 
   2023   2022   2023   2022 
Weighted-average number of common shares outstanding used to calculate basic and diluted earnings per common share  $7,250,219   $6,007,484   $7,226,953   $5,455,406