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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2022
Earnings Per Share [Abstract]  
Schedule of Earning Per Share, Basic and Diluted

Earnings per share amounts have been retroactively adjusted for the effect of annual stock dividends. In accordance with GAAP, the basic and diluted earnings per share amounts were calculated as follows:

 

   2022   2021   2022   2021 
   Three Months Ended
June 30		   Six Months Ended
June 30		 
   2022   2021   2022   2021 
Numerator:                    
Net earnings  $3,574,449   $11,257,479   $6,803,167   $23,386,194 
Denominator:                    
Basic weighted-average shares outstanding   21,184,688    21,098,789    21,282,747    21,085,669 
Effect of dilutive securities:                    
Employee stock options   833,142    824,058    851,132    867,350 
                     
Diluted weighted-average shares outstanding   22,017,830    21,922,847    22,133,879    21,953,019 
                     
Basic net earnings per share  $0.17   $0.53   $0.32   $1.11 
                     
Diluted net earnings per share  $0.16   $0.51   $0.31   $1.07 
Summary of Activities in Shares of Capital Stock

The following table summarizes the activity in shares of capital stock.

 

   Class A   Class C 
Outstanding shares at December 31, 2020   16,595,783    2,679,603 
           
Exercise of stock options   80,948    - 
Stock dividends   836,263    131,554 
Conversion of Class C to Class A   48,527    (48,527)
           
Outstanding shares at June 30, 2021   17,561,521    2,762,630 
           
Outstanding shares at December 31, 2021   17,642,722    2,866,565 
           
Exercise of stock options   69,096    - 
Stock dividends   889,554    139,462 
Conversion of Class C to Class A   77,316    (77,316)
           
Outstanding shares at June 30, 2022   18,678,688    2,928,711