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Stock Compensation Plans (Tables)
 12 Months Ended
Dec. 31, 2021
Share-based Payment Arrangement [Abstract]  
Schedule of Assumptions Used

The following table summarizes the assumptions used in estimating the fair value of each option granted along with the weighted-average fair value of the options granted.

 

          Assumptions 
Grant Date  Plan  Weighted-Average Fair Value of Each Option   Expected Dividend Yield (1)   Underlying stock FMV   Weighted-Average Volatility   Weighted-Average Risk-Free Interest Rate   Weighted-Average Expected Life (years) 
December 3, 2021  All Plans  $2.99    5%  $8.62    36.50%   1.15%   5.31 
                                  
March 27, 2020  All Plans  $0.65    5%  $3.76    32.29%   1.64%   4.82 
Schedule of Activity of Stock Option Plans

Activity of the stock option plans is summarized as follows:

 

   Number of
Class A Shares		   Weighted Average Exercise Price   Number of
Class C Shares		   Weighted Average Exercise Price 
Outstanding at January 1, 2020   1,086,053   $4.20    594,132   $5.10 
Adjustment for the effect of stock dividends   27,968         19,354      
Granted   77,000         180,000      
Exercised   (116,487)        (130,820)     
Cancelled   (1,671)        -      
                     
Outstanding at December 31, 2020   1,072,863   $4.12    662,666   $4.50 
Adjustment for the effect of stock dividends   47,594         33,136      
Granted   89,500         230,000      
Exercised   (183,935)        (104,656)     
Cancelled   (1,671)        -      
                     
Outstanding at December 31, 2021   1,024,351   $4.61    821,146   $5.48 
                     
Exercisable at end of year   934,851   $4.23    591,146   $4.26 
                     
Available options for future grant   232,376         16,689      
                     
Weighted average contractual term of options outstanding at December 31, 2021   4.54 years         7.24 years      
                     
Weighted average contractual term of options exercisable at December 31, 2021   4.03 years         6.62 years      
                     
Aggregated intrinsic value of options outstanding at December 31, 2021 (1)  $4,700,708        $3,009,168      
                    
Aggregated intrinsic value of options exercisable at December 31, 2021 (1)  $4,648,798        $2,918,768