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13) Stock Compensation Plans (Tables)
 12 Months Ended
Dec. 31, 2020
Table Text Block Supplement [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   Underlying stock FMV   Weighted-Average Volatility   Weighted-Average Risk-Free Interest Rate   Weighted-Average Expected Life (years)
March 27, 2020   All Plans    $            0.65   5%    $      3.76   32.29%   1.64%   4.82
                             
December 6, 2019   All Plans    $            0.96   5%    $      5.19   32.79%   1.64%   4.83
                             
January 17, 2019   All Plans    $            1.12   5%    $      4.98   36.04%   2.56%   5.31
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, 2019      1,011,274    $    4.49         577,280    $    5.15
Adjustment for the effect of stock dividends          51,018              28,295    
Granted          81,000             180,000    
Exercised         (45,834)           (191,443)    
Cancelled         (11,405)                       -    
                 
Outstanding at December 31, 2019      1,086,053    $    4.41         594,132    $    5.36
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    $    4.33         662,666    $    4.73
                 
Exercisable at end of year      1,053,903    $    4.45         616,542    $    4.91
                 
Available options for future grant         325,372             266,500    
                 
Weighted average contractual term of options                
outstanding at December 31, 2020   5.50 years       6.71 years    
                 
Weighted average contractual term of options                
exercisable at December 31, 2020   5.43 years       6.63 years    
                 
Aggregated intrinsic value of options outstanding              
at December 31, 2020 (1)   $4,311,983       $2,396,954    
                 
Aggregated intrinsic value of options exercisable              
at December 31, 2020 (1)   $4,223,251       $2,183,399    
                                    
(1) The Company used a stock price of $8.35 as of December 31, 2020 to derive intrinsic value.