General form of registration statement for all companies including face-amount certificate companies

12. Stock Options (Details-Option activity)

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12. Stock Options (Details-Option activity) - Stock Options [Member] - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Stock Options        
Number of Options outstanding beginning balance 1,259,415 1,294,045 1,373,554  
Number of Options Granted 81,000 170,176 0  
Number of Options Exercised 0 0 0  
Number of Options Cancelled 40,793 57,294 79,509  
Number of Options Expired 0 147,512 0  
Number of Options outstanding ending balance 1,299,622 1,259,415 1,294,045 1,373,554
Number of Options exercisable 1,131,172 1,089,239 1,070,869  
Exercise Price Per Share        
Exercise price per share, range $2.09 - 12.00 $2.09 - $12.00 $2.82 - $12.00  
Exercise price per share, options granted $1.99 $2.09    
Exercise price per share, options cancelled $1.99 - 2.70 $9.00 - $12.00 $2.70  
Exercise price per share, Expired   $2.80 - $6.00    
Exercise prices at period end $2.09 - 12.00 $2.09 - $12.00 $2.09 - $12.00  
Exercise price per share, exercisable $2.82 - 9.00 $2.70 - $9.00 $2.70 - $9.00  
Weighted Average Remaining Contractual Life        
Weighted Average Remaining Contractual Life 1 year 7 months 21 days 2 years 6 months 2 years 11 months 26 days 3 years 11 months 26 days
Weighted average remaining contractual life, options granted 3 years 4 years 6 months 18 days    
Weighted average remaining contractual life, options cancelled 4 years 11 months 1 day 3 years 6 months 21 days    
Weighted average remaining contractual life, exercisable 1 year 3 months 22 days 2 years 8 months 12 days 2 years 11 months 15 days  
Aggregate Intrinsic Value        
Aggregate intrinsic value, options outstanding $ 0 $ 0 $ 280,642  
Aggregate intrinsic value, exercisable $ 0 $ 0 $ 0  
Weighted Average Exercise Price Per Share        
Weighted Average Exercise Price per Share beginning balance $ 7.39 $ 8.14 $ 8.14  
Weighted Average Exercise Price Options Granted 1.99 2.09    
Weighted Average Exercise Price Options Cancelled 4.39 10.08    
Weighted Average Exercise Price Options Expired   4.3    
Weighted Average Exercise Price per Share ending balance 7.23 7.39 8.14 $ 8.14
Weighted Average Exercise Price per Share Exercisable $ 8.00 $ 8.32 $ 7.44