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Stock Options and Warrants (Tables)
 12 Months Ended
Dec. 31, 2021
Stock Options and Warrants [Abstract]  
Schedule of fair values of stock options granted
   2021  2020
Risk-free interest rates  0.35% - 0.83%  0.22% - 1.61%
Expected life (in years)  2.50 - 4.00  2.50 - 4.00
Expected volatility  73.2% - 75.2%  71.5% - 75.4%
Dividend yield  0.00%  0.00%
       
Weighted-average grant date fair value per share  $0.60  $0.64

 
Schedule of company's stock options
       Wtd. Avg. 
       Exercise 
   Options   Price 
Balance, January 1, 2020   1,369,649   $2.01 
Granted during the year   560,000    1.20 
Exercised during the year   
-
    
-
 
Terminated/Expired during the year   (70,649)   7.48 
Balance, December 31, 2020   1,859,000   $1.56 
Granted during the year   847,500    1.30 
Exercised during the year   (110,000)   1.04 
Terminated/Expired during the year   (128,000)   6.17 
Balance, December 31, 2021   2,468,500   $1.25 
           
Exercisable at December 31, 2021   1,873,496   $1.26 

 

           Wtd. Avg. 
       Wtd. Avg.   Remaining 
       Exercise   Contractual 
   Warrants   Price   Life (years) 
Balance, January 1, 2020   2,182,902   $2.90    2.43 
Granted during the year   
-
    
-
    
-
 
Terminated/Expired during the year   
-
    
-
    
-
 
Balance, December 31, 2020   2,182,902   $2.90    1.43 
Granted during the year   
-
    
-
    
-
 
Terminated/Expired during the year   (675,691)  $4.47    
-
 
Balance, December 31, 2021   1,507,211   $2.19    0.75 
                
Exercisable at December 31, 2021   1,507,211   $2.19    0.75 
Schedule of stock options
Range of Exercise Price   Number
Outstanding		   Wtd. Avg, Life   Wtd. Avg.
Exercise Price
$0.88 - $2.38   2,468,500   3.3 years   $1.25

 

Range of Exercise Price   Number
Exercisable		   Wtd. Avg, Life   Wtd. Avg.
Exercise Price
$0.88 - $2.38   1,873,496   3.1 years   $1.26