Annual report pursuant to Section 13 and 15(d)

12. Stock Options (Details-Option activity)

v3.19.1
12. Stock Options (Details-Option activity) - Stock Options [Member] - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Stock Options      
Number of Options outstanding beginning balance 1,294,045 1,373,554  
Number of Options Granted 170,176 0  
Number of Options Exercised 0 0  
Number of Options Cancelled 57,294 79,509  
Number of Options Expired 147,512 0  
Number of Options outstanding ending balance 1,259,415 1,294,045 1,373,554
Number of Options exercisable 1,089,239 1,070,869  
Exercise Price Per Share      
Exercise price per share, range $2.09 - $12.00 $2.82 - $12.00  
Exercise price per share, options granted $2.09    
Exercise price per share, options cancelled $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  
Exercise price per share, exercisable $2.70 - $9.00 $2.70 - $9.00  
Weighted Average Remaining Contractual Life      
Weighted Average Remaining Contractual Life 2 years 6 months 2 years 11 months 26 days 3 years 11 months 26 days
Weighted average remaining contractual life, options granted 4 years 6 months 18 days    
Weighted average remaining contractual life, options cancelled 3 years 6 months 21 days    
Weighted average remaining contractual life, exercisable 2 years 8 months 12 days 2 years 11 months 15 days  
Aggregate Intrinsic Value      
Aggregate intrinsic value, options outstanding $ 0 $ 280,642  
Aggregate intrinsic value, exercisable $ 0 $ 0  
Weighted Average Exercise Price Per Share      
Weighted Average Exercise Price per Share beginning balance $ 8.14 $ 8.14  
Weighted Average Exercise Price Options Granted 2.09    
Weighted Average Exercise Price Options Cancelled 10.08    
Weighted Average Exercise Price Options Expired 4.3    
Weighted Average Exercise Price per Share ending balance 7.39 8.14 $ 8.14
Weighted Average Exercise Price per Share Exercisable $ 8.32 $ 7.44