Quarterly report pursuant to Section 13 or 15(d)

11. Stock Options (Details-Option activity)

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11. Stock Options (Details-Option activity) - Stock Options [Member] - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2016
Dec. 31, 2015
Stock Options    
Number of Options outstanding beginning balance 4,223,208  
Number of Options Granted 0  
Number of Options Exercised 0  
Number of Options Cancelled 165,879  
Number of Options Expired 0  
Number of Options outstanding ending balance 4,057,329 4,223,208
Number of Options exercisable 300,061 300,061
Exercise Price Per Share    
Exercise price per share beginning balance $0.94-$4.00  
Exercise price per share, exercisable $ 0.94 $ 0.94
Weighted Average Remaining Contractual Life    
Weighted Average Remaining Contractual Life 4 years 5 months 9 days 4 years 11 months 9 days
Weighted average remaining contractual life, exercisable 4 years 3 months 18 days 4 years 9 months 18 days
Aggregate Intrinsic Value    
Aggregate intrinsic value, options outstanding $ 636,872 $ 58,512
Aggregate intrinsic value, exercisable $ 369,074 $ 58,512
Weighted Average Exercise Price Per Share    
Weighted Average Exercise Price per Share beginning balance $ 2.70  
Weighted Average Exercise Price per Share ending balance 2.70 $ 2.70
Weighted Average Exercise Price per Share Exercisable $ 0.94 $ 0.94