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1. Summary of Significant Accounting Policies (Details-Options outstanding) - $ / shares
9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Number of Shares    
Outstanding options, beginning balance 11,228,000  
Granted 2,015,000  
Exercised (127,000) (1,033,000)
Forfeited (155,000)  
Outstanding options, ending balance 12,961,000  
Options exercisable 7,646,000  
Weighted Average Exercise Price    
Outstanding options, beginning balance $ 4.66  
Granted 3.48  
Exercised 1.22  
Forfeited  
Outstanding options, ending balance 4.50  
Options exercisable $ 3.98  
Weighted Average Remaining Contractual Term    
Weighted Average Remaining Contractual Term, beginning 5 years 6 months 18 days  
Weighted Average Remaining Contractual Term, ending 5 years 1 month 6 days  
Options exercisable 4 years 5 months 19 days