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1. Summary of Significant Accounting Policies (Details-Options outstanding) (USD $)
3 Months Ended
Mar. 31, 2014
Number of Shares  
Outstanding options, beginning balance 10,128,000
Granted 0
Exercised (574,000)
Forfeited (103,000)
Outstanding options, ending balance 9,451,000
Options exercisable 5,433,000
Weighted Average Exercise Price  
Outstanding options, beginning balance $ 3.30
Granted   
Exercised $ 2.70
Forfeited $ 4.58
Outstanding options, ending balance $ 3.33
Options exercisable $ 2.31
Weighted Average Remaining Contractual Term  
Outstanding options, ending balance 6 years 3 months 29 days
Options exercisable 4 years 11 months 5 days