7. Shareholders' Equity (Details - Option activity)	12 Months Ended
	Dec. 31, 2015 $ / shares shares
Number of Shares
Outstanding options, beginning balance | shares	10,828,000
Granted | shares	1,965,000
Exercised | shares	(1,233,000)
Forfeited/Expired | shares	(332,000)
Outstanding options, ending balance | shares	11,228,000
Options exercisable | shares	6,132,000
Weighted Average Exercise Price
Outstanding options, beginning balance | $ / shares	$ 4.05
Granted | $ / shares	6.11
Exercised | $ / shares	1.39
Forfeited/Expired | $ / shares	5.43
Outstanding options, ending balance | $ / shares	4.66
Options exercisable | $ / shares	$ 3.49
custom:WeightedAverageRemainingContractualTermAbstract
Outstanding options, ending balance	5 years 6 months 18 days
Options exercisable	4 years 10 months 13 days