1. Summary of Significant Accounting Policies (Details-Options outstanding) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Number of Shares
Outstanding options, beginning balance	10,828
Granted	0
Exercised	(209)		(574)
Forfeited	0
Outstanding options, ending balance	10,619
Options exercisable	5,932
Weighted Average Exercise Price
Outstanding options, beginning balance	$ 4.05
Granted
Exercised	$ 1.34
Forfeited
Outstanding options, ending balance	$ 4.11
Options exercisable	$ 2.83
Weighted Average Remaining Contractual Term
Outstanding options, ending balance	5 years 9 months 29 days	[1]
Options exercisable	4 years 10 months 17 days

[1] 6 years and 4days at the beginning of the period.