Note 8 - Warrants to Purchase Common Stock (Details) (USD $)	9 Months Ended
	Sep. 30, 2014
Option outstanding, Begining balance	8,315,958
Option Granted	1,329,000
Option Exercised
Option Cancelled	(2,668,895)
Option outstanding, Ending balance	6,976,063
Options exercisable at End	5,968,002
Outstanding at Beginning, Weighted-Average Exercise Price	$ 0.42
Weighted- Average Exercise Price, Granted	$ 0.25
Weighted- Average Exercise Price, Exercised
Weighted- Average Exercise Price, Cancelled	$ 0.47
Outstanding at Ending, , Weighted-Average Exercise Price	$ 0.26
Weighted- Average exercisable at End	$ 0.36
Weighted- Average Remaining Contractual Term, Beginning balance	9 years 1 month 2 days
Weighted- Average Remaining Contractual Term, Granted	9 years 2 months 27 days
Weighted- Average Remaining Contractual Term, Ending Balance	8 years 4 months 2 days
Weighted- Average Remaining Contractual Term, exercisable at End	8 years 6 months 29 days
Warrant [Member]
Option outstanding, Begining balance	10,486,066
Option Granted	4,434,343
Option Exercised
Option Cancelled	(61,397)
Option outstanding, Ending balance	14,859,012
Options exercisable at End	14,859,012
Outstanding at Beginning, Weighted-Average Exercise Price	$ 0.98
Weighted- Average Exercise Price, Granted	$ 0.40
Weighted- Average Exercise Price, Exercised
Weighted- Average Exercise Price, Cancelled	$ 3.00
Outstanding at Ending, , Weighted-Average Exercise Price	$ 0.80
Weighted- Average exercisable at End	$ 0.80
Weighted- Average Remaining Contractual Term, Beginning balance	9 months 29 days
Weighted- Average Remaining Contractual Term, Granted	4 years 8 months 23 days
Weighted- Average Remaining Contractual Term, Ending Balance	1 year 10 months 2 days
Weighted- Average Remaining Contractual Term, exercisable at End	1 year 10 months 2 days