Note 11 - Warrants to Purchase Common Stock (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Outstanding at Beginning, Weighted-Average Exercise Price	$ 0.34	$ 0.32
Granted, Weighted-Average Exercise Price	$ 0.48	$ 0.35
Outstanding at Ending, , Weighted-Average Exercise Price	$ 0.42	$ 0.34
Outstanding at Beginning, Weighted-Average Remaining Contractual Term	8 years 3 months 18 days	6 years 29 days
Granted, Weighted-Average Remaining Contractual Term	9 years 10 months 13 days	9 years 7 months 6 days
Warrant [Member]
Outstanding at Beginning, Shares	661,947	80,950
Granted, Shares	9,887,169	580,997
Expired, Shares	(63,050)
Outstanding at Ending, Shares	10,486,066	661,947
Exercisable at December 31, 2013,Shares	10,486,066
Outstanding at Beginning, Weighted-Average Exercise Price	$ 0.80	$ 3.00
Granted, Weighted-Average Exercise Price	$ 1.00	$ 0.70
Expired, Weighted-Average Exercise Price	$ 3.00
Outstanding at Ending, , Weighted-Average Exercise Price	$ 1.00	$ 0.80
Exercisable at December 31, 2013, Weighted-Average Exercise Price	$ 1.00
Outstanding at Beginning, Weighted-Average Remaining Contractual Term	2 years 1 month 24 days	9 months
Granted, Weighted-Average Remaining Contractual Term	1 year 4 months 10 days	1 year 4 months 6 days
Expired, Weighted-Average Remaining Contractual Term
Outstanding at Ending, Weighted-AverageRemaining Contractual Term	1 year 4 months 10 days	1 year 3 months 22 days
Exercisable at December 31, 2013, Weighted-AverageRemaining Contractual Term	1 year 4 months 10 days