Note 11 - Warrants (Details) - Summary of Warrant Activity (USD $)	1 Months Ended	9 Months Ended
	Sep. 30, 2009	Sep. 30, 2013	May 30, 2013	Feb. 26, 2013
Note 11 - Warrants (Details) - Summary of Warrant Activity [Line Items]
Warrants outstanding at December 31, 2012		1,747,478	1,398,816
Warrants outstanding at December 31, 2012 (in Dollars per Item)		15.17		5.31
Warrants granted in connection with the Preferred Stock Offering, as more fully described in Note 9		111
Warrants exercised for common stock		(15,833)
Warrants exercised for common stock (in Dollars per share)		$ 14.63
Warrants outstanding at September 30, 2013		3,073,027	1,398,816
Warrants outstanding at September 30, 2013 (in Dollars per Item)		10.89		5.31
Weighted average remaining contractual terms (in years)	66 months	3 years 255 days
Warrant [Member]
Note 11 - Warrants (Details) - Summary of Warrant Activity [Line Items]
Warrants granted in connection with the Preferred Stock Offering, as more fully described in Note 9		1,341,382
Warrants granted in connection with the Preferred Stock Offering, as more fully described in Note 9 (in Dollars per share)		$ 5.31