Note 11 - Warrants (Details) - Common Stock Warrant Liability (USD $)	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 May Offering [Member]	Jun. 03, 2013 May Offering [Member]
Note 11 - Warrants (Details) - Common Stock Warrant Liability [Line Items]
Common Stock Warrant Liability	$ 4,283,932		$ 9,110,302	$ 9,100,000
Gain from the adjustment for the change in fair value included in net income	(8,141,574)	1,250,850
Common Stock Warrant Liability	$ 5,252,660		$ 9,110,302	$ 9,100,000