Note 11 - Warrants (Details) - Common Stock Warrant Liability (USD $)	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Note 11 - Warrants (Details) - Common Stock Warrant Liability [Line Items]
Common Stock Warrant Liability	$ 4,283,932
Gain from the adjustment for the change in fair value included in net income	(8,660,417)	369,723
Common Stock Warrant Liability	4,733,817
May Offering [Member]
Note 11 - Warrants (Details) - Common Stock Warrant Liability [Line Items]
Common Stock Warrant Liability	$ 9,110,302