Note 2 - Basis of Presentation and Summary of Significant Accounting Policies (Details) - Option Activity (USD $)	6 Months Ended
	Jun. 30, 2013
Option Activity [Abstract]
Outstanding as of December 31, 2012	2,184,583
Outstanding as of December 31, 2012 (in Dollars per share)	$ 2.20
Granted	1,552,500
Granted (in Dollars per share)	$ 0.23
Cancelled/forfeited	(309,377)
Cancelled/forfeited (in Dollars per share)	$ 0.70
Outstanding as of June 30, 2013	3,427,706
Outstanding as of June 30, 2013 (in Dollars per share)	$ 1.44
Outstanding as of June 30, 2013	7 years 219 days
Exercisable as of June 30, 2013	1,703,690
Exercisable as of June 30, 2013 (in Dollars per share)	$ 2.55
Exercisable as of June 30, 2013	6 years