Note 9 - Stock Warrants (Details) - Stock Warrants Activity (USD $)	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Feb. 08, 2013	Dec. 08, 2010
Stock Warrants Activity [Abstract]
Beginning balance	782,259	1,235,877	427,713
Beginning balance (in Dollars per Item)	0.85	0.35	0.55	1.21
Stock warrants granted	0	0
Stock warrants granted (in Dollars per share)	$ 0	$ 0
Stock warrants expired	0	0
Stock warrants expired (in Dollars per share)	$ 0	$ 0
Stock warrants exercised	(427,713)
Stock warrants exercised (in Dollars per share)	$ 0.55
Ending balance	354,546	1,235,877	427,713
Ending balance (in Dollars per Item)	1.21	0.35	0.55	1.21