Note 10 - Fair Value Measurements (Detail) - Schedule of fair value, assets and liabilties measured on recurring basis (USD $)	Sep. 30, 2012	Mar. 31, 2012
Total Assets	$ 0	$ 0
Warrant liability	198,903	355,290
Total Liabilities	198,903	355,290
Fair Value, Inputs, Level 1 [Member]
Total Assets	0	0
Warrant liability	0	0
Total Liabilities	0	0
Fair Value, Inputs, Level 2 [Member]
Total Assets	0	0
Warrant liability	0	0
Total Liabilities	0	0
Fair Value, Inputs, Level 3 [Member]
Total Assets	0	0
Warrant liability	198,903	355,290
Total Liabilities	$ 198,903	$ 355,290