Note 14 - Subscription Agreements (Detail) (USD $)	6 Months Ended	1 Months Ended
	Sep. 30, 2012	Nov. 15, 2012 Subsequent Event [Member]	Oct. 31, 2012 Subsequent Event [Member]
Equity Purchase Commitment, Value (in Dollars)	$ 500,000
Sale of Stock, Price Per Share (in Dollars per share)	$ 3.60
Stock Issued During Period, Value, Restricted Stock Award, Gross (in Dollars)	$ 300,000		$ 200,000
Stock Issued During Period, Shares, Restricted Stock Award, Gross	83,333
Number of Investors	3
Stock Issued During Period, Shares, Issued for Cash		500,000
Stock Issued During Period, Shares, New Issues		149,254
Share Price (in Dollars per share)		$ 3.35