Note 8 - Preferred Stock (Detail) (USD $)	6 Months Ended	9 Months Ended
	Dec. 31, 2012	Mar. 31, 2013
Series D Preferred Stock [Member]
Preferred Stock, Shares Outstanding (in Shares)		384,495
Preferred Stock, Redemption Price Per Share		$ 0.30
Preferred Stock, Dividend Rate, Percentage		10.00%
Preferred Stock, Conversion Feature, Common Stock Share Price, Trigger	$ 2.25
Convertible Preferred Stock, Shares Issued upon Conversion (in Shares)	2
Preferred Stock, Liquidation Preference Per Share	$ 0.60
Series E Preferred Stock [Member]
Preferred Stock, Shares Outstanding (in Shares)	862
Preferred Stock, Redemption Price Per Share	$ 0.65
Preferred Stock, Dividend Rate, Percentage		10.00%
Preferred Stock, Conversion Feature, Common Stock Share Price, Trigger	$ 2.25
Convertible Preferred Stock, Shares Issued upon Conversion (in Shares)	1,538.5
Preferred Stock, Liquidation Preference Per Share	$ 0.65