Note 9 - Common Stock and Warrants (Detail) (USD $)	0 Months Ended			1 Months Ended				6 Months Ended	12 Months Ended	72 Months Ended
	Dec. 14, 2011	Jul. 08, 2011	Jun. 04, 2009	Oct. 31, 2012	Nov. 30, 2011	Jul. 08, 2011	Oct. 31, 2007	Dec. 14, 2011	Dec. 31, 2011	Jun. 30, 2011	Oct. 19, 2010	Jun. 30, 2009
Stock Issued During Period, Shares, New Issues		363,636			666,667	363,636	300,000	570,000
Accrued Professional Fees (in Dollars)			$ 500,000									$ 500,000
Share-based Goods and Nonemployee Services Transaction, Quantity of Securities Issued			59,312							72,782
Common Stock Price Per Share (in Dollars per share)			$ 8.43
Stock Covered By Registration Statement (in Dollars)										50,000,000
Proceeds from Issuance or Sale of Equity (in Dollars)					6,000,000	4,000,000
Sale of Stock, Price Per Share (in Dollars per share)	$ 9	$ 11			$ 9	$ 11		$ 9
Proceeds from Issuance of Common Stock (in Dollars)	5,100,000	4,000,000						5,100,000	15,129,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights				250,000	1
Common Stock Shares Available for Warrants Exercised					1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)				10	13
Line of Credit Facility, Maximum Borrowing Capacity (in Dollars)				$ 5,000,000							$ 10,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period				2 years
Private Placement [Member]
Stock Issued During Period, Shares, New Issues					3
Sale of Stock, Price Per Share (in Dollars per share)					$ 9
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item)					13