Note 5 - Stockholders' Equity (Detail) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended		3 Months Ended		12 Months Ended
	Jun. 30, 2012	May 31, 2012	Aug. 31, 2012	May 31, 2012	Feb. 29, 2008
Stock Repurchase Program, Authorized Amount (in Dollars)					$ 3.0
Stock Repurchased During Period, Shares (in Shares)	129,500	33,800
Treasury Stock Acquired, Average Cost Per Share	$ 10.45	$ 10.73
Common Stock, Dividends, Per Share, Cash Paid			$ 0.11	$ 0.10
Common Stock, Dividends, Per Share, Declared			$ 0.11