Note 9 - Common Stock Cash Dividends (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
	Jan. 26, 2013	Jan. 26, 2013
Common Stock, Dividends, Per Share, Declared (in Dollars per share)	$ 2.55
Dividends, Common Stock	$ 118,100	$ (118,139)