Note 7 - Diluted Net Income Per Share (Detail) - The following table sets forth the computation of diluted net income per share (in thousands, except (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 25, 2012	Nov. 27, 2011	Nov. 25, 2012	Nov. 27, 2011
Net income applicable to Common Stockholders (in Dollars)	$ 8,913	$ 3,340	$ 13,279	$ 5,152
Weighted average shares for basic net income per share	25,747	25,885	25,709	26,147
Effect of dilutive securities:
Stock options and restricted stock units (in Dollars)	$ 792	$ 250	$ 678	$ 252
Weighted average shares for diluted net income per share	26,539	26,135	26,387	26,399
Diluted net income per share (in Dollars per share)	$ 0.34	$ 0.13	$ 0.50	$ 0.20