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Note 7 - Diluted Net Income Per Share (Details)
3 Months Ended 9 Months Ended
Feb. 23, 2014
Feb. 24, 2013
Feb. 23, 2014
Feb. 24, 2013
Earnings Per Share [Abstract]        
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 342,500 95,527 332,037 88,128