Stock Based Compensation (Summary Of Restricted Share Activity) (Details)	9 Months Ended
	Feb. 27, 2016 $ / shares shares
Stock Based Compensation [Abstract]
Number of Shares, Outstanding, May 30, 2015 | shares	335,140
Number of Shares, Granted | shares	78,560
Number of Shares, Vested | shares	(121,250)
Number of Shares, Forfeited | shares	(1,850)
Number of Shares, Outstanding, February 27, 2016 | shares	290,600
Weighted Average Grant Date Fair Value, Outstanding, May 30, 2015 | $ / shares	$ 27.24
Weighted Average Grant Date Fair Value, Granted | $ / shares	49.39
Weighted Average Grant Date Fair Value, Vested | $ / shares	20.70
Weighted Average Grant Date Fair Value, Forfeited | $ / shares	30.76
Weighted Average Grant Date Fair Value, Outstanding, February 27, 2016 | $ / shares	$ 35.94