Consolidated Balance Sheet (Parenthetical) (USD $)	May 29, 2012	May 31, 2011
Statement of Financial Position [Abstract]
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, no par value
Preferred stock, shares issued	0	0
Common stock, shares authorized	12,000,000	12,000,000
Common stock, no par value
Common stock, shares issued	7,586,764	7,586,764
Common stock, stated value	$ 1	$ 1
Treasury stock, shares	2,648,158	2,666,956