Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Aug. 25, 2011	May 26, 2011
Accounts and notes receivable, reserves	$ 937	$ 880
Preferred Stock, par	$ 1	$ 1
Preferred Stock, authorized	1,000,000	1,000,000
Preferred Stock, issued	0	0
Cost of Common Stock in treasury, shares	1,834,262	1,453,167
Common Stock
Common Stock, par	$ 1	$ 1
Common Stock, authorized	50,000,000	50,000,000
Common Stock, issued	22,356,196	22,356,196
Class B Common Stock
Common Stock, par	$ 1	$ 1
Common Stock, authorized	33,000,000	33,000,000
Common Stock, issued	8,833,317	8,833,317
Common Stock, outstanding	8,833,317	8,833,317