Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Nov. 26, 2015	May. 28, 2015
Accounts and notes receivable, reserves	$ 254	$ 245
Preferred Stock, par (in dollars per share)	$ 1	$ 1
Preferred Stock, authorized	1,000,000	1,000,000
Preferred Stock, issued	0	0
Cost of Common Stock in treasury, shares	3,534,168	3,636,098
Common Stock [Member]
Common Stock, par (in dollars per share)	$ 1	$ 1
Common Stock, authorized	50,000,000	50,000,000
Common Stock, issued	22,478,541	22,478,541
Class B Common Stock [Member]
Common Stock, par (in dollars per share)	$ 1	$ 1
Common Stock, authorized	33,000,000	33,000,000
Common Stock, issued	8,710,972	8,710,972
Common Stock, outstanding	8,710,972	8,710,972