Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Aug. 27, 2016	May 28, 2016
Allowance for doubtful accounts	$ 944	$ 727
Common stock, shares outstanding	48,533
Treasury stock, shares	26,527	26,524
Common Stock [Member]
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	120,000	120,000
Common stock, shares issued	70,261	70,261
Common stock, shares outstanding	43,733	43,737
Class A Common Stock [Member]
Common stock, par value per share	$ 0.01	$ 0.01
Common stock, shares authorized	4,800	4,800
Common stock, shares issued	4,800	4,800
Common stock, shares outstanding	4,800	4,800