Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Feb. 27, 2016	May. 30, 2015
Accounts receivable, allowance	$ 362	$ 283
Preferred stock, par value	$ 1.00	$ 1.00
Common Stock [Member]
Common stock, par value	$ 0.05	$ 0.05
Common stock, shares issued	10,703	11,530
Common stock, shares outstanding	10,703	11,530
Common Class B [Member]
Common stock, par value	$ 0.05	$ 0.05
Common stock, shares issued	2,141	2,141
Common stock, shares outstanding	2,141	2,141