Audited Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Jun. 02, 2018	May 27, 2017
Allowance for accounts receivable	$ 309	$ 398
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred Stock, issued (in shares)	0	0
Common stock in treasury (in shares)	0	0
Common Stock [Member]
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05
Common stock, issued (in shares)	10,806	10,712
Common stock, outstanding (in shares)	10,806	10,712
Common Class B [Member]
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05
Common stock, issued (in shares)	2,137	2,137
Common stock, outstanding (in shares)	2,137	2,137