Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Feb. 26, 2022	May 29, 2021
Allowance for accounts receivable	$ 149	$ 202
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred Stock, issued (in shares)	0	0
Common Stock
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05
Common stock, issued (in shares)	11,608	11,160
Common stock, outstanding (in shares)	11,608	11,160
Common Class B
Common stock, par value (in dollars per share)	$ 0.05	$ 0.05
Common stock, issued (in shares)	2,053	2,097
Common stock, outstanding (in shares)	2,053	2,097