Unaudited Consolidated Statements of Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 28, 2020	Nov. 30, 2019	Nov. 28, 2020	Nov. 30, 2019
Net sales	$ 42,418	$ 39,634	$ 81,230	$ 80,287
Cost of sales	28,075	26,954	54,528	54,656
Gross profit	14,343	12,680	26,702	25,631
Selling, general and administrative expenses	13,491	13,161	26,467	26,008
Loss on disposal of assets				1
Operating income (loss)	852	(481)	235	(378)
Other expense (income):
Investment/interest income	(15)	(123)	(33)	(243)
Foreign exchange loss	143	199	585	89
Other, net	(18)	(15)	(36)	(16)
Total other expense (income)	110	61	516	(170)
Income (loss) before income taxes	742	(542)	(281)	(208)
Income tax provision	53	80	177	257
Net income (loss)	689	(622)	(458)	(465)
Foreign currency translation gain (loss), net of tax	477	222	2,613	(494)
Comprehensive income (loss)	$ 1,166	$ (400)	$ 2,155	$ (959)
Weighted average number of shares:
Common shares - Diluted	13,225	13,135	13,187	13,111
Common Stock
Net income (loss) per share
Common shares - Basic	$ 0.05	$ (0.05)	$ (0.04)	$ (0.04)
Common shares - Diluted	$ 0.05	$ (0.05)	$ (0.04)	$ (0.04)
Weighted average number of shares:
Common shares - Basic	11,111	11,038	11,090	11,014
Common shares - Diluted	11,128	11,038	11,090	11,014
Dividends per share	$ 0.060	$ 0.060	$ 0.120	$ 0.120
Common Class B
Net income (loss) per share
Common shares - Basic	0.05	(0.04)	(0.03)	(0.03)
Common shares - Diluted	$ 0.05	$ (0.04)	$ (0.03)	$ (0.03)
Weighted average number of shares:
Common shares - Basic	2,097	2,097	2,097	2,097
Common shares - Diluted	2,097	2,097	2,097	2,097
Dividends per share	$ 0.054	$ 0.054	$ 0.108	$ 0.108