Consolidated Statements of Comprehensive Income (USD $)	3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended		3 Months Ended		6 Months Ended
	Nov. 30, 2013	Dec. 01, 2012	Nov. 30, 2013	Dec. 01, 2012	Nov. 30, 2013 Common Stock	Dec. 01, 2012 Common Stock	Nov. 30, 2013 Common Stock	Dec. 01, 2012 Common Stock	Nov. 30, 2013 Class B Common Stock	Dec. 01, 2012 Class B Common Stock	Nov. 30, 2013 Class B Common Stock	Dec. 01, 2012 Class B Common Stock
Net Sales	$ 35,436,000	$ 36,603,000	$ 69,693,000	$ 72,253,000
Cost of Sales	24,429,000	25,861,000	48,494,000	50,865,000
Gross profit	11,007,000	10,742,000	21,199,000	21,388,000
Selling, general, and administrative expenses	10,473,000	10,228,000	20,542,000	20,377,000
Loss on disposal of assets	0	2,000	0	(2,000)
Operating income	534,000	512,000	657,000	1,013,000
Other (income) expense:
Investment/interest income	(255,000)	(352,000)	(520,000)	(735,000)
Foreign exchange (gain) loss	(14,000)	297,000	92,000	260,000
Other, net	15,000	(42,000)	(15,000)	(65,000)
Total other income	(254,000)	(97,000)	(2,558,000)	(540,000)
Income from continuing operations before income taxes	788,000	609,000	3,215,000	1,553,000
Income tax provision	157,000	28,000	605,000	238,000
Income from continuing operations	631,000	581,000	2,610,000	1,315,000
Loss from discontinued operations, net of tax	(107,000)	(203,000)	(118,000)	(290,000)
Net income	524,000	378,000	2,492,000	1,025,000
Foreign currency translation gain, net of tax	1,196,000	1,547,000	1,621,000	1,947,000
Fair value adjustments on investments	22,000	4,000	23,000	5,000
Comprehensive income	$ 1,742,000	$ 1,929,000	$ 4,136,000	$ 2,977,000
Net income per common share-Basic:
Income from continuing operations					$ 0.05	$ 0.04	$ 0.19	$ 0.09	$ 0.04	$ 0.03	$ 0.17	$ 0.08
Income (loss) from discontinued operations					$ (0.01)	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.01)	$ (0.01)	$ (0.01)	$ (0.02)
Total net income per common share-Basic:					$ 0.04	$ 0.03	$ 0.18	$ 0.07	$ 0.03	$ 0.02	$ 0.16	$ 0.06
Net income per Common share - Diluted:
Income from continuing operations					$ 0.04	$ 0.04	$ 0.18	$ 0.08	$ 0.04	$ 0.03	$ 0.17	$ 0.08
Income (loss) from discontinued operations					$ (0.01)	$ (0.01)	$ (0.01)	$ (0.02)	$ (0.01)	$ (0.01)	$ (0.01)	$ (0.02)
Total net income per Common share - Diluted:					$ 0.03	$ 0.03	$ 0.17	$ 0.06	$ 0.03	$ 0.02	$ 0.16	$ 0.06
Weighted average number of shares:
Common shares - Basic					11,871,000	12,437,000	11,997,000	12,604,000	2,191,000	2,812,000	2,309,000	2,863,000
Common shares - Diluted					14,185,000	15,345,000	14,433,000	15,567,000	2,191,000	2,812,000	2,309,000	2,863,000
Dividends per common share					$ 0.060	$ 0.060	$ 0.120	$ 0.120	$ 0.054	$ 0.054	$ 0.108	$ 0.108