Unaudited Consolidated Statement of Stockholders' Equity - 9 months ended Mar. 03, 2018 - USD ($) shares in Thousands, $ in Thousands	Common Stock [Member]	Class B Common [Member]	Par value [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Total
Beginning Balance at May. 27, 2017			$ 642	$ 59,436	$ 69,333	$ 2,916	$ 132,327
Beginning Balance (in shares) at May. 27, 2017	10,712	2,137
Comprehensive income
Net income					2,083		2,083
Foreign currency translation						3,997	3,997
Fair value adjustments on investments						(130)	(130)
Share-based compensation:
Restricted stock				57			57
Restricted stock - shares	78
Stock options				368			368
Common stock:
Options exercised			5	39			44
Options exercised (in shares)	6
Dividends paid to:
Common					(1,938)		(1,938)
Class B					(346)		(346)
Ending Balance at Mar. 03, 2018			$ 647	$ 59,900	$ 69,132	$ 6,783	$ 136,462
Ending Balance (in shares) at Mar. 03, 2018	10,796	2,137