Audited Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Class B	Common Stock	Par value	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income
Beginning Balance at May. 28, 2016	$ 141,675			$ 642	$ 58,969	$ 79,292	$ 2,772
Beginning Balance (in shares) at May. 28, 2016		2,141,000	10,703,000
Comprehensive (loss) income
Net (loss) income	(6,928)					(6,928)
Foreign currency translation	90						90
Fair value adjustments on investments	54						54
Share-based compensation:
Stock options	437				437
Options exercised	30				30
Options exercised (in shares)			5,000
Converted Class B to common (in shares)		(4,000)	4,000
Dividends paid to:
Common ($0.24 per share)	(2,567)					(2,567)
Class B ($0.22 per share)	(464)					(464)
Ending Balance at May. 27, 2017	132,327			642	59,436	69,333	2,916
Ending Balance (in shares) at May. 27, 2017		2,137,000	10,712,000
Comprehensive (loss) income
Net (loss) income	3,822					3,822
Foreign currency translation	1,580						1,580
Fair value adjustments on investments	(130)						(130)
Share-based compensation:
Restricted stock	98				98
Stock options	435				435
Options exercised	97			1	96
Options exercised (in shares)			16,000
Restricted stock issuance				4	(4)
Restricted stock issuance (in shares)			78,000
Dividends paid to:
Common ($0.24 per share)	(2,586)					(2,586)
Class B ($0.22 per share)	(462)					(462)
Ending Balance at Jun. 02, 2018	135,181			647	60,061	70,107	4,366
Ending Balance (in shares) at Jun. 02, 2018		2,137,000	10,806,000
Comprehensive (loss) income
Net (loss) income	(7,328)					(7,328)
Foreign currency translation	(1,976)						(1,976)
Share-based compensation:
Restricted stock	313				313
Stock options	384				384
Options exercised	$ 259			2	257
Options exercised (in shares)	46,000		46,000
Restricted stock issuance				3	(3)
Restricted stock issuance (in shares)			65,000
Converted Class B to common (in shares)		(40,000)	40,000
Dividends paid to:
Common ($0.24 per share)	$ (2,621)					(2,621)
Class B ($0.22 per share)	(455)					(455)
Ending Balance at Jun. 01, 2019	$ 123,757			$ 652	$ 61,012	$ 59,703	$ 2,390
Ending Balance (in shares) at Jun. 01, 2019		2,097,000	10,957,000