Segment Reporting - Schedule of Net Sales and Gross Profit by Geographic Region (Details) - USD ($) $ in Thousands		3 Months Ended
		Aug. 29, 2020	Aug. 31, 2019
Segment Reporting Information [Line Items]
Net Sales		$ 38,812	$ 40,653
Gross Profit		12,359	12,951
North America
Segment Reporting Information [Line Items]
Net Sales		16,129	17,234
Gross Profit		6,017	6,307
Asia/Pacific
Segment Reporting Information [Line Items]
Net Sales		10,035	8,523
Gross Profit		3,078	2,593
Europe
Segment Reporting Information [Line Items]
Net Sales		10,687	12,924
Gross Profit		3,356	4,131
Latin America
Segment Reporting Information [Line Items]
Net Sales		1,927	1,978
Gross Profit		662	700
Other
Segment Reporting Information [Line Items]
Net Sales	[1]	34	(6)
Gross Profit	[1]	$ (754)	$ (780)

[1] Other includes primarily net sales not allocated to a specific geographical region, unabsorbed value-add costs and other unallocated expenses.