Net Sales and Gross Profit by Geographic Region (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2013	Sep. 01, 2012
Segment Reporting Information [Line Items]
Net Sales	$ 34,257	$ 35,650
Total, Gross Profit	10,192	10,646
North America
Segment Reporting Information [Line Items]
Net Sales	14,109	15,738
Total, Gross Profit	4,935	5,288
Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	6,305	6,347
Total, Gross Profit	1,943	2,193
Europe
Segment Reporting Information [Line Items]
Net Sales	11,489	10,744
Total, Gross Profit	3,595	3,226
Latin America
Segment Reporting Information [Line Items]
Net Sales	2,197	2,447
Total, Gross Profit	822	828
Other
Segment Reporting Information [Line Items]
Net Sales	157	374
Total, Gross Profit	$ (1,103)	$ (889)