Net Sales and Gross Profit by Geographic Region (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 30, 2013	Dec. 01, 2012	Nov. 30, 2013	Dec. 01, 2012
Segment Reporting Information [Line Items]
Net Sales	$ 35,436	$ 36,603	$ 69,693	$ 72,253
Total, Gross Profit	11,007	10,742	21,199	21,388
North America
Segment Reporting Information [Line Items]
Net Sales	14,296	16,436	28,492	32,182
Total, Gross Profit	4,687	5,520	9,584	10,809
Asia Pacific
Segment Reporting Information [Line Items]
Net Sales	6,248	5,437	12,553	11,784
Total, Gross Profit	2,144	1,860	4,089	4,054
Europe
Segment Reporting Information [Line Items]
Net Sales	12,175	12,305	23,665	23,042
Total, Gross Profit	4,111	3,806	7,706	7,030
Latin America
Segment Reporting Information [Line Items]
Net Sales	2,574	2,320	4,771	4,767
Total, Gross Profit	1,011	788	1,834	1,616
Other
Segment Reporting Information [Line Items]
Net Sales	143	105	212	478
Total, Gross Profit	$ (946)	$ (1,232)	$ (2,014)	$ (2,121)