7. SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2013	Nov. 30, 2012	May 31, 2013
Net sales	$ 4,950	$ 5,054	$ 8,702	$ 9,886
Property and equipment, net	249	358	249	358	301	[1]
US
Net sales	2,881	701	4,219	3,995
Property and equipment, net	206	293	206	293
Asia
Net sales	1,608	4,016	3,924	5,358
Property and equipment, net	42	64	42	64
Europe
Net sales	461	337	559	533
Property and equipment, net	$ 1	$ 1	$ 1	$ 1

[1] The condensed consolidated balance sheet at May 31, 2013 has been derived from the audited consolidated financial statements at that date.