7. SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 30, 2012	Nov. 30, 2011	Nov. 30, 2012	Nov. 30, 2011	May 31, 2012
Net Sales	$ 5,054	$ 3,860	$ 9,886	$ 7,990
Property and equipment, net	358	707	358	707	510	[1]
US
Net Sales	701	2,054	3,995	4,892
Property and equipment, net	293	630	293	630
Asia
Net Sales	4,016	1,370	5,358	2,187
Property and equipment, net	64	71	64	71
Europe
Net Sales	337	436	533	911
Property and equipment, net	$ 1	$ 6	$ 1	$ 6

[1] The condensed consolidated balance sheet at May 31, 2012 has been derived from the audited consolidated financial statements at that date.