7. SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Nov. 30, 2014	Nov. 30, 2013	Nov. 30, 2014	Nov. 30, 2013	May 31, 2014
Net sales	$ 2,615	$ 4,950	$ 6,173	$ 8,702
Property and equipment, net	538	249	538	249	474	[1]
US
Net sales	707	2,881	2,370	4,219
Property and equipment, net	488	206	488	206
Asia
Net sales	1,780	1,608	2,866	3,924
Property and equipment, net	35	42	35	42
Europe
Net sales	128	461	937	559
Property and equipment, net	$ 15	$ 1	$ 15	$ 1

[1] The condensed consolidated balance sheet at May 31, 2014 has been derived from the audited consolidated financial statements at that date.