7. SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Feb. 28, 2014	Feb. 28, 2013	Feb. 28, 2014	Feb. 28, 2013	May 31, 2013
Net sales	$ 5,612	$ 3,340	$ 14,314	$ 13,226
Property and equipment, net	311	378	311	378	301	[1]
US
Net sales	2,863	2,100	7,082	6,095
Property and equipment, net	268	321	268	321
Asia
Net sales	1,039	1,188	4,963	6,546
Property and equipment, net	42	57	42	57
Europe
Net sales	1,710	52	2,269	585
Property and equipment, net	$ 1	$ 0	$ 1	$ 0

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