7. SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Feb. 28, 2015	Feb. 28, 2014	Feb. 28, 2015	Feb. 28, 2014	May 31, 2014
Net sales	$ 2,027	$ 5,612	$ 8,200	$ 14,314
Property and equipment, net	502	311	502	311	474	[1]
US
Net sales	684	2,863	3,054	7,082
Property and equipment, net	455	268	455	268
Asia
Net sales	979	1,039	3,845	4,963
Property and equipment, net	35	42	35	42
Europe
Net sales	364	1,710	1,301	2,269
Property and equipment, net	$ 12	$ 1	$ 12	$ 1

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