13. SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	May 31, 2014	Feb. 28, 2014	Nov. 30, 2013	Aug. 31, 2013	May 31, 2013	Feb. 28, 2013	Nov. 30, 2012	Aug. 31, 2012	May 31, 2014	May 31, 2013	May 31, 2012
Net Sales	$ 5,370	$ 5,612	$ 4,950	$ 3,752	$ 3,262	$ 3,340	$ 5,054	$ 4,832	$ 19,684	$ 16,488	$ 15,521
Property and equipment, net	474				301				474	301	510
US
Net Sales									8,708	7,379	9,560
Property and equipment, net	415				249				415	249	441
Asia
Net Sales									7,453	8,184	4,276
Property and equipment, net	42				52				42	52	66
Europe
Net Sales									3,523	925	1,685
Property and equipment, net	$ 17				$ 0				$ 17	$ 0	$ 3