7. SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Feb. 28, 2013	Feb. 29, 2012	Feb. 28, 2013	Feb. 29, 2012	May 31, 2012
Net Sales	$ 3,340	$ 2,855	$ 13,226	$ 10,845
Property and equipment, net	378	587	378	587	510	[1]
US
Net Sales	2,100	2,184	6,095	7,076
Property and equipment, net	321	517	321	517
Asia
Net Sales	1,188	151	6,546	2,338
Property and equipment, net	57	66	57	66
Europe
Net Sales	52	520	585	1,431
Property and equipment, net	$ 0	$ 4	$ 0	$ 4

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