7. SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Aug. 31, 2012	Aug. 31, 2011	May 31, 2012
Net Sales	$ 4,832	$ 4,130
Property and equipment, net	439	827	510	[1]
United States
Net Sales	4,668	3,906
Property and equipment, net	369	745
Asia
Net Sales	34	26
Property and equipment, net	69	74
Europe
Net Sales	130	198
Property and equipment, net	$ 1	$ 8

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