12. OTHER (EXPENSE) INCOME, NET (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Other Expense Income Net Details
Dividend distribution on long-term investment	$ 0	$ 0	$ 575
Foreign exchange (loss) gain	(36)	117	135
Other, net	3	0	52
Other (expense) income, net	$ (33)	$ 117	$ 762