7. INCOME TAXES (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	May 31, 2013	May 31, 2012	May 31, 2011
Components of Income Tax (Expense) Benefit:
Current	$ 0	$ 0	$ 0
Deferred	0	0	0
State income taxes:
Current	(21)	(12)	(30)
Deferred	0	0	0
Foreign income taxes:
Current	(9)	27	79
Deferred	0	0	0
Income tax (expense) benefit	$ (30)	$ 15	$ 49