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7. INCOME TAXES (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
May 31, 2014
May 31, 2013
May 31, 2012
Components of Income (Loss) Before Income Tax Benefit (Expense)      
Domestic $ 438 $ (3,392) $ (3,590)
Foreign (31) 3 186
Income (loss) before income tax benefit (expense) $ 407 $ (3,389) $ (3,404)