7. INCOME TAXES (Details) - USD ($) $ in Thousands	12 Months Ended
	May. 31, 2015	May. 31, 2014	May. 31, 2013
Components of Loss Before Income Tax Benefit (Expense)
Domestic	$ (6,871)	$ 438	$ (3,392)
Foreign	258	(31)	3
(Loss) income before income tax (expense) benefit	$ (6,613)	$ 407	$ (3,389)