FOREIGN CURRENCY TRANSLATION (Details) - USD ($)	3 Months Ended		9 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	Feb. 29, 2016	Feb. 28, 2015
FOREIGN CURRENCY TRANSLATION DETAILS
Net (gain) loss from foreign currency related transactions	$ (12,000)	$ 55,000	$ 4,000	$ 98,000