NET (LOSS) INCOME PER COMMON SHARE (Details) - USD ($)	3 Months Ended		6 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2015	Nov. 30, 2014
NET (LOSS) INCOME PER COMMON SHARE {1}
Options to purchase common shares were anti-dilutive	$ 1,619	$ 2,368	$ 619	$ 1,184