GEOGRAPHICAL INFORMATION - REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2015	Nov. 30, 2014
Revenues:
North America	$ 1,043	$ 859	$ 1,818	$ 1,541
Europe	274	177	482	366
Asia	3		6
Eliminations	(16)	(9)	(21)	(16)
Consolidated Total	$ 1,304	$ 1,027	$ 2,285	$ 1,891