STOCK-BASED COMPENSATION NARRATIVE (Details)	12 Months Ended
	May. 31, 2015 USD ($) $ / shares	May. 31, 2014 USD ($) $ / shares
STOCK-BASED COMPENSATION NARRATIVE DETAILS
Company expenesd stock based compensation	$ 115,000	$ 15,000
Unrecorded stock-based compensation	$ 112,000
Unrecorded stock-based compensation will be recognized over the years	1.6
Weighted average fair value range minimum | $ / shares	$ 0.87
Weighted average fair value range maximum | $ / shares	$ 1.29	$ 1.73