10. CAPITAL STOCK (Details Narrative) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2014
Total intrinsic values of options exercised	$ 185	$ 540	$ 520
Weighted average contractual life of the options exercisable and expected to be exercisable	4 years 29 days
Exercisable options to purchase	2,390,000	2,189,000	1,892,000
Weighted average exercise prices	$ 3.69	$ 1.43	$ 1.22
RSUs granted	35,000	0	0
Market value on the date of the grant	$ 2.16
Intrinsic value of RSUs	$ 35,000
2006 Equity Incentive Plan
Authorized Shares	5,083,000
Outstanding Shares	3,201,000