CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	AOCI Attributable to Parent [Member]	Retained Earnings [Member]	Total
Balances at May. 31, 2015	$ 605,336	$ 18,326,890	$ (12,264)	$ (13,319,442)	$ 5,600,520
Balances (in Shares) at May. 31, 2015	7,566,714
Exercise of stock options	$ 21,570	88,366			$ 109,936
Exercise of stock options (in Shares)	269,625				269,625
Foreign currency translation			(1,322)		$ (1,322)
Private Placement, net of costs	$ 26,667	969,311			995,978
Private Placement, net of costs (in Shares)	333,334
Compensation expense in connection with options granted		15,153			15,153
Net loss				(1,499,787)	(1,499,787)
Balances at May. 31, 2016	$ 653,573	19,399,720	(13,586)	(14,819,229)	5,220,478
Balances (in Shares) at May. 31, 2016	8,169,673
Exercise of stock options	$ 27,320	130,408			$ 157,728
Exercise of stock options (in Shares)	341,500				341,500
Foreign currency translation			(2,248)		$ (2,248)
Compensation expense in connection with options granted		21,727			21,727
Net loss				(908,561)	(908,561)
Balances at May. 31, 2017	$ 680,893	$ 19,551,855	$ (15,834)	$ (15,727,790)	$ 4,489,124
Balances (in Shares) at May. 31, 2017	8,511,173