Significant Accounting Policies (Details) - Options Activity	9 Months Ended
	Feb. 28, 2019 $ / shares shares
Options Activity [Abstract]
Options Outstanding, Shares | shares	1,138,625
Option Outstanding, Exercise Price Weighted Average | $ / shares	$ 1.65
Option Granted, Shares | shares	524,000
Option Granted, Exercise Price Weighted Average | $ / shares	$ 2.61
Options Exercised, Shares | shares	(109,500)
Options Exercised, Exercise Price Weighted Average | $ / shares	$ 0.77
Options Cancelled or expired, Shares | shares	(44,250)
Cancelled or expired, Exercise Price Weighted Average | $ / shares	$ 2.12
Options Outstanding, Shares | shares	1,508,875
Options Outstanding, Exercise Price Weighted Average | $ / shares	$ 2.04