SIGNIFICANT ACCOUNTING POLICIES (Details) - Options Activity - Share-Based Payment Arrangement, Option [Member]	3 Months Ended
	Aug. 31, 2022 $ / shares shares
SIGNIFICANT ACCOUNTING POLICIES (Details) - Options Activity [Line Items]
Options Outstanding, Shares | shares	2,321,616
Option Outstanding, Exercise Price Weighted Average | $ / shares	$ 3.72
Option Granted, Shares | shares	146,000
Option Granted, Exercise Price Weighted Average | $ / shares	$ 3.37
Option Exercised, Shares | shares	(15,000)
Option Exercised, Exercise Price Weighted Average | $ / shares	$ 0.95
Option Cancelled or expired, Shares | shares	(64,000)
Option Cancelled or expired, Exercise Price Weighted Average | $ / shares	$ 4.78
Options Outstanding, Shares | shares	2,388,616
Option Outstanding, Exercise Price Weighted Average | $ / shares	$ 3.69