Note 1 - Nature and Continuance of Operations (Details Textual) - CAD ($)			1 Months Ended	9 Months Ended	12 Months Ended
	Dec. 20, 2018	Jun. 07, 2018	Nov. 30, 2018	Feb. 28, 2019	May 31, 2018
Working Capital				$ 5,514,929	$ 2,562,047
Proceeds from Issuance of Private Placement	$ 2,080,000	$ 4,500,002
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period			4,036,900	4,036,900	256,660
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price			$ 0.86	$ 0.86	$ 0.66
Proceeds from Stock Options Exercised			$ 3,453,924
Private Placement [Member]
Stock Issued During Period, Shares, New Issues	800,000	1,730,770
Shares Issued, Price Per Share	$ 2.60	$ 2.60
Proceeds from Issuance of Private Placement		$ 4,500,002