Note 9 - Subsequent Event (Details Textual)	1 Months Ended
	May 12, 2021 CAD ($) $ / shares shares
Warrants Issued in Connection with Private Placement [Member]
Equity Offering, Number of Warrants Per Unit (in shares)	1
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)	1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares	$ 1
Warrants and Rights Outstanding, Term (Year)	2 years
Class of Warrant of Right, Stock Price Trigger (in CAD per share) | $ / shares	$ 2.50
Class of Warrant or Right, Threshold Consecutive Trading Days	10
Private Placement [Member]
Equity Offering, Number of Units Issued (in shares)	4,900,000
Equity Offering, Price Per Unit Issued (in CAD per share) | $ / shares	$ 0.80
Proceeds from Issuance or Sale of Equity, Total | $	$ 3,920,000
Equity Offering, Number of Common Shares Per Unit (in shares)	1