Note 6 - Common Stock (Details Textual) $ / shares in Units, $ / shares in Thousands				9 Months Ended
	Jun. 14, 2021 USD ($) shares	Jun. 14, 2021 CAD ($) $ / shares shares	Jun. 05, 2020 $ / shares shares	Sep. 30, 2021 USD ($) $ / shares shares	Sep. 30, 2020 USD ($)	Dec. 31, 2020 $ / shares shares
Common Stock, No Par Value (in dollars per share) | $ / shares				$ 0		$ 0
Common Stock, Shares Authorized (in shares)				500,000,000		500,000,000
Common Stock, Shares, Outstanding, Ending Balance (in shares)				91,422,569		86,522,569
Payments of Stock Issuance Costs | $				$ 36,370	$ (0)
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		$ 1.00
Warrants and Rights Outstanding, Term (Year)		24 months
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	10
Payments of Stock Issuance Costs | $	$ 36,370
Private Placement [Member]
Equity Offering, Number of Units Issued (in shares)	4,900,000	4,900,000
Equity Offering, Price Per Unit Issued (in CAD per share) | $ / shares		$ 0.80
Proceeds from Issuance or Sale of Equity, Total	$ 3,098,616	$ 3,920,000
Equity Offering, Number of Common Shares Per Unit (in shares)		1
Payments of Stock Issuance Costs | $		$ 45,500
OCL Technologies Corp [Member]
Stock Issued During Period, Shares, New Issues (in shares)			12,500,000
Shares Issued, Price Per Share (in CAD per share) | $ / shares			$ 0.15
Investors [Member]
Stock Issued During Period, Shares, New Issues (in shares)			7,000,001
Shares Issued, Price Per Share (in CAD per share) | $ / shares			$ 0.15
Employee and Directors [Member]
Stock Issued During Period, Shares, New Issues (in shares)			1,766,667