Note 8 - Warrants - Schedule of Warrants (Details)		3 Months Ended	12 Months Ended
		Mar. 31, 2021 $ / shares shares	Dec. 31, 2021 $ / shares $ / shares shares
Warrants outstanding (in shares)		12,500,000	12,500,000
Warrants outstanding, weighted average exercise price (in dollars per share) | $ / shares		$ 0.001	$ 0.001
Granted, warrants (in shares)		4,900,000
Granted, weighted average exercise price (in dollars per share) | $ / shares		$ 1.00
Warrants outstanding (in shares)		17,400,000	17,400,000
Warrants outstanding, weighted average exercise price (in dollars per share) | $ / shares		$ 0.28
Number of warrants outstanding (in shares)		17,400,000	17,400,000
Number of warrants exercisable (in shares)			4,900,000
Warrants Expiring on April 19, 2023 [Member]
Warrants outstanding (in shares)			4,900,000
Exercise price (in CAD per share) | $ / shares			$ 1.00
Number of warrants outstanding (in shares)			4,900,000
Number of warrants exercisable (in shares)			4,900,000
Remaining contractual life (Year)			1 year 18 days
Warrants Expiring on June 4, 2025 [Member]
Warrants outstanding (in shares)	[1]		12,500,000
Number of warrants outstanding (in shares)	[1]		12,500,000
Number of warrants exercisable (in shares)	[1]		0
Remaining contractual life (Year)	[1]		3 years 2 months 4 days

[1] No share purchase warrants are exercisable until specific performance criteria have been met. Such criteria being 1) revenue sales projections per CTI’s 5 year proformas, or 2) listing on a major US exchange, or 3) change of control.