Note 8 - Warrants - Schedule of Warrants (Details) - $ / shares	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Warrants outstanding (in shares)		12,500,000
Warrants outstanding, weighted average exercise price (in dollars per share)		$ 0.001
Granted, warrants (in shares)		4,900,000
Granted, weighted average exercise price (in dollars per share)		$ 1.00
Warrants outstanding (in shares)	17,400,000	17,400,000
Warrants outstanding, weighted average exercise price (in dollars per share)		$ 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 dollars per share)	$ 1.00
Number of warrants outstanding (in shares)	4,900,000
Number of warrants exercisable (in shares)	4,900,000
Remaining contractual life (Year)	9 months 18 days
Warrants Expiring on June 4, 2025 [Member]
Warrants outstanding (in shares)	12,500,000
Exercise price (in dollars per share)	$ 0.001
Number of warrants outstanding (in shares)	12,500,000
Remaining contractual life (Year)	2 years 11 months 4 days