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Note 12 - Capital Stock - Summary of Warrant Activity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Outstanding (in shares)	105,556
Outstanding, weighted average exercise price (in dollars per share)	$ 9.95	$ 9.95
Outstanding, weighted average remaining contractual life (Year)	1 year 6 months	2 years 6 months	3 years 6 months
Outstanding, aggregate intrinsic value of vested warrants	$ 610,114	$ 1,746,952	$ 1,982,342
Issued (in shares)	0	0
Exercised (in shares)	0	0
Expired (in shares)	0	0
Outstanding (in shares)	105,556	105,556
Outstanding, weighted average exercise price (in dollars per share)	$ 9.95	$ 9.95	$ 9.95