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Note 11 - Capital Stock - Summary of Warrant Activity (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2023	Dec. 31, 2022
Outstanding (in shares)	105,556
Outstanding, weighted average exercise price (in dollars per share)	$ 9.95
Outstanding, weighted average remaining contractual life (Year)	2 years 3 months	2 years 6 months
Outstanding, aggregate intrinsic value of vested warrants	$ 1,448,228	$ 1,746,952
Issued (in shares)	0
Exercised (in shares)	0
Expired (in shares)	0
Outstanding (in shares)	105,556	105,556
Outstanding, weighted average exercise price (in dollars per share)	$ 9.95	$ 9.95