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Note 11 - Capital Stock - Summary of Warrant Activity (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2024
Dec. 31, 2023
Outstanding (in shares) 105,556  
Outstanding, weighted average exercise price (in dollars per share) $ 9.95  
Outstanding, weighted average remaining contractual life (Year) 1 year 1 year 6 months
Outstanding, aggregate intrinsic value of vested warrants $ 188,003 $ 610,114
Issued (in shares) 0  
Exercised (in shares) 0  
Redeemed (in shares) (51,994)  
Expired (in shares) 0  
Outstanding (in shares) 53,562 105,556
Outstanding, weighted average exercise price (in dollars per share) $ 9.95 $ 9.95