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Note 11 - Equity - Schedule of Warrants (Details) - $ / shares
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Outstanding warrants, number (in shares) 88,251 12,827  
Outstanding warrants, exercise price (in dollars per share) $ 21.73 $ 72.12  
Outstanding warrants, weighted average remaining life (Year) 2 years 5 months 15 days 2 years 6 months 10 months 6 days
Series C Warrants (Note 10.a) (in shares) 159,964 20,642  
Series C Warrants (Note 10.a), exercise price (in dollars per share) $ 24.62 $ 28.85  
Warrants issued pursuant to modification of convertible debt (in shares)   54,782  
Warrants issued pursuant to modification of convertible debt, exercise price (in dollars per share)   $ 7.21  
Outstanding warrants, number (in shares) 248,215 88,251 12,827
Outstanding warrants, exercise price (in dollars per share) $ 19.9 $ 21.73 $ 72.12