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Note 10 - Loss Per Share (Details Textual) - shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Restricted Stock Units (RSUs) [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 357,903 314,461
Prefunded Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 5,299,879 3,930,008
Warrant [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 6,091,346 1,091,346