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Note 8 - Earnings Per Share (Details Textual) - shares
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Restricted Stock Units (RSUs) [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 405,298 354,114
Prefunded Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 3,390,008 3,390,008
Warrant [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 1,091,346 560,096