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Note 12 - Earnings Per Share (Details Textual) - shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Restricted Stock Units (RSUs) [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 2,408,892 149,636
Prefunded Warrants [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 31,440,000 1,015,000
Warrant [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 4,480,000