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Note 3 - Earnings Per Share (Details Textual) - shares
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Share-Based Payment Arrangement, Option [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,420,611 1,204,490
Restricted Stock [Member]    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 2,500 11,664