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Note 4 - Net Income Per Share (Details Textual) - $ / shares
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) 329,848 1,113,935
Antidilutive Securities Excluded from Computation of Earnings Per Share, Weight Average Exercise Price (in dollars per share) $ 21.36 $ 15.95