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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Mar. 31, 2024
Dec. 31, 2023
Preferred stock, par value (in dollars per share) $ 0.01 $ 0.01
Preferred stock, shares authorized (in shares) 10,000,000 10,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 11,250,000 11,250,000
Common stock, shares issued (in shares) 2,540,626 2,482,796
Common stock, shares outstanding (in shares) 2,485,708 2,443,744
Treasury stock, shares (in shares) 54,918 39,052