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Consolidated Balance Sheets (Parentheticals) - $ / shares
Dec. 31, 2022
Dec. 31, 2021
Common stock, par value (in dollars per share) $ 0.01 $ 0.01
Common stock, shares authorized (in shares) 60,000,000 60,000,000
Common stock, shares issued (in shares) 41,098,456 40,893,396
Treasury stock, shares (in shares) 839,214 412,769