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Consolidated Balance Sheets (Parentheticals) - $ / shares
Jun. 30, 2021
Jun. 30, 2020
Common stock, par value (in dollars per share) $ 1.5 $ 1.5
Common stock, shares authorized (in shares) 60,000,000 60,000,000
Common stock, shares issued (in shares) 27,984,278 27,984,278
Common stock, shares outstanding (in shares) 12,044,405 12,235,786
Treasury stock, shares (in shares) 15,939,873 15,748,492