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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Mar. 31, 2017
Dec. 31, 2016
CONSOLIDATED BALANCE SHEETS    
Common Stock, shares authorized 25,000,000 25,000,000
Common Stock, par value (in dollars per share) $ 1 $ 1
Common Stock, shares issued 6,035,389 6,021,564
Common Stock, shares outstanding 5,667,820 5,710,238
Treasury Stock, shares held 367,569 311,326