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CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Sep. 30, 2015
Dec. 31, 2014
CONSOLIDATED BALANCE SHEETS [Abstract]    
Preferred stock, par value per share $ 0.50 $ 0.50
Preferred stock, shares authorized 2,000,000 2,000,000
Preferred stock, shares issued 0 0
Common stock, par value per share $ 0.50 $ 0.50
Common stock, shares authorized 40,000,000 40,000,000
Common stock, shares issued 11,931,147 11,931,147
Treasury stock, shares 578,182 428,572