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Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2015
Dec. 31, 2014
Statement of Financial Position [Abstract]    
Preferred stock, par value $ 1 $ 1
Preferred stock, shares authorized 500,000 500,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, par value $ 1 $ 1
Common stock, shares authorized 35,000,000 35,000,000
Common stock, shares issued 8,755,810 8,720,350
Common stock, shares outstanding 8,740,378 8,706,467
Treasury Stock, Shares 15,432 13,883