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Consolidated Balance Sheets [Parenthetical] (USD $)
Dec. 31, 2011
Dec. 31, 2010
Preferred stock, par value (in dollars per share) $ 0 $ 0
Preferred stock, shares authorized 200,000 200,000
Preferred stock, shares issued 0 0
Common stock, par value (in dollars per share) $ 2.50 $ 2.50
Common stock, shares authorized 10,000,000 10,000,000
Common stock, shares, issued 5,027,433 5,027,433
Treasury stock, shares 165,654 165,654