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CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $)
Jun. 30, 2011
Dec. 31, 2010
STOCKHOLDERS' EQUITY:    
Common stock, par value (in dollars per share) $ 2.00 $ 2.00
Common stock, authorized shares (in shares) 12,500,000 12,500,000
Common stock, issued shares (in shares) 3,341,251 3,341,251
Treasury stock, shares (in shares) 197,595 199,520