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Consolidated Balance Sheets (Parenthetical) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Loans, allowance for credit losses $ 3,307,920 $ 3,930,924 $ 3,399,516
Common stock, par value $ 1 $ 1 $ 1
Common stock, authorized 15,000,000 15,000,000 15,000,000
Common stock, issued 2,736,978 2,717,909 2,702,091
Common stock, outstanding 2,736,978 2,717,909 2,702,091