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Commitments, Credit Risk And Contingencies (Tables)
9 Months Ended
Sep. 30, 2012
Summary Of Off-Balance Sheet Credit Risk Information
     September 30,
2012
     December 31,
2011
 

Commitments to extend credit

   $ 2,557,030       $ 1,943,889   

Standby letters of credit

     131,552         113,268