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Commitments, Credit Risk And Contingencies (Tables)
 6 Months Ended
Jun. 30, 2011
Commitments, Credit Risk And Contingencies  
Summary of Off-Balance Sheet Credit Risk Information
     June 30,
2011 		     December 31,
2010 		 

Commitments to extend credit

    $ 1,782,204       $ 1,550,256   

Standby letters of credit

      108,432         101,185