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Commitments and Contingencies (Tables)
 6 Months Ended
Jun. 30, 2011
Commitments and Contingencies  
Financial Instruments with Off-Balance-Sheet Risk
     June 30,
2011		      December 31,
2010		  

Commitments to extend credit

    $ 4,613,486       $ 4,528,196   

Standby letters of credit

      238,889         294,116   

Deferred standby letter of credit fees

      1,339         1,707