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Commitments And Contingencies (Tables)
6 Months Ended
Jun. 30, 2012
Summary Of Financial Instruments Outstanding
     Contract Amount  
(dollars in thousands)    June 30, 2012      December 31, 2011  

Commitments to grant loans

   $ 360,726       $ 243,458   

Unfunded commitments under lines of credit

     1,924,173         1,773,601   

Commercial and standby letters of credit

     42,905         49,530