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Common Share Repurchases (Table)
6 Months Ended
Jun. 30, 2012
Stockholders' Equity Note [Abstract]  
Share repurchases
 Six Months Ended
 June 30,
 2012 2011
(Dollars and shares in thousands, except cost per share)     
      
Number of shares   1,276
Average cost per share$ $48.83
Total cost$ $62,308