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Acquisitions (Tables)
 6 Months Ended
Jun. 30, 2012
Acquisitions [Abstract]  
Activity for accretable yield includes contractually due interest of acquired loans
                 
    Six Months Ended
June 30,		  
    2012     2011  
    (In thousands)  

Balance at beginning of period

   $ 43,359     $ 72,863  

Additions

     —         —    

Reductions

     —         —    

Accretion recognized in interest income

     (12,722 )      (17,098 ) 

Reclassification from (to) nonaccretable difference

     —         —    
   

 

 

    

 

 

  

Balance at end of period

   $ 30,637     $ 55,765