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Loans and Leases (Changes In Carrying Amount Of Accretable Yield) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Sep. 01, 2016
Dec. 31, 2014
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities Acquired During Period [Line Items]        
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition     $ 296,529  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition     2,678  
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value     $ 241,392  
Changes in Amount of Accretable Yield [Roll Forward]        
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield $ 335,074 $ 343,856   $ 418,160
Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Additions 12,488 53,192    
Accretion (76,565) (114,580)    
Reclassifications from nonaccretable difference 29,931 25,357    
Changes in expected cash flows that do not affect nonaccretable difference $ 25,364 $ (38,273)