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Loans And Leases (Loans Modified As TDRs By Class Of Loans) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
loan
Financing Receivable, Modifications [Line Items]  
Number of Loans | loan 1
Pre-Modification Outstanding Recorded Investment $ 841
Post-Modification Outstanding Recorded Investment $ 841
Commercial [Member]  
Financing Receivable, Modifications [Line Items]  
Number of Loans | loan 1
Pre-Modification Outstanding Recorded Investment $ 841
Post-Modification Outstanding Recorded Investment $ 841