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Loans (Information Related To Loans Modified In A TDR) (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
contract
Dec. 31, 2016
USD ($)
contract
Financing Receivable, Modifications [Line Items]    
Number of Contracts | contract 1 4
Pre-Modification Outstanding Recorded Investment $ 3,081 $ 1,076
Post-Modification Outstanding Recorded Investment $ 565 $ 1,076
Commercial Business [Member]    
Financing Receivable, Modifications [Line Items]    
Number of Contracts | contract 1 3
Pre-Modification Outstanding Recorded Investment $ 3,081 $ 526
Post-Modification Outstanding Recorded Investment $ 565 $ 526
Commercial Mortgage [Member]    
Financing Receivable, Modifications [Line Items]    
Number of Contracts | contract   1
Pre-Modification Outstanding Recorded Investment   $ 550
Post-Modification Outstanding Recorded Investment   $ 550