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Loans And Credit Quality (Narrative) (Details)
3 Months Ended 9 Months Ended
May 01, 2020
USD ($)
Sep. 30, 2020
USD ($)
loan
Sep. 30, 2019
loan
Sep. 30, 2020
USD ($)
loan
Sep. 30, 2019
loan
Dec. 31, 2019
USD ($)
Financing Receivable, Modifications [Line Items]            
Proceeds from sale of loans       $ 748,000    
Gain on sale of loans held for sale       59,000    
Recorded Investment   $ 3,633,000   3,633,000   $ 3,521,000
Available commitments outstanding on TDRs   $ 0   $ 0    
Number of new TDRs | loan   0 0 0 0  
Number of loans experiencing payment default | loan   0 0 0 0  
CARES Act [Member]            
Financing Receivable, Modifications [Line Items]            
PPP loan receivable amount for which SBA loan guarantee approval received   $ 67,000,000.0   $ 67,000,000.0    
PPP loans guarantee percent by the SBA   100.00%   100.00%    
Commercial credit cards loan portfolio [Member]            
Financing Receivable, Modifications [Line Items]            
Proceeds from sale of loans $ 689,000          
Gain on sale of loans held for sale $ 59,000          
Consumer [Member]            
Financing Receivable, Modifications [Line Items]            
Real estate foreclosed assets   $ 0   $ 0   0
Loans collateralized by residential real estate in process of foreclosure   0   0   0
Residential real estate [Member]            
Financing Receivable, Modifications [Line Items]            
Recorded Investment   $ 1,525,000   $ 1,525,000   $ 1,346,000