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Loan Quality And Allowance For Loan Losses (Narrative) (Details)
$ in Millions
 9 Months Ended 12 Months Ended
Sep. 30, 2020
USD ($)
item
Dec. 31, 2019
item
Loan Quality And Allowance For Loan Losses [Abstract]    
New During Period, Number of Contracts | item 0 0
Short-term Modification Period 6 months  
Loan Deferral Or Modification, Granted, Amount | $ $ 83.0  
Loan Deferral Or Modification Granted, Percentage Of Gross Loans 8.00%