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Loan Quality And Allowance For Loan Losses (Narrative) (Details)
$ in Millions
 3 Months Ended 12 Months Ended
Mar. 31, 2020
item
Dec. 31, 2019
item
Apr. 30, 2020
USD ($)
New During Period, Number of Contracts | item 0 0  
Short-term Modification Period 6 months    
Subsequent Event [Member]      
Loan Deferral Or Modification, Granted, Amount | $     $ 30.0
Loan Deferral Or Modification Granted, Percentage Of Gross Loans     3.00%