Loan Quality And Allowance For Loan Losses (Narrative) (Details) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2020 USD ($) item	Dec. 31, 2019 item	Apr. 30, 2020 USD ($)
Financing Receivable, Impaired [Line Items]
New During Period, Number of Contracts \| item	0	0
Short-term Modification Period	6 months
Loan Deferral Or Modification, Granted, Amount			$ 196.0
Loan Deferral Or Modification Granted, Percentage Of Gross Loans			19.00%
Hotel [Member] \| Pass-watch (5) [Member]
Financing Receivable, Impaired [Line Items]
Loan Deferral Or Modification, Granted, Amount	$ 57.0
Hotel [Member] \| Less Than Pass-watch (5) [Member]
Financing Receivable, Impaired [Line Items]
Loan Deferral Or Modification, Granted, Amount	$ 70.0