Loans And Allowance For Credit Losses (Interest Income Recognized on Impaired Loans) (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	$ 1,427
Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	1,008
Real Estate - Construction And Land [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	6
Real Estate - Business [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	151
Real Estate - Personal [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	35
Consumer [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	80
Revolving Home Equity [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	1
Consumer Credit Card [Member]
Loans And Allowance For Loan Losses [Line Items]
Interest income recognized	$ 146