Allowance For Loan Losses (Schedule Of Credit Quality Indicators) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	$ 3,587,608	$ 3,127,410
Commercial Industrial Loans And Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	1,719,605	1,486,060
Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	286,314	208,484
Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	1,433,291	1,277,576
Residential real estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	1,656,989	1,468,278
Home equity
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	153,496	139,499
Consumer Loan
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	51,190	29,162
DDA Overdrafts
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	6,328	4,411
Pass | Commercial Industrial Loans And Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	1,632,026	1,407,207
Pass | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	250,856	175,951
Pass | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	1,381,170	1,231,256
Special Mention | Commercial Industrial Loans And Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	33,582	33,940
Special Mention | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	27,886	25,872
Special Mention | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	5,696	8,068
Substandard | Commercial Industrial Loans And Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	53,997	44,913
Substandard | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	7,572	6,661
Substandard | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	46,425	38,252
Doubtful | Commercial Industrial Loans And Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	0	0
Doubtful | Commercial and industrial
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	0	0
Doubtful | Commercial real estate
Financing Receivable, Recorded Investment [Line Items]
Loans, Total	$ 0	$ 0