Allowance For Loan Losses (Schedule Of Troubled Debt Restructurings) (Details) $ in Thousands	3 Months Ended
Mar. 31, 2018 USD ($) contract	Mar. 31, 2017 USD ($) contract	Dec. 31, 2017 USD ($)
Financing Receivable, Modifications [Line Items]
Accruing	$ 32,250		$ 32,568
Non-Accruing	296		134
Total	$ 32,546		32,702
Number of Contracts \| contract	11	12
Pre-Modification Outstanding Recorded Investment	$ 489	$ 4,203
Post Modification Outstanding Recorded Investment	489	$ 4,203
Commercial and industrial
Financing Receivable, Modifications [Line Items]
Accruing	125		135
Non-Accruing	0		0
Total	$ 125		135
Number of Contracts \| contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post Modification Outstanding Recorded Investment	0	$ 0
Commercial real estate
Financing Receivable, Modifications [Line Items]
Accruing	8,324		8,381
Non-Accruing	0		0
Total	$ 8,324		8,381
Number of Contracts \| contract	0	1
Pre-Modification Outstanding Recorded Investment	$ 0	$ 3,015
Post Modification Outstanding Recorded Investment	0	$ 3,015
Residential real estate
Financing Receivable, Modifications [Line Items]
Accruing	20,786		21,005
Non-Accruing	256		84
Total	$ 21,042		21,089
Number of Contracts \| contract	7	9
Pre-Modification Outstanding Recorded Investment	$ 412	$ 1,130
Post Modification Outstanding Recorded Investment	412	$ 1,130
Home equity
Financing Receivable, Modifications [Line Items]
Accruing	3,015		3,047
Non-Accruing	40		50
Total	$ 3,055		3,097
Number of Contracts \| contract	4	2
Pre-Modification Outstanding Recorded Investment	$ 77	$ 58
Post Modification Outstanding Recorded Investment	77	$ 58
Consumer
Financing Receivable, Modifications [Line Items]
Accruing	0		0
Non-Accruing	0		0
Total	$ 0		$ 0
Number of Contracts \| contract	0	0
Pre-Modification Outstanding Recorded Investment	$ 0	$ 0
Post Modification Outstanding Recorded Investment	$ 0	$ 0

Financing Receivable Modifications Recorded Investment Non Accruing Status For Troubled Debt Restructurings.

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- Definition

Financing Receivable Recorded Investment Accrual Status For Troubled Debt Restructurings

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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- Definition

Post-modification amount of investment in financing receivables modified by troubled debt restructurings.

+ References

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- Definition

Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.

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- Definition

The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 40
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554

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