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Allowance For Loan Losses (Schedule Of Aging Analysis Of Accruing And Non-Accruing Loans) (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | $ 2,852,588 | $ 2,836,419
Financing Receivable, Acquired with Deteriorated Credit Quality, Recorded Investment, Past Due | 619 | 506
Non-accrual | 15,814 | 16,948
Gross loans | 2,877,117 | 2,862,534
Residential Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 1,387,649 | 1,373,604
Financing Receivable, Acquired with Deteriorated Credit Quality, Recorded Investment, Past Due | 0 | 0
Non-accrual | 2,977 | 2,918
Gross loans | 1,395,670 | 1,383,133
Home equity - junior lien [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 141,947 | 146,493
Financing Receivable, Acquired with Deteriorated Credit Quality, Recorded Investment, Past Due | 0 | 0
Non-accrual | 152 | 136
Gross loans | 142,694 | 147,036
Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 162,239 | 162,435
Financing Receivable, Acquired with Deteriorated Credit Quality, Recorded Investment, Past Due | 0 | 0
Non-accrual | 2,967 | 2,745
Gross loans | 165,549 | 165,340
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 1,123,769 | 1,114,953
Financing Receivable, Acquired with Deteriorated Credit Quality, Recorded Investment, Past Due | 619 | 506
Non-accrual | 9,718 | 11,149
Gross loans | 1,135,625 | 1,127,581
Consumer Loan [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 34,672 | 35,886
Financing Receivable, Acquired with Deteriorated Credit Quality, Recorded Investment, Past Due | 0 | 0
Non-accrual | 0 | 0
Gross loans | 34,754 | 36,083
Demand Deposit Account Overdrafts [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 2,312 | 3,048
Financing Receivable, Acquired with Deteriorated Credit Quality, Recorded Investment, Past Due | 0 | 0
Non-accrual | 0 | 0
Gross loans | 2,825 | 3,361
Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 6,327 | 6,946
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 4,330 | 5,261
Financing Receivables, 30 to 59 Days Past Due [Member] | Home equity - junior lien [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 535 | 318
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 145 | 141
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 1,094 | 762
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Loan [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 51 | 154
Financing Receivables, 30 to 59 Days Past Due [Member] | Demand Deposit Account Overdrafts [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 172 | 310
Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 1,544 | 1,220
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 553 | 932
Financing Receivables, 60 to 89 Days Past Due [Member] | Home equity - junior lien [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 41 | 65
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 198 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 380 | 211
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Loan [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 31 | 9
Financing Receivables, 60 to 89 Days Past Due [Member] | Demand Deposit Account Overdrafts [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 341 | 3
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 225 | 495
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 161 | 418
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Home equity - junior lien [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 19 | 24
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 19
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 45 | 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Loan [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 34
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Demand Deposit Account Overdrafts [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | $ 0 | $ 0

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- Definition Financing receivables that are current. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953401-111524 + Details
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- Definition Recorded investment in financing receivables that are on nonaccrual status as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5111-111524 + Details
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