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Allowance For Loan Losses (Schedule Of Aging Analysis Of Accruing And Non-Accruing Loans) (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | $ 3,106,150 | $ 3,024,215
Non-accrual | 10,297 | 13,701
Gross loans | 3,127,410 | 3,046,226
Residential real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 1,458,746 | 1,441,086
Non-accrual | 2,814 | 4,302
Gross loans | 1,468,278 | 1,451,462
Home equity |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 138,480 | 141,192
Non-accrual | 168 | 100
Gross loans | 139,499 | 141,965
Commercial and industrial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 206,447 | 183,615
Non-accrual | 1,345 | 1,958
Gross loans | 208,484 | 185,667
Commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 1,269,520 | 1,221,344
Non-accrual | 5,970 | 7,341
Gross loans | 1,277,576 | 1,229,516
Consumer Loan |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 29,108 | 32,506
Non-accrual | 0 | 0
Gross loans | 29,162 | 32,545
DDA Overdrafts |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Current | 3,849 | 4,472
Non-accrual | 0 | 0
Gross loans | 4,411 | 5,071
Financing Receivables, 30 to 59 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 9,631 | 7,067
Financing Receivables, 30 to 59 Days Past Due [Member] | Residential real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 5,990 | 5,364
Financing Receivables, 30 to 59 Days Past Due [Member] | Home equity |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 671 | 423
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial and industrial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 549 | 94
Financing Receivables, 30 to 59 Days Past Due [Member] | Commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 1,841 | 553
Financing Receivables, 30 to 59 Days Past Due [Member] | Consumer Loan |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 39 | 38
Financing Receivables, 30 to 59 Days Past Due [Member] | DDA Overdrafts |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 541 | 595
Financing Receivables, 60 to 89 Days Past Due [Member] |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 1,070 | 861
Financing Receivables, 60 to 89 Days Past Due [Member] | Residential real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 709 | 637
Financing Receivables, 60 to 89 Days Past Due [Member] | Home equity |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 88 | 219
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial and industrial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 1 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 245 | 0
Financing Receivables, 60 to 89 Days Past Due [Member] | Consumer Loan |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 13 | 1
Financing Receivables, 60 to 89 Days Past Due [Member] | DDA Overdrafts |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 14 | 4
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 | 262 | 382
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Residential real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 19 | 73
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Home equity |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 92 | 31
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial and industrial |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 142 | 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Commercial real estate |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 0 | 278
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | Consumer Loan |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | 2 | 0
Financing Receivables, Equal to Greater than 90 Days Past Due [Member] | DDA Overdrafts |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |
Financing Receivable, Recorded Investment, Past Due | $ 7 | $ 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=84173941&loc=SL6953401-111524 + Details
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- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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