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Allowance For Loan Losses (Schedule of Non-Commercial Loans By Payment Performance) (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | $ 3,046,226 | $ 2,862,534
Residential real estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 1,451,462 | 1,383,133
Home equity |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 141,965 | 147,036
Consumer Loan |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 32,545 | 36,083
DDA Overdrafts |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 5,071 | 3,361
Non-commercial Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 1,631,043 | 1,569,613
Performing |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 1,630,939 | 1,566,220
Performing | Residential real estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 1,451,389 | 1,379,797
Performing | Home equity |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 141,934 | 147,013
Performing | Consumer Loan |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 32,545 | 36,049
Performing | DDA Overdrafts |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 5,071 | 3,361
Non-Performing |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 104 | 3,393
Non-Performing | Residential real estate |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 73 | 3,336
Non-Performing | Home equity |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 31 | 23
Non-Performing | Consumer Loan |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | 0 | 34
Non-Performing | DDA Overdrafts |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Loans, Total | $ 0 | $ 0

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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. + 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=65884687&loc=d3e4428-111522 + Details
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