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Allowance For Loan Losses (Schedule Of Non-Commercial Loans By Payment Performance) (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Total | $ 2,957,912 | $ 2,862,534
Residential Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,445,242 | 1,383,133
Residential Real Estate [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,441,109 | 1,379,797
Residential Real Estate [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 4,133 | 3,336
Home Equity [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 141,616 | 147,036
Home Equity [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 141,462 | 146,877
Home Equity [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 154 | 159
Consumer Loan [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 33,614 | 36,083
Consumer Loan [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 33,614 | 36,049
Consumer Loan [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 0 | 34
Demand Deposit Account Overdrafts [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 2,965 | 3,361
Demand Deposit Account Overdrafts [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 2,691 | 3,361
Demand Deposit Account Overdrafts [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 274 | 0
Noncommercial Loans [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,623,437 | 1,569,613
Noncommercial Loans [Member] | Performing [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,618,876 | 1,566,084
Noncommercial Loans [Member] | Nonperforming [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | $ 4,561 | $ 3,529

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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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