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Allowance For Loan Losses (Schedule Of Credit Quality Indicators) (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Financing Receivable, Recorded Investment [Line Items] |  |
Total | $ 2,877,117 | $ 2,862,534
Commercial, Industrial, And Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,301,174 | 1,292,921
Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 165,549 | 165,340
Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,135,625 | 1,127,581
Pass [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,236,531 | 1,227,170
Pass [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 157,275 | 156,664
Pass [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,079,256 | 1,070,506
Special Mention [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 23,242 | 25,041
Special Mention [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 1,995 | 4,099
Special Mention [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 21,247 | 20,942
Substandard [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 41,171 | 40,672
Substandard [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 6,279 | 4,539
Substandard [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 34,892 | 36,133
Doubtful [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 230 | 38
Doubtful [Member] | Commercial And Industrial [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | 0 | 38
Doubtful [Member] | Commercial Real Estate [Member] |  |
Financing Receivable, Recorded Investment [Line Items] |  |
Total | $ 230 | $ 0

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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=28367877&loc=d3e4428-111522 + Details
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