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Allowance For Loan Losses (Schedule Of Aging Analysis Of Accruing And Non-Accruing Loans) (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Current | $ 3,498,023 | $ 3,559,926
Non-accrual | 11,868 | 14,551
Gross loans | 3,519,367 | 3,587,608
Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Current | 1,634,837 | 1,621,073
Non-accrual | 2,354 | 4,275
Gross loans | 1,644,494 | 1,635,338
Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Current | 150,193 | 152,083
Non-accrual | 161 | 138
Gross loans | 150,676 | 153,496
Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Current | 286,488 | 284,140
Non-accrual | 2,149 | 1,676
Gross loans | 288,803 | 286,314
Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Current | 1,369,886 | 1,445,896
Non-accrual | 7,204 | 8,461
Gross loans | 1,378,116 | 1,454,942
Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Current | 53,184 | 50,894
Non-accrual | 0 | 1
Gross loans | 53,356 | 51,190
DDA overdrafts |  |
Financing Receivable, Past Due [Line Items] |  |
Current | 3,435 | 5,840
Non-accrual | 0 | 0
Gross loans | 3,922 | 6,328
30-59 days |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 8,318 | 11,451
30-59 days | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 6,262 | 8,607
30-59 days | Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 283 | 1,240
30-59 days | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 161 | 397
30-59 days | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 972 | 487
30-59 days | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 162 | 253
30-59 days | DDA overdrafts |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 478 | 467
60-89 days |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 1,064 | 1,423
60-89 days | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 964 | 1,213
60-89 days | Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 23 | 11
60-89 days | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 5 | 49
60-89 days | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 54 | 94
60-89 days | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 10 | 41
60-89 days | DDA overdrafts |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 8 | 15
Over 90 days |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 94 | 257
Over 90 days | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 77 | 170
Over 90 days | Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 16 | 24
Over 90 days | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 0 | 52
Over 90 days | Commercial real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 0 | 4
Over 90 days | Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | 0 | 1
Over 90 days | DDA overdrafts |  |
Financing Receivable, Past Due [Line Items] |  |
Financing receivable, recorded investment, past due | $ 1 | $ 6

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