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Loans (Recorded Investment By Loan Class In Current And Nonaccrual Loans) (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018 | Jun. 30, 2018
--- | --- | --- | ---
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | $ 8,067 | $ 5,713 |
Nonaccrual | 11,458 | 7,133 |
Current | 3,090,539 | 3,031,474 |
Total Loans | 3,110,064 | 3,044,320 | $ 2,858,843
30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 7,171 | 4,761 |
60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 891 | 944 |
Greater than 90 Days [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 5 | 8 |
Commercial Business [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 2,461 | 228 |
Nonaccrual | 638 | 912 |
Current | 591,022 | 555,900 |
Total Loans | 594,121 | 557,040 | 506,265
Commercial Business [Member] | 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 2,346 | 227 |
Commercial Business [Member] | 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 115 | 1 |
Commercial Mortgage [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 1,890 | 574 |
Nonaccrual | 6,836 | 1,586 |
Current | 1,003,199 | 958,105 |
Total Loans | 1,011,925 | 960,265 | 869,192
Commercial Mortgage [Member] | 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 1,741 | 574 |
Commercial Mortgage [Member] | 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 149 |  |
Residential Real Estate Loans [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 1,025 | 1,537 |
Nonaccrual | 2,283 | 2,391 |
Current | 532,565 | 511,053 |
Total Loans | 535,873 | 514,981 | 481,841
Residential Real Estate Loans [Member] | 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 916 | 1,295 |
Residential Real Estate Loans [Member] | 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 109 | 242 |
Residential Real Estate Lines [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 174 | 102 |
Nonaccrual | 282 | 255 |
Current | 104,481 | 106,355 |
Total Loans | 104,937 | 106,712 | 110,319
Residential Real Estate Lines [Member] | 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 77 | 102 |
Residential Real Estate Lines [Member] | 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 97 |  |
Consumer Indirect [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 2,428 | 3,122 |
Nonaccrual | 1,399 | 1,989 |
Current | 843,002 | 883,621 |
Total Loans | 846,829 | 888,732 | 874,718
Consumer Indirect [Member] | 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 2,009 | 2,424 |
Consumer Indirect [Member] | 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 419 | 698 |
Other Consumer [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 89 | 150 |
Nonaccrual | 20 |  |
Current | 16,270 | 16,440 |
Total Loans | 16,379 | 16,590 | $ 16,508
Other Consumer [Member] | 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 82 | 139 |
Other Consumer [Member] | 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | 2 | 3 |
Other Consumer [Member] | Greater than 90 Days [Member] |  |  |
Financing Receivable, Recorded Investment, Past Due [Line Items] |  |  |
Past Due Loans | $ 5 | $ 8 |

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