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Parent Company Financial Information (Condensed Statements Of Condition) (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
Condensed Financial Statements Captions Line Items |  |  |  |
Other assets | $ 114,296 | $ 75,005 |  |
Total assets | 4,384,178 | 4,311,698 |  |
Long-term borrowings, net of issuance costs of $727 and $798, respectively | 39,273 | 39,202 |  |
Other liabilities | 74,783 | 39,796 |  |
Shareholders’ equity | 438,947 | 396,293 | $ 381,177 | $ 320,054
Total liabilities and shareholders’ equity | 4,384,178 | 4,311,698 |  |
Debt issuance costs | 727 | 798 |  |
Parent Company [Member] |  |  |  |
Condensed Financial Statements Captions Line Items |  |  |  |
Cash and due from subsidiary | 7,172 | 7,377 |  |
Investment in and receivables due from subsidiary | 471,959 | 429,202 |  |
Other assets | 3,992 | 6,199 |  |
Total assets | 483,123 | 442,778 |  |
Long-term borrowings, net of issuance costs of $727 and $798, respectively | 39,273 | 39,202 |  |
Other liabilities | 4,903 | 7,283 |  |
Shareholders’ equity | 438,947 | 396,293 |  |
Total liabilities and shareholders’ equity | 483,123 | 442,778 |  |
Debt issuance costs | $ 727 | $ 798 |  |

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