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Fair Value Measurements (Schedule Of Assets And Liabilities Measured At Fair Value On A Recurring And Nonrecurring Basis) (Details) - USD ($) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value | $ 1,871,000 | $ 2,459,000 | $ 3,461,000
FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfOtherComprehensiveIncomeExtensibleListNotDisclosedFlag |  | Changes in fair value |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss) | 95,000 | $ (183,000) |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements) | (683,000) | (819,000) |
Fair Value, Recurring | Obligations of states and political subdivisions |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 212,738,000 | 268,315,000 |
Fair Value, Recurring | Obligations of states and political subdivisions | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 212,738,000 | 268,315,000 |
Fair Value, Recurring | U.S. Government agencies |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 1,088,093,000 | 1,202,279,000 |
Fair Value, Recurring | U.S. Government agencies | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 1,088,093,000 | 1,202,279,000 |
Fair Value, Recurring | Private label |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 6,704,000 | 7,231,000 |
Fair Value, Recurring | Private label | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 4,833,000 | 4,772,000 |
Fair Value, Recurring | Private label | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 1,871,000 | 2,459,000 |
Fair Value, Recurring | Trust preferred securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 4,278,000 | 3,828,000 |
Fair Value, Recurring | Trust preferred securities | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 4,278,000 | 3,828,000 |
Fair Value, Recurring | Corporate securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 26,324,000 | 23,867,000 |
Fair Value, Recurring | Corporate securities | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 26,324,000 | 23,867,000 |
Fair Value, Recurring | Equity Securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 7,538,000 | 7,569,000 |
Fair Value, Recurring | Equity Securities | Level 1 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 3,093,000 | 3,851,000 |
Fair Value, Recurring | Equity Securities | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 4,445,000 | 3,718,000 |
Fair Value, Recurring | Certificates of Deposit |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 747,000 |
Fair Value, Recurring | Certificates of Deposit | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure |  | 747,000 |
Fair Value, Recurring | Derivative assets |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 60,527,000 | 81,838,000 |
Fair Value, Recurring | Derivative assets | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 60,527,000 | 81,838,000 |
Fair Value, Recurring | Derivative liabilities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 48,578,000 | 65,056,000 |
Fair Value, Recurring | Derivative liabilities | Level 1 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | 0 |
Fair Value, Recurring | Derivative liabilities | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 48,578,000 | 65,056,000 |
Fair Value, Recurring | Derivative liabilities | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | 0 |
Fair Value, Nonrecurring | Other real estate owned |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 731,000 | 909,000 |
Fair Value, Nonrecurring | Other real estate owned | Level 1 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 |
Fair Value, Nonrecurring | Other real estate owned | Level 2 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | 0 | 0 |
Fair Value, Nonrecurring | Other real estate owned | Level 3 |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Assets, Fair Value Disclosure | $ 731,000 | $ 909,000 |

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