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Fair Value Of Assets And Liabilities (Summary Of Differences Between The Fair Value Carrying Amount Of Mortgages Held-For-Sale And Aggregate Unpaid Principal Amount) (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Dec. 31, 2017
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Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Loans held-for-sale (elected fair value) | $ 18,940 | $ 20,881
Fair value carrying amount less aggregate unpaid principal - Total loans | (7,704) | (8,874)
Nonaccrual loans | 4,674 | 5,783
Fair value carrying amount less aggregate unpaid principal - Nonaccrual loans | (4,156) | (5,098)
Loans 90 days or more past due and still accruing | 34 | 0
Fair value carrying amount less aggregate unpaid principal - Loans 90 days or more past due and still accruing | (17) | 0
Aggregate unpaid principal |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Loans held-for-sale (elected fair value) | 26,644 | 29,755
Nonaccrual loans | 8,830 | 10,881
Loans 90 days or more past due and still accruing | $ 51 | $ 0

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