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Fair Value Measurements And Fair Values Of Financial Instruments (Schedule Of Fair Value On A Nonrecurring Basis) (Details) - Fair Value, Nonrecurring [Member]
$ in Thousands
Dec. 31, 2020
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets, Fair Value Disclosure $ 5,474
Significant Unobservable Inputs (Level 3) [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets, Fair Value Disclosure 5,474
Impaired Loans [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets, Fair Value Disclosure 5,474
Impaired Loans [Member] | Significant Unobservable Inputs (Level 3) [Member]  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets, Fair Value Disclosure $ 5,474