Fair Value Measurements And Fair Values Of Financial Instruments (Fair Value Inputs, Assets, Quantitative Information) (Details) - Impaired Loans [Member] - Significant Unobservable Inputs (Level 3) [Member] - Appraisal Adjustment [Member] $ in Thousands	Dec. 31, 2019 USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 1,080
Minimum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Quantitative Information Percentage	0.00%
Maximum [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Quantitative Information Percentage	100.00%
Weighted Average [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Quantitative Information Percentage	48.00%