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Fair Value Measurement (Financial Instruments Measured At Fair Value On Nonrecurring Basis) (Details) - Nonrecurring [Member] - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Collateral dependent impaired loans $ 17,263 $ 15,735
Level 3 [Member]    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Collateral dependent impaired loans $ 17,263 $ 15,735