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Fair Value Accounting and Measurement (Quantitative Information About Level 3 Fair Value Measurements) (Details) - Fair Value, Nonrecurring [Member]
$ in Thousands
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Collateral dependent loans, Fair Value $ 15,569 $ 10,007
Other real estate owned, fair value disclosure 525  
Fair Value, Inputs, Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Collateral dependent loans, Fair Value 15,569 $ 10,007
Other real estate owned, fair value disclosure $ 525  
Valuation, Market Approach [Member] | Minimum | Fair Value, Inputs, Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Collateral dependent loans, Measurement Input 0.0000 0.0000
Valuation, Market Approach [Member] | Maximum | Fair Value, Inputs, Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Collateral dependent loans, Measurement Input 1.0000 1.0000
Valuation, Market Approach [Member] | Weighted Average | Fair Value, Inputs, Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Collateral dependent loans, Measurement Input 0.4136 0.4968