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Fair Value Measurements (Fair Value of Assets Measured on Nonrecurring Basis) (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Appraisal of Collateral [Member] | Weighted Average [Member]    
Impaired loans:    
Impaired loans, Liquidation expense, Range 10.00%  
Discounted Cash Flow Analysis [Member] | Weighted Average [Member]    
Impaired loans:    
Impaired loans, Discount rate, Range 6.00%  
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Appraisal of Collateral [Member]    
Impaired loans:    
Impaired loans $ 610 $ 2,489
Other real estate owned   $ 74
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Appraisal of Collateral [Member] | Maximum    
Impaired loans:    
Other real estate owned, Appraisal adjustment, Range   31.00%
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Appraisal of Collateral [Member] | Minimum    
Impaired loans:    
Impaired loans, Appraisal adjustment, Range 10.00% 10.00%
Other real estate owned, Appraisal adjustment, Range   0.00%
Other real estate owned, Liquidation expense, Range   10.00%
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Discounted Cash Flow Analysis [Member]    
Impaired loans:    
Impaired loans $ 1,110 $ 2,599
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Discounted Cash Flow Analysis [Member] | Maximum    
Impaired loans:    
Impaired loans, Discount rate, Range 7.25% 7.25%
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] | Discounted Cash Flow Analysis [Member] | Minimum    
Impaired loans:    
Impaired loans, Discount rate, Range 6.00% 4.00%