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Fair Value Measurements (Qualitative Information About Level 3 Assets Measured at Fair Value on a Nonrecurring Basis) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Fair Value Inputs Assets Qualitative Information [Line Items]    
Collateral dependent impaired loans [1] $ 523 $ 5,993
Nonrecurring [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Collateral dependent impaired loans 883 1,425
Property acquired through foreclosure or repossession 2,142 131
Nonrecurring [Member] | Level 3 [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Collateral dependent impaired loans 883 1,425
Property acquired through foreclosure or repossession $ 2,142 $ 131
Collateral Dependent Impaired Loans [Member] | Nonrecurring [Member] | Level 3 [Member] | Appraisals Of Collateral [Member] | Minimum [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount for costs to sell 0.00% 0.00%
Appraisal adjustments [2] 0.00%  
Collateral Dependent Impaired Loans [Member] | Nonrecurring [Member] | Level 3 [Member] | Appraisals Of Collateral [Member] | Maximum [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount for costs to sell 10.00% 15.00%
Appraisal adjustments [2] 100.00%  
Collateral Dependent Impaired Loans [Member] | Nonrecurring [Member] | Level 3 [Member] | Appraisals Of Collateral [Member] | Weighted Average [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount for costs to sell 10.00% 15.00%
Appraisal adjustments [2] 2.00%  
Property Acquired Through Foreclosure Or Repossession [Member] | Nonrecurring [Member] | Level 3 [Member] | Appraisals Of Collateral [Member] | Minimum [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount for costs to sell 13.00% 10.00%
Appraisal adjustments [2] 12.00% 12.00%
Property Acquired Through Foreclosure Or Repossession [Member] | Nonrecurring [Member] | Level 3 [Member] | Appraisals Of Collateral [Member] | Maximum [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount for costs to sell 13.00% 10.00%
Appraisal adjustments [2] 28.00% 17.00%
Property Acquired Through Foreclosure Or Repossession [Member] | Nonrecurring [Member] | Level 3 [Member] | Appraisals Of Collateral [Member] | Weighted Average [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount for costs to sell 13.00% 10.00%
Appraisal adjustments [2] 20.00% 15.00%
[1] The recorded investment in impaired loans consists of unpaid principal balance, net of charge-offs, interest payments received applied to principal and unamortized deferred loan origination fees and costs. For accruing impaired loans (troubled debt restructurings for which management has concluded that the collectability of the loan is not in doubt), the recorded investment also includes accrued interest.
[2] Management may adjust appraisal values to reflect market value declines or other discounts resulting from its knowledge of the property.