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Fair Value Measurement (Narrative) (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Impaired loans, allowance for loan loss $ 930 $ 477
Consumer Loans [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Period past due for loan appraisals 90 days  
Nonrecurring [Member] | Impaired Loans [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Collateral dependent impaired loans, gross $ 20,900 16,000
Impaired loans, allowance for loan loss $ 800 $ 300