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Troubled Debt Restructurings (Narrative) (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2019
USD ($)
contract
Dec. 31, 2018
USD ($)
contract
Dec. 31, 2017
contract
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Number of troubled debt restructured loans 18 19  
Total troubled debt restructured loans | $ $ 3,000 $ 3,800  
Number of contracts in nonaccrual status 4 2  
Total of loans in nonaccrual status | $ $ 401 $ 118  
Number of contracts 0 1 1
Loan is considered payment default 30 days    
Consumer Installment [Member]      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Number of contracts     1
Number of contracts modified by reducing the interest rate     1
Residential Single Family [Member]      
Financing Receivable, Troubled Debt Restructuring [Line Items]      
Number of contracts modified by changing the amortization period   1