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Financial Instruments with Off-Balance-Sheet Risk (Schedule of contract amounts represent off-balance sheet credit risk) (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset $ 94,884 $ 81,536
Future loan commitments    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset 9,881 3,157
Undisbursed construction loans    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset 10,202 16,289
Undisbursed home equity lines of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset 10,277 9,532
Undisbursed commercial and other line of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset 59,234 50,773
Standby letters of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset $ 5,290 $ 1,785