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Loans and Allowance for Loan Losses (Narrative) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]    
Part of loans of 30 days or more past due as a percentage of total loan portfolio 0.60% 0.23%
Net of deferred loan fees and costs $ 3,600 $ 3,300
Commercial Loan [Member]    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Part of loans of 30 days or more past due as a percentage of total loan portfolio 0.39% 0.10%
Consumer Loan [Member]    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Part of loans of 30 days or more past due as a percentage of total loan portfolio 0.21% 0.13%