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Loans and Allowance for Loan Losses (Schedule of loan loss provision by change in allowance methodology) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense $ 1,457 $ 629
Current Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 1,653  
Prior Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 708  
Difference    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 945  
Construction and Farmland    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 1,270 (145)
Construction and Farmland | Current Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 1,270  
Construction and Farmland | Prior Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 85  
Construction and Farmland | Difference    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 1,185  
Residential Portfolio Segment | Current Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 73  
Residential Portfolio Segment | Prior Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 275  
Residential Portfolio Segment | Difference    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense (202)  
Commercial Real Estate    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense (493) (17)
Commercial Real Estate | Current Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense (493)  
Commercial Real Estate | Prior Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 444  
Commercial Real Estate | Difference    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense (937)  
Commercial - Non Real Estate    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 360 $ 444
Commercial - Non Real Estate | Current Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 360  
Commercial - Non Real Estate | Prior Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense (262)  
Commercial - Non Real Estate | Difference    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 622  
Consumer Installment Financing Receivable | Current Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 186  
Consumer Installment Financing Receivable | Prior Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 140  
Consumer Installment Financing Receivable | Difference    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 46  
Other Loans | Current Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 257  
Other Loans | Prior Methodology    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense 26  
Other Loans | Difference    
Financing Receivable Impaired [Line Items]    
Provision charged to operating expense $ 231