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Loans (Details 5) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Financing Receivable Impaired [Line Items]    
Unpaid Principal Balance, With no related allowance recorded $ 4,763 $ 4,617
Unpaid Principal Balance, With an allowance recorded 966 920
Unpaid Principal Balance 5,729 5,537
Recorded Investment, With no related allowance recorded 3,493 3,399
Recorded Investment, With an allowance recorded 890 854
Recorded Investment 4,383 4,253
Allowance for Loan Losses Allocated 61 61
Consumer    
Financing Receivable Impaired [Line Items]    
Unpaid Principal Balance, With no related allowance recorded 539 480
Unpaid Principal Balance, With an allowance recorded 0 0
Recorded Investment, With no related allowance recorded 260 247
Recorded Investment, With an allowance recorded 0 0
Allowance for Loan Losses Allocated 0 0
Commercial real estate, Owner occupied | Commercial real estate    
Financing Receivable Impaired [Line Items]    
Unpaid Principal Balance, With no related allowance recorded   22
Recorded Investment, With no related allowance recorded   8
Allowance for Loan Losses Allocated   0
Commercial real estate, Non-owner occupied | Commercial real estate    
Financing Receivable Impaired [Line Items]    
Unpaid Principal Balance, With no related allowance recorded 38 38
Recorded Investment, With no related allowance recorded 33 34
Allowance for Loan Losses Allocated 0 0
Commercial real estate, Farmland | Commercial real estate    
Financing Receivable Impaired [Line Items]    
Unpaid Principal Balance, With no related allowance recorded 567 570
Unpaid Principal Balance, With an allowance recorded 0  
Recorded Investment, With no related allowance recorded 516 519
Recorded Investment, With an allowance recorded 0  
Allowance for Loan Losses Allocated 0 0
Commercial, Commercial and industrial | Commercial    
Financing Receivable Impaired [Line Items]    
Unpaid Principal Balance, With no related allowance recorded 170 179
Unpaid Principal Balance, With an allowance recorded 51 53
Recorded Investment, With no related allowance recorded 129 141
Recorded Investment, With an allowance recorded 51 53
Allowance for Loan Losses Allocated 2 2
Commercial, Agricultural | Commercial    
Financing Receivable Impaired [Line Items]    
Unpaid Principal Balance, With no related allowance recorded 31 11
Recorded Investment, With no related allowance recorded 31 11
Allowance for Loan Losses Allocated 0 0
Residential real estate, 1-4 family residential | Residential real estate    
Financing Receivable Impaired [Line Items]    
Unpaid Principal Balance, With no related allowance recorded 2,949 2,889
Unpaid Principal Balance, With an allowance recorded 783 795
Recorded Investment, With no related allowance recorded 2,145 2,095
Recorded Investment, With an allowance recorded 724 729
Allowance for Loan Losses Allocated 48 52
Residential real estate, Home equity lines of credit | Residential real estate    
Financing Receivable Impaired [Line Items]    
Unpaid Principal Balance, With no related allowance recorded 469 428
Unpaid Principal Balance, With an allowance recorded 132 72
Recorded Investment, With no related allowance recorded 379 344
Recorded Investment, With an allowance recorded 115 72
Allowance for Loan Losses Allocated $ 11 $ 7