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Loans and Allowance for Loan Losses - Interest Income (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Impaired |  |  |
Loans with related allowance for loan losses, Average recorded investment | $ 4,784 | $ 6,750 | $ 4,753
Loans with no related allowance for loan losses, Average recorded investment | 6,460 | 3,217 | 3,072
Loans, Average recorded investment | 11,244 | 9,967 | 7,825
Loans with related allowance for loan losses, Interest income | 152 | 16 |
Loans with no related allowance for loan losses, Interest income | 28 | 42 | 50
Loans, Interest income | 180 | 58 | 50
Commercial | Commercial and industrial |  |  |
Impaired |  |  |
Loans with related allowance for loan losses, Average recorded investment | 765 | 839 | 3,163
Loans with no related allowance for loan losses, Average recorded investment | 4,151 | 2,434 | 1,595
Loans, Average recorded investment | 4,916 | 3,273 | 4,758
Loans with related allowance for loan losses, Interest income | 14 | 16 |
Loans with no related allowance for loan losses, Interest income | 25 | 30 | 35
Loans, Interest income | 39 | 46 | 35
Commercial | Commercial real estate |  |  |
Impaired |  |  |
Loans with related allowance for loan losses, Average recorded investment | 3,972 | 5,891 | 1,558
Loans with no related allowance for loan losses, Average recorded investment | 1,614 | 212 | 223
Loans, Average recorded investment | 5,586 | 6,103 | 1,781
Loans with related allowance for loan losses, Interest income | 138 |  |
Loans with no related allowance for loan losses, Interest income |  | 8 | 9
Loans, Interest income | 138 | 8 | 9
Consumer | Residential | Real estate first mortgage |  |  |
Impaired |  |  |
Loans with no related allowance for loan losses, Average recorded investment | 461 | 230 | 533
Loans, Average recorded investment | 461 | 230 | 533
Consumer | Residential | Real estate junior lien |  |  |
Impaired |  |  |
Loans with related allowance for loan losses, Average recorded investment | 19 |  | 4
Loans with no related allowance for loan losses, Average recorded investment | 234 | 338 | 718
Loans, Average recorded investment | 253 | 338 | 722
Loans with no related allowance for loan losses, Interest income | 3 | 4 | 6
Loans, Interest income | 3 | 4 | 6
Consumer | Other revolving and installment |  |  |
Impaired |  |  |
Loans with related allowance for loan losses, Average recorded investment | 28 | 20 | 28
Loans with no related allowance for loan losses, Average recorded investment |  | 3 | 3
Loans, Average recorded investment | $ 28 | $ 23 | $ 31

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