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Loans and Allowance for Loan Losses - Impaired loans (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Impaired |  |
Loans with related allowance for loan losses, Recorded investment | $ 6,452 | $ 6,362
Loans with related allowance for loan losses, unpaid principal | 6,707 | 6,556
Loans with related allowance for loan losses, Related Allowance | 3,066 | 3,138
Loans with no related allowance for loan losses, Recorded investment | 1,490 | 1,592
Loans with no related allowance for loan losses, unpaid principal | 1,682 | 2,515
Recorded investment | 7,942 | 7,954
Unpaid principal balance | 8,389 | 9,071
Commercial | Commercial and industrial |  |
Impaired |  |
Loans with related allowance for loan losses, Recorded investment | 4,891 | 639
Loans with related allowance for loan losses, unpaid principal | 5,028 | 727
Loans with related allowance for loan losses, Related Allowance | 2,764 | 189
Loans with no related allowance for loan losses, Recorded investment | 531 | 337
Loans with no related allowance for loan losses, unpaid principal | 611 | 1,110
Recorded investment | 5,422 | 976
Unpaid principal balance | 5,639 | 1,837
Commercial | Commercial real estate |  |
Impaired |  |
Loans with related allowance for loan losses, Recorded investment | 1,524 | 5,718
Loans with related allowance for loan losses, unpaid principal | 1,642 | 5,823
Loans with related allowance for loan losses, Related Allowance | 271 | 2,946
Loans with no related allowance for loan losses, Recorded investment |  | 207
Loans with no related allowance for loan losses, unpaid principal |  | 236
Recorded investment | 1,524 | 5,925
Unpaid principal balance | 1,642 | 6,059
Consumer | Residential | Real estate first mortgage |  |
Impaired |  |
Loans with no related allowance for loan losses, Recorded investment | 733 | 782
Loans with no related allowance for loan losses, unpaid principal | 741 | 797
Recorded investment | 733 | 782
Unpaid principal balance | 741 | 797
Consumer | Residential | Real estate junior lien |  |
Impaired |  |
Loans with related allowance for loan losses, Recorded investment | 20 |
Loans with related allowance for loan losses, unpaid principal | 20 |
Loans with related allowance for loan losses, Related Allowance | 20 |
Loans with no related allowance for loan losses, Recorded investment | 221 | 266
Loans with no related allowance for loan losses, unpaid principal | 325 | 372
Recorded investment | 241 | 266
Unpaid principal balance | 345 | 372
Consumer | Other revolving and installment |  |
Impaired |  |
Loans with related allowance for loan losses, Recorded investment | 17 | 5
Loans with related allowance for loan losses, unpaid principal | 17 | 6
Loans with related allowance for loan losses, Related Allowance | 11 | 3
Loans with no related allowance for loan losses, Recorded investment | 5 |
Loans with no related allowance for loan losses, unpaid principal | 5 |
Recorded investment | 22 | 5
Unpaid principal balance | $ 22 | $ 6

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