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Loans, Troubled Debt Restructurings Segregated by Class (Details) $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2020 USD ($) Loan | Sep. 30, 2019 USD ($) Loan | Sep. 30, 2020 USD ($) Loan | Sep. 30, 2019 USD ($) Loan | Dec. 31, 2019 USD ($) Loan
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Number of Loans | Loan | 6 | 5 | 40 | 28 | 35
Pre-Modification Outstanding Recorded Investment | $ 4,857 |  | $ 16,070 |  |
Post-Modification Outstanding Balance | 4,914 | $ 302 | 16,042 | $ 7,601 | $ 9,076
Commitment to extend additional credit on loans modified in TDRs | $ 84 |  | $ 84 |  | 82
Defaulted restructured loans, number of loans | Loan | 0 | 2 | 3 | 2 |
Defaulted restructured loans, recorded balance | $ 0 | $ 64 | $ 368 | $ 64 |
Term Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 4,857 |  | 13,726 |  |
Post-Modification Outstanding Balance | 4,914 | 302 | 13,698 | 6,539 | 8,133
Rate Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Post-Modification Outstanding Balance |  | 0 |  | 0 | 0
Combination [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 0 |  | 2,344 |  |
Post-Modification Outstanding Balance | $ 0 | $ 0 | $ 2,344 | $ 1,062 | $ 943
Commercial [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Number of Loans | Loan | 5 |  | 37 |  |
Pre-Modification Outstanding Recorded Investment | $ 4,574 |  | $ 14,854 |  |
Post-Modification Outstanding Balance | 4,632 |  | 14,839 |  |
Commercial [Member] | Term Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 4,574 |  | 12,510 |  |
Post-Modification Outstanding Balance | 4,632 |  | 12,495 |  |
Commercial [Member] | Combination [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 0 |  | 2,344 |  |
Post-Modification Outstanding Balance | $ 0 |  | $ 2,344 |  |
Commercial [Member] | Commercial Real Estate Residential [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Number of Loans | Loan | 1 |  | 12 |  |
Pre-Modification Outstanding Recorded Investment | $ 101 |  | $ 6,503 |  |
Post-Modification Outstanding Balance | $ 101 |  | $ 6,505 |  |
Defaulted restructured loans, number of loans | Loan | 0 | 1 | 0 | 1 |
Defaulted restructured loans, recorded balance | $ 0 | $ 30 | $ 0 | $ 30 |
Commercial [Member] | Commercial Real Estate Residential [Member] | Term Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 101 |  | 4,694 |  |
Post-Modification Outstanding Balance | 101 |  | 4,696 |  |
Commercial [Member] | Commercial Real Estate Residential [Member] | Combination [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 0 |  | 1,809 |  |
Post-Modification Outstanding Balance | $ 0 |  | $ 1,809 |  |
Commercial [Member] | Commercial Real Estate Nonresidential [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Number of Loans | Loan | 3 |  | 15 |  |
Pre-Modification Outstanding Recorded Investment | $ 4,421 |  | $ 7,695 |  |
Post-Modification Outstanding Balance | 4,479 |  | 7,744 |  |
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Term Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 4,421 |  | 7,185 |  |
Post-Modification Outstanding Balance | 4,479 |  | 7,234 |  |
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Combination [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 0 |  | 510 |  |
Post-Modification Outstanding Balance | $ 0 |  | $ 510 |  |
Commercial [Member] | Commercial Other [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Number of Loans | Loan | 1 | 2 | 10 | 13 | 17
Pre-Modification Outstanding Recorded Investment | $ 52 |  | $ 656 |  |
Post-Modification Outstanding Balance | $ 52 | $ 32 | $ 590 | $ 1,432 | $ 1,829
Defaulted restructured loans, number of loans | Loan | 0 | 1 | 3 | 1 |
Defaulted restructured loans, recorded balance | $ 0 | $ 34 | $ 368 | $ 34 |
Commercial [Member] | Commercial Other [Member] | Term Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 52 |  | 631 |  |
Post-Modification Outstanding Balance | 52 | 32 | 565 | 1,292 | 1,565
Commercial [Member] | Commercial Other [Member] | Rate Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Post-Modification Outstanding Balance |  | 0 |  | 0 | 0
Commercial [Member] | Commercial Other [Member] | Combination [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 0 |  | 25 |  |
Post-Modification Outstanding Balance | $ 0 | $ 0 | $ 25 | $ 140 | $ 264
Commercial [Member] | Real Estate Mortgage [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Number of Loans | Loan |  | 3 |  | 13 | 17
Post-Modification Outstanding Balance |  | $ 270 |  | $ 5,463 | $ 6,784
Commercial [Member] | Real Estate Mortgage [Member] | Term Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Post-Modification Outstanding Balance |  | 270 |  | 4,784 | 6,105
Commercial [Member] | Real Estate Mortgage [Member] | Rate Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Post-Modification Outstanding Balance |  | 0 |  | 0 | 0
Commercial [Member] | Real Estate Mortgage [Member] | Combination [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Post-Modification Outstanding Balance |  | $ 0 |  | $ 679 | $ 679
Residential [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Number of Loans | Loan | 1 |  | 3 |  |
Pre-Modification Outstanding Recorded Investment | $ 283 |  | $ 1,216 |  |
Post-Modification Outstanding Balance | 282 |  | 1,203 |  |
Residential [Member] | Term Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 283 |  | 1,216 |  |
Post-Modification Outstanding Balance | 282 |  | 1,203 |  |
Residential [Member] | Combination [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 0 |  | 0 |  |
Post-Modification Outstanding Balance | $ 0 |  | $ 0 |  |
Residential [Member] | Real Estate Mortgage [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Number of Loans | Loan | 1 |  | 3 | 2 | 1
Pre-Modification Outstanding Recorded Investment | $ 283 |  | $ 1,216 |  |
Post-Modification Outstanding Balance | 282 |  | 1,203 | $ 706 | $ 463
Residential [Member] | Real Estate Mortgage [Member] | Term Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 283 |  | 1,216 |  |
Post-Modification Outstanding Balance | 282 |  | 1,203 | 463 | 463
Residential [Member] | Real Estate Mortgage [Member] | Rate Modification [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Post-Modification Outstanding Balance |  |  |  | 0 | 0
Residential [Member] | Real Estate Mortgage [Member] | Combination [Member] |  |  |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |  |  |
Pre-Modification Outstanding Recorded Investment | 0 |  | 0 |  |
Post-Modification Outstanding Balance | $ 0 |  | $ 0 | $ 243 | $ 0

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