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Loans, Troubled Debt Restructurings Segregated by Class (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 USD ($) Loan | Mar. 31, 2019 USD ($) Loan | Dec. 31, 2019 USD ($) Loan
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Number of Loans | Loan | 23 | 13 | 35
Pre-Modification Outstanding Recorded Investment | $ 7,594 |  |
Post-Modification Outstanding Balance | 7,522 | $ 3,195 | $ 9,076
Commitment to extend additional credit on loans modified in TDRs | $ 95 |  | $ 82
Defaulted restructured loans, number of loans | Loan | 3 |  | 3
Defaulted restructured loans, recorded balance | $ 3,805 |  | $ 527
Term Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Pre-Modification Outstanding Recorded Investment | 7,594 |  |
Post-Modification Outstanding Balance | $ 7,522 | 2,413 | 8,133
Rate Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Post-Modification Outstanding Balance |  | 0 | 0
Combination [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Post-Modification Outstanding Balance |  | $ 782 | $ 943
Commercial [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Number of Loans | Loan | 22 |  |
Pre-Modification Outstanding Recorded Investment | $ 7,206 |  |
Post-Modification Outstanding Balance | 7,134 |  |
Commercial [Member] | Term Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Pre-Modification Outstanding Recorded Investment | 7,206 |  |
Post-Modification Outstanding Balance | $ 7,134 |  |
Commercial [Member] | Commercial Real Estate Residential [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Number of Loans | Loan | 8 |  |
Pre-Modification Outstanding Recorded Investment | $ 4,397 |  |
Post-Modification Outstanding Balance | 4,399 |  |
Commercial [Member] | Commercial Real Estate Residential [Member] | Term Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Pre-Modification Outstanding Recorded Investment | 4,397 |  |
Post-Modification Outstanding Balance | $ 4,399 |  |
Commercial [Member] | Commercial Real Estate Nonresidential [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Number of Loans | Loan | 9 |  |
Pre-Modification Outstanding Recorded Investment | $ 2,345 |  |
Post-Modification Outstanding Balance | $ 2,336 |  |
Defaulted restructured loans, number of loans | Loan | 1 |  |
Defaulted restructured loans, recorded balance | $ 3,532 |  |
Commercial [Member] | Commercial Real Estate Nonresidential [Member] | Term Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Pre-Modification Outstanding Recorded Investment | 2,345 |  |
Post-Modification Outstanding Balance | $ 2,336 |  |
Commercial [Member] | Commercial Other [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Number of Loans | Loan | 5 | 7 | 17
Pre-Modification Outstanding Recorded Investment | $ 464 |  |
Post-Modification Outstanding Balance | $ 399 | $ 1,262 | $ 1,829
Defaulted restructured loans, number of loans | Loan | 2 |  | 1
Defaulted restructured loans, recorded balance | $ 273 |  | $ 34
Commercial [Member] | Commercial Other [Member] | Term Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Pre-Modification Outstanding Recorded Investment | 464 |  |
Post-Modification Outstanding Balance | $ 399 | 1,122 | 1,565
Commercial [Member] | Commercial Other [Member] | Rate Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Post-Modification Outstanding Balance |  | 0 | 0
Commercial [Member] | Commercial Other [Member] | Combination [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Post-Modification Outstanding Balance |  | $ 140 | $ 264
Commercial [Member] | Real Estate Mortgage [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Number of Loans | Loan |  | 5 | 17
Post-Modification Outstanding Balance |  | $ 1,470 | $ 6,784
Defaulted restructured loans, number of loans | Loan |  |  | 1
Defaulted restructured loans, recorded balance |  |  | $ 30
Commercial [Member] | Real Estate Mortgage [Member] | Term Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Post-Modification Outstanding Balance |  | 828 | 6,105
Commercial [Member] | Real Estate Mortgage [Member] | Rate Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Post-Modification Outstanding Balance |  | 0 | 0
Commercial [Member] | Real Estate Mortgage [Member] | Combination [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Post-Modification Outstanding Balance |  | $ 642 | $ 679
Residential [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Number of Loans | Loan | 1 |  |
Pre-Modification Outstanding Recorded Investment | $ 388 |  |
Post-Modification Outstanding Balance | 388 |  |
Residential [Member] | Term Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Pre-Modification Outstanding Recorded Investment | 388 |  |
Post-Modification Outstanding Balance | $ 388 |  |
Residential [Member] | Real Estate Mortgage [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Number of Loans | Loan | 1 | 1 | 1
Pre-Modification Outstanding Recorded Investment | $ 388 |  |
Post-Modification Outstanding Balance | 388 | $ 463 | $ 463
Defaulted restructured loans, number of loans | Loan |  |  | 1
Defaulted restructured loans, recorded balance |  |  | $ 463
Residential [Member] | Real Estate Mortgage [Member] | Term Modification [Member] |  |  |
Troubled Debt Restructurings Segregated by Class [Abstract] |  |  |
Pre-Modification Outstanding Recorded Investment | 388 |  |
Post-Modification Outstanding Balance | $ 388 | 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] |  |  |
Post-Modification Outstanding Balance |  | $ 0 | $ 0

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