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Loans - Impaired Loans (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) loan | Jun. 30, 2019 USD ($) loan | Jun. 30, 2020 USD ($) loan | Jun. 30, 2019 USD ($) loan | Dec. 31, 2019 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans without a specific valuation allowance - Recorded Balance | $ 6,058,000 |  | $ 6,058,000 |  | $ 9,534,000
Loans without a specific valuation allowance - Unpaid Principal Balance | 6,310,000 |  | 6,310,000 |  | 9,675,000
Loans without a specific valuation allowance | 0 |  | 0 |  | 0
Impaired loans | 4,883,000 |  | 4,883,000 |  | 4,887,000
Loans with a specific valuation allowance - Unpaid Principal Balance | 4,920,000 |  | 4,920,000 |  | 4,924,000
Loans with a specific valuation allowance | 1,769,000 |  | 1,769,000 |  | 1,769,000
Impaired Financing Receivable, Recorded Investment | 10,941,000 |  | 10,941,000 |  | 14,421,000
Impaired Financing Receivable, Unpaid Principal Balance | 11,230,000 |  | 11,230,000 |  | 14,599,000
Impaired Financing Receivable, Related Allowance | 1,769,000 |  | 1,769,000 |  | 1,769,000
Loans without a specific valuation allowance - Average Balance | 5,944,000 | $ 10,397,000 | 7,276,000 | $ 9,736,000 |
Loans without a specific valuation allowance - Interest Income | 47,000 | 152,000 | 67,000 | 260,000 |
Loans with a specific valuation allowance - Average Balance | 4,884,000 | 353,000 | 4,884,000 | 177,000 |
Loans with a specific valuation allowance - Interest Income | 0 | 0 | 0 | 0 |
Impaired Financing Receivable, Average Recorded Investment | 10,828,000 | 10,750,000 | 12,160,000 | 9,913,000 |
Impaired Financing Receivable, Interest Income, Accrual Method | 47,000 | 152,000 | 67,000 | 260,000 |
Other real estate owned | $ 2,065,000 |  | $ 2,065,000 |  | 2,065,000
Mortgage loans in process of foreclosure, number of loans | loan | 1 |  | 1 |  |
Mortgage loans in process of foreclosure, amount | $ 100,000 |  | $ 100,000 |  | 0
Commercial and industrial |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans without a specific valuation allowance - Recorded Balance | 613,000 |  | 613,000 |  | 2,693,000
Loans without a specific valuation allowance - Unpaid Principal Balance | 672,000 |  | 672,000 |  | 2,694,000
Loans without a specific valuation allowance | 0 |  | 0 |  | 0
Impaired loans | 203,000 |  | 203,000 |  | 207,000
Loans with a specific valuation allowance - Unpaid Principal Balance | 240,000 |  | 240,000 |  | 244,000
Loans with a specific valuation allowance | 109,000 |  | 109,000 |  | 109,000
Loans without a specific valuation allowance - Average Balance | 594,000 | 4,053,000 | 1,330,000 | 4,376,000 |
Loans without a specific valuation allowance - Interest Income | 18,000 | 86,000 | 36,000 | 167,000 |
Loans with a specific valuation allowance - Average Balance | 204,000 | 353,000 | 204,000 | 177,000 |
Loans with a specific valuation allowance - Interest Income | 0 | $ 0 | 0 | $ 0 |
Number of contracts classified as TDRs | loan |  | 4 |  | 4 |
Financing receivable, troubled debt restructuring |  | $ 2,000,000.0 |  | $ 2,000,000.0 |
Owner-occupied commercial real estate |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans without a specific valuation allowance - Recorded Balance | 3,922,000 |  | 3,922,000 |  | 5,663,000
Loans without a specific valuation allowance - Unpaid Principal Balance | 3,925,000 |  | 3,925,000 |  | 5,665,000
Loans without a specific valuation allowance | 0 |  | 0 |  | 0
Loans without a specific valuation allowance - Average Balance | 3,923,000 | 2,723,000 | 4,573,000 | 2,464,000 |
Loans without a specific valuation allowance - Interest Income | 29,000 | 66,000 | 31,000 | 93,000 |
Small business lending |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans without a specific valuation allowance - Average Balance | 0 | 0 |  |  |
Loans without a specific valuation allowance - Interest Income | 0 | 0 |  |  |
Residential mortgage |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans without a specific valuation allowance - Recorded Balance | 1,408,000 |  | 1,408,000 |  | 1,135,000
Loans without a specific valuation allowance - Unpaid Principal Balance | 1,498,000 |  | 1,498,000 |  | 1,209,000
Loans without a specific valuation allowance | 0 |  | 0 |  | 0
Loans without a specific valuation allowance - Average Balance | 1,352,000 | 3,538,000 | 1,313,000 | 2,796,000 |
Loans without a specific valuation allowance - Interest Income | 0 | 0 | 0 | 0 |
Other real estate owned | $ 0 |  | $ 0 |  | 0
Number of contracts classified as TDRs | loan | 1 |  | 1 |  |
Financing receivable, troubled debt restructuring | $ 800,000 |  | $ 800,000 |  |
Home equity |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans without a specific valuation allowance - Average Balance | 0 | 0 | 0 | 21,000 |
Loans without a specific valuation allowance - Interest Income | 0 | 0 | 0 | 0 |
Other consumer |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Loans without a specific valuation allowance - Recorded Balance | 115,000 |  | 115,000 |  | 43,000
Loans without a specific valuation allowance - Unpaid Principal Balance | 215,000 |  | 215,000 |  | 107,000
Loans without a specific valuation allowance | 0 |  | 0 |  | 0
Loans without a specific valuation allowance - Average Balance | 75,000 | 83,000 | 60,000 | 79,000 |
Loans without a specific valuation allowance - Interest Income | 0 | 0 | 0 | 0 |
Single tenant lease financing |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Impaired loans | 4,680,000 |  | 4,680,000 |  | 4,680,000
Loans with a specific valuation allowance - Unpaid Principal Balance | 4,680,000 |  | 4,680,000 |  | 4,680,000
Loans with a specific valuation allowance | 1,660,000 |  | 1,660,000 |  | $ 1,660,000
Loans with a specific valuation allowance - Average Balance | 4,680,000 | 0 | 4,680,000 | 0 |
Loans with a specific valuation allowance - Interest Income | 0 | $ 0 | 0 | $ 0 |
COVID-19 | Commercial Portfolio Segment | Healthcare finance |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Financing receivable, troubled debt restructuring | $ 392,400,000 |  | $ 392,400,000 |  |

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