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Loans (Additional Information) (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) loan | Jun. 30, 2019 loan | Jun. 30, 2020 USD ($) loan | Jun. 30, 2019 loan | Dec. 31, 2019 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
Interest income on non-accrual loans | $ 13,000 |  | $ 16,000 |  |
Troubled debt restructurings | 114,000 |  | 114,000 |  |
Additional lending amount to customers whose loan terms has been modified in troubled debt restructuring | $ 0 |  | $ 0 |  | $ 0
Number of loans modified as troubled debt restructurings | loan | 0 | 0 | 0 | 0 |
Number of loans modified as troubled debt restructuring subsequently defaulted | loan | 0 | 0 | 0 | 0 |
Threshold amount to individually classify loans by credit risk | $ 250,000 |  | $ 250,000 |  |
CARES Act | Commercial and Industrial Loans |  |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |  |
PPP loans guaranteed by the SBA, CARES Act | $ 349,546,000 |  | $ 349,546,000 |  |

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