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Transactions with Executive Officers, Directors, and Principal Shareholders - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Related Party Transaction [Line Items] |  |  |
Percentage of gross revenue | 5.00% |  |
Percentage of aggregate amount of consolidated assets | 5.00% |  |
Director |  |  |
Related Party Transaction [Line Items] |  |  |
Related party deposits | $ 8,000 | $ 9,800 |
Minimum |  |  |
Related Party Transaction [Line Items] |  |  |
Percentage of participation in equity | 10.00% |  |
Letter of Credit | Affiliated Entity |  |  |
Related Party Transaction [Line Items] |  |  |
Outstanding commitment | $ 25 | $ 500 | $ 500

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