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Summary of Significant Accounting Policies - Operating, Accounting and Reporting Considerations Related to COVID-19 (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2020 | Sep. 30, 2021 | Dec. 31, 2020 | Dec. 31, 2021
Accounting Policies [Abstract] |  |  |  |
Deferral period for payment deferrals |  |  | 90 days |
Remaining payment deferrals |  |  | $ 16.6 |
PPP loans originations | $ 247.5 | $ 113.1 |  |
Amount of PPP loans outstanding |  |  |  | $ 39.0

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- Definition Financing Receivable, Cumulative Aggregate Loan Balance Of Loans Processed For Payment Deferrals + References No definition available. + Details
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