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Significant Accounting Policies - Impacts of COVID-19 (Details) $ in Millions |  | 3 Months Ended
--- | --- | ---
Jun. 01, 2020 USD ($) | Jun. 30, 2020 USD ($) customer
Paycheck Protection Program |  |
Paycheck Protection Program ("PPP") |  |
Loans outstanding |  | $ 746.4
Amortized cost of the loans outstanding |  | $ 729.3
New and existing customers | customer |  | 4,445
Loans outstanding, fees received |  | $ 25.0
Incurred incremental direct origination costs |  | 4.9
Net interest income |  | 3.0
5.25% fixed-to-floating rate notes due 2030 | Subordinated debt |  |
Impacts of COVID-19 |  |
Proceeds from public offering | $ 125.0 | $ 125.0
Interest rate (as a percent) |  | 5.25%

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