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Description of the Business and Basis of Presentation - Additional Information (Details) $ / shares in Units, $ in Millions |  | 3 Months Ended |
--- | --- | --- | ---
Jul. 27, 2020 USD ($) $ / shares shares | Mar. 31, 2021 Employee Office $ / shares shares | Mar. 31, 2020 $ / shares
Description Of Business And Basis Of Presentation [Line Items] |  |  |
Entity formation, month and year |  | 2013-11 |
Number of offices in which entity operates | Office |  | 70 |
Entity number of employees | Employee |  | 2,000 |
Common stock issued, shares | shares |  | 506,330 |
Share price | $ / shares |  | $ 37.61 | $ 31.60
IPO |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |
Common stock issued, shares | shares | 11,500,000 |  |
Share price | $ / shares | $ 15.00 |  |
Net proceeds from sale of common stock | $ | $ 161.3 |  |
Underwriting discounts | $ | 11.2 |  |
Deferred offset | $ | $ 4.4 |  |
Underwriters |  |  |
Description Of Business And Basis Of Presentation [Line Items] |  |  |
Common stock issued, shares | shares | 1,500,000 |  |

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