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Equity - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions |  | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Jan. 01, 2020 | Mar. 31, 2018 | Mar. 31, 2023 | Mar. 31, 2022 | Dec. 31, 2019 | Aug. 31, 2021 | Sep. 30, 2018
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Weighted-average grant date fair value of options (in dollars per share) |  |  | $ 23.38 |  |  |  |
Intrinsic value of options exercised |  |  | $ 0.5 |  |  |  |
Restricted stock units |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Intrinsic value of options, vested |  |  | 2.6 |  |  |  |
Incentive Plan |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Incentive units authorized for issuance (in shares) |  | 6,199,477 |  |  |  |  |
Incentive Plan | Employees |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense |  |  | 19.9 | $ 16.6 |  |  |
Compensation expense not yet recognized |  |  | $ 97.7 |  |  |  |
Compensation expense not yet recognized, period of recognition (in years) |  |  | 1 year 10 months 24 days |  |  |  |
2018 Plan |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Common stock reserved for issuance (in shares) |  |  |  |  |  |  | 4,067,007
Common stock, shares remained available for purchase (in shares) |  |  | 2,115,004 |  |  |  |
Annual increase in reserved shares as percentage of outstanding common stock |  |  |  |  | 4.00% |  |
Compensation expense on options not yet recognized |  |  | $ 67.9 |  |  |  |
Stock options vested and expected to vest (in shares) |  |  | 7,743,483 |  |  |  |
Restricted stock units vested and expected to vest (in shares) |  |  | 916,138 |  |  |  |
2018 Plan | Restricted stock units |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense not yet recognized |  |  | $ 29.8 |  |  |  |
Compensation expense not yet recognized, period of recognition (in years) |  |  | 2 years 2 months 12 days |  |  |  |
2018 Plan | Stock options |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense not yet recognized, period of recognition (in years) |  |  | 1 year 8 months 12 days |  |  |  |
Minimum | Incentive Plan |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Share-based award, vesting period (in years) |  | 1 year |  |  |  |  |
Minimum | 2018 Plan |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Annual increase in reserved shares of common stock (in shares) |  |  |  |  | 4,989,593 |  |
Maximum | Incentive Plan |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Common stock reserved for issuance (in shares) |  |  |  |  |  |  | 1,277,181
Share-based award, vesting period (in years) |  | 4 years |  |  |  |  |
2018 ESPP |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Common stock reserved for issuance (in shares) |  |  |  |  |  |  | 311,850
Common stock reserved for issuance represented as percentage on outstanding common stock | 1.00% |  |  |  |  |  |
Common stock, shares remained available for purchase (in shares) |  |  | 2,495,756 |  |  |  |
Common stock, shares issued (in shares) |  |  | 23,206 | 5,749 |  |  |
2018 ESPP | Incentive Plan | Employees |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Compensation expense |  |  | $ 0.3 | $ 0.1 |  |  |
Common | Equity Distribution Agreement | At-the-Market Offering | Piper Sandler and Cantor |  |  |  |  |  |  |
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] |  |  |  |  |  |  |
Common stock aggregate offering price |  |  |  |  |  | $ 300.0 |
Shares issued and sold (in shares) |  |  | 0 |  |  |  |

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