Description of Business and Basis of Presentation (Details) $ / shares in Units, $ in Thousands |
1 Months Ended | 3 Months Ended | |||
|---|---|---|---|---|---|
|
Apr. 15, 2019
USD ($)
$ / shares
shares
|
Apr. 14, 2019
shares
|
May 31, 2018 |
Apr. 30, 2019
USD ($)
shares
|
Apr. 30, 2018
USD ($)
|
|
| Subsidiary, Sale of Stock [Line Items] | |||||
| Payments of other offering costs | $ 6,400 | $ 3,923 | $ 0 | ||
| Common stock | |||||
| Subsidiary, Sale of Stock [Line Items] | |||||
| Number of shares as a result of conversion (in shares) | shares | 41,273,345 | 41,273,345 | |||
| Stock split, conversion ratio | 2 | ||||
| Redeemable convertible preferred stock | |||||
| Subsidiary, Sale of Stock [Line Items] | |||||
| Stock split, conversion ratio | 2 | ||||
| IPO | |||||
| Subsidiary, Sale of Stock [Line Items] | |||||
| Number of shares issued and sold (in shares) | shares | 9,860,500 | ||||
| Public offering price (in dollars per share) | $ / shares | $ 24.00 | ||||
| Proceeds from sale of stock | $ 213,700 | ||||
| Payments of underwriters' commissions and discounts | 16,600 | ||||
| Payments of other offering costs | $ 6,400 | ||||