Equity (Details) - USD ($) $ / shares in Units, $ in Millions |
3 Months Ended | |||
|---|---|---|---|---|
Jul. 20, 2018 |
Mar. 31, 2020 |
Dec. 31, 2019 |
Aug. 01, 2019 |
|
| Equity | ||||
| Common stock, authorized (in shares) | 150,000,000 | 150,000,000 | 150,000,000 | |
| Shares authorized | 160,000,000 | |||
| Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 | $ 0.001 | |
| Preferred stock, share authorized (in shares) | 10,000,000 | 10,000,000 | 10,000,000 | |
| Preferred stock, par value (in dollars per share) | $ 0.001 | $ 0.001 | $ 0.001 | |
| Common stock | ||||
| Equity | ||||
| Conversion of redeemable convertible preferred stock to common stock (in shares) | 51,845,438 | |||
| IPO | ||||
| Equity | ||||
| Shares issued (in shares) | 12,055,450 | |||
| Net proceeds after deducting underwriting discounts and commissions and other offering costs | $ 254.3 | |||
| IPO | Common stock | ||||
| Equity | ||||
| Shares issued (in shares) | 12,055,450 | |||
| Overallotment | ||||
| Equity | ||||
| Shares issued (in shares) | 1,572,450 | |||
| At the market offering | ||||
| Equity | ||||
| Shares issued (in shares) | 0 | |||
| Percentage of commission | 3.00% | |||
| Aggregate offering price | $ 100.0 |