Fair Value Measurements - Additional Information (Details) - Initial Public Offering |
1 Months Ended |
|---|---|
|
Aug. 31, 2018
shares
| |
| Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | |
| Warrants exercisable for convertible preferred stock | 0 |
| Warrants previously exercisable for preferred stock | 37,200,000 |
| Warrants expired on the effective date | 35,700,000 |
| Remaining warrants previously exercisable for preferred stock adjusted to become exercisable for common stock | 1,500,000 |