Stockholders' Equity (Deficit) - Summary of Weighted-Average Assumptions Fair Value of the Employee Stock Option Grants (Details) - Stock Option |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2022 |
Jun. 30, 2021 |
Sep. 30, 2022 |
Sep. 30, 2021 |
|
Class Of Stock [Line Items] | ||||
Risk-free interest rate | 0.90% | 1.90% | 0.80% | |
Expected volatility | 89.00% | 90.00% | 90.00% | |
Expected term (in years) | 0 years | 6 years 3 months 18 days | 6 years 2 months 12 days | 6 years 2 months 12 days |