Equity Incentive Plans - Stock-Based Compensation Expense Reported in Condensed Consolidated Statements of Operations (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
---|---|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
Sep. 30, 2020 |
Sep. 30, 2019 |
|
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||
Total stock-based compensation | $ 8,923 | $ 5,728 | $ 26,067 | $ 13,957 |
Research and development | ||||
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||
Total stock-based compensation | 4,726 | 2,727 | 14,094 | 6,483 |
General and administrative | ||||
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items] | ||||
Total stock-based compensation | $ 4,197 | $ 3,001 | $ 11,973 | $ 7,474 |