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Stock Option and Grant Plan - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 22,747	$ 29,559	$ 73,796	$ 90,444
Weighted-average grant date fair value per share of stock options granted			$ 17.49
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense related to unvested stock options	84,200		$ 84,200
Unrecognized compensation cost, cost to recognize over a weighted-average remaining vesting period			2 years 6 months
Restricted Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation cost, cost to recognize over a weighted-average remaining vesting period			2 years 6 months
Unrecognized stock-based compensation expense, expected to vest	$ 57,300		$ 57,300
Restricted Stock \| Minimum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			2 years
Restricted Stock \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Vesting period			4 years
2019 Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares reserved for future issuance	16,110,616		16,110,616
Number of shares available for future issuance	1,807,487		1,807,487
2019 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future issuance	3,590,328		3,590,328
Number of shares issued			174,708	135,187
Stock-based compensation expense	$ 400	$ 300	$ 1,200	$ 1,000