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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, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock-based compensation expense	$ 18,555	$ 22,747	$ 56,877	$ 73,796
Weighted-average grant date fair value per share of stock options granted			$ 20.2
Employee Stock Option
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Unrecognized compensation expense related to unvested stock options	85,000		$ 85,000
Unrecognized compensation cost, cost to recognize over a weighted-average remaining vesting period			2 years 7 months 6 days
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 8 months 12 days
Unrecognized stock-based compensation expense, expected to vest	$ 81,600		$ 81,600
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	18,238,095		18,238,095
Number of shares available for future issuance	1,616,712		1,616,712
2019 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for future issuance	4,466,826		4,466,826
Number of shares issued			140,991	174,708
Stock-based compensation expense	$ 300	$ 400	$ 1,100	$ 1,200