Fair Value Measurements - Recurring Fair Value Measurements (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Assets
Short-term investments	$ 179,409	$ 268,724
Fair Value, Measurements, Recurring
Assets
Total assets	938,838	1,127,309
Fair Value, Measurements, Recurring | Money market funds
Assets
Money market funds	458,195	627,983
Fair Value, Measurements, Recurring | U.S. treasury bills
Assets
Money market funds	214,189	230,602
Fair Value, Measurements, Recurring | Commercial paper
Assets
Money market funds	8,028
Fair Value, Measurements, Recurring | Corporate debt securities
Assets
Money market funds	53,238
Short-term investments		2,975
Fair Value, Measurements, Recurring | Certificate of deposits
Assets
Money market funds	25,779
Fair Value, Measurements, Recurring | U.S. treasury securities
Assets
Short-term investments	168,900	240,256
Fair Value, Measurements, Recurring | U.S. agency securities
Assets
Short-term investments		14,993
Fair Value, Measurements, Recurring | Asset-backed securities
Assets
Short-term investments	10,509	10,500
Fair Value, Measurements, Recurring | Level 1
Assets
Total assets	841,284	1,098,841
Fair Value, Measurements, Recurring | Level 1 | Money market funds
Assets
Money market funds	458,195	627,983
Fair Value, Measurements, Recurring | Level 1 | U.S. treasury bills
Assets
Money market funds	214,189	230,602
Fair Value, Measurements, Recurring | Level 1 | Commercial paper
Assets
Money market funds	0
Fair Value, Measurements, Recurring | Level 1 | Corporate debt securities
Assets
Money market funds	0
Short-term investments		0
Fair Value, Measurements, Recurring | Level 1 | Certificate of deposits
Assets
Money market funds	0
Fair Value, Measurements, Recurring | Level 1 | U.S. treasury securities
Assets
Short-term investments	168,900	240,256
Fair Value, Measurements, Recurring | Level 1 | U.S. agency securities
Assets
Short-term investments		0
Fair Value, Measurements, Recurring | Level 1 | Asset-backed securities
Assets
Short-term investments	0	0
Fair Value, Measurements, Recurring | Level 2
Assets
Total assets	97,554	28,468
Fair Value, Measurements, Recurring | Level 2 | Money market funds
Assets
Money market funds	0	0
Fair Value, Measurements, Recurring | Level 2 | U.S. treasury bills
Assets
Money market funds	0	0
Fair Value, Measurements, Recurring | Level 2 | Commercial paper
Assets
Money market funds	8,028
Fair Value, Measurements, Recurring | Level 2 | Corporate debt securities
Assets
Money market funds	53,238
Short-term investments		2,975
Fair Value, Measurements, Recurring | Level 2 | Certificate of deposits
Assets
Money market funds	25,779
Fair Value, Measurements, Recurring | Level 2 | U.S. treasury securities
Assets
Short-term investments	0	0
Fair Value, Measurements, Recurring | Level 2 | U.S. agency securities
Assets
Short-term investments		14,993
Fair Value, Measurements, Recurring | Level 2 | Asset-backed securities
Assets
Short-term investments	10,509	10,500
Fair Value, Measurements, Recurring | Level 3
Assets
Total assets	0	0
Fair Value, Measurements, Recurring | Level 3 | Money market funds
Assets
Money market funds	0	0
Fair Value, Measurements, Recurring | Level 3 | U.S. treasury bills
Assets
Money market funds	0	0
Fair Value, Measurements, Recurring | Level 3 | Commercial paper
Assets
Money market funds	0
Fair Value, Measurements, Recurring | Level 3 | Corporate debt securities
Assets
Money market funds	0
Short-term investments		0
Fair Value, Measurements, Recurring | Level 3 | Certificate of deposits
Assets
Money market funds	0
Fair Value, Measurements, Recurring | Level 3 | U.S. treasury securities
Assets
Short-term investments	0	0
Fair Value, Measurements, Recurring | Level 3 | U.S. agency securities
Assets
Short-term investments		0
Fair Value, Measurements, Recurring | Level 3 | Asset-backed securities
Assets
Short-term investments	$ 0	$ 0