Cash Equivalents and Marketable Securities - Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Cash Equivalents and Marketable Securities
Total cash equivalents and marketable securities, Amortized Cost	$ 680,511	$ 548,123
Total cash equivalents and marketable securities, Gross Unrealized Gains	459	582
Total cash equivalents and marketable securities, Gross Unrealized Losses	(233)	(553)
Total cash equivalents and marketable securities, Fair Value	680,737	548,152
U.S. Treasury and agency securities
Cash Equivalents and Marketable Securities
Total cash equivalents and marketable securities, Amortized Cost	328,565	299,211
Total cash equivalents and marketable securities, Gross Unrealized Gains	396	429
Total cash equivalents and marketable securities, Gross Unrealized Losses	(154)	(423)
Total cash equivalents and marketable securities, Fair Value	328,807	299,217
Corporate debt securities
Cash Equivalents and Marketable Securities
Total cash equivalents and marketable securities, Amortized Cost	172,441	102,714
Total cash equivalents and marketable securities, Gross Unrealized Gains	47	103
Total cash equivalents and marketable securities, Gross Unrealized Losses	(46)	(112)
Total cash equivalents and marketable securities, Fair Value	172,442	102,705
Money market funds
Cash Equivalents and Marketable Securities
Total cash equivalents and marketable securities, Amortized Cost	26,896	19,563
Total cash equivalents and marketable securities, Fair Value	26,896	19,563
Certificates of deposit
Cash Equivalents and Marketable Securities
Total cash equivalents and marketable securities, Amortized Cost	23,075	15,820
Total cash equivalents and marketable securities, Gross Unrealized Gains	7	22
Total cash equivalents and marketable securities, Gross Unrealized Losses	(3)	(7)
Total cash equivalents and marketable securities, Fair Value	23,079	15,835
Commercial paper
Cash Equivalents and Marketable Securities
Total cash equivalents and marketable securities, Amortized Cost	129,534	110,815
Total cash equivalents and marketable securities, Gross Unrealized Gains	9	28
Total cash equivalents and marketable securities, Gross Unrealized Losses	(30)	(11)
Total cash equivalents and marketable securities, Fair Value	$ 129,513	$ 110,832