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Investments and Fair Value Measurements - Schedule of Assets Carried at Fair Value (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Cash equivalents	$ 161,972	$ 73,635
Marketable investments	843,212	587,096
Level 1
Assets
Cash equivalents	160,426	71,644
Marketable investments	581,323	315,437
Level 2
Assets
Cash equivalents	1,546	1,991
Marketable investments	261,889	271,659
Level 3
Assets
Cash equivalents	0	0
Marketable investments	0	0
Certificates of deposit
Assets
Marketable investments	1,221	1,463
Certificates of deposit | Level 1
Assets
Marketable investments	0	0
Certificates of deposit | Level 2
Assets
Marketable investments	1,221	1,463
Certificates of deposit | Level 3
Assets
Marketable investments	0	0
U.S. treasury securities
Assets
Marketable investments	581,323	315,437
U.S. treasury securities | Level 1
Assets
Marketable investments	581,323	315,437
U.S. treasury securities | Level 2
Assets
Marketable investments	0	0
U.S. treasury securities | Level 3
Assets
Marketable investments	0	0
U.S. agency and government sponsored securities
Assets
Marketable investments	197,084	239,259
U.S. agency and government sponsored securities | Level 1
Assets
Marketable investments	0	0
U.S. agency and government sponsored securities | Level 2
Assets
Marketable investments	197,084	239,259
U.S. agency and government sponsored securities | Level 3
Assets
Marketable investments	0	0
Commercial paper
Assets
Marketable investments	32,746	17,391
Commercial paper | Level 1
Assets
Marketable investments	0	0
Commercial paper | Level 2
Assets
Marketable investments	32,746	17,391
Commercial paper | Level 3
Assets
Marketable investments	0	0
Municipal bonds
Assets
Marketable investments	1,924	928
Municipal bonds | Level 1
Assets
Marketable investments	0	0
Municipal bonds | Level 2
Assets
Marketable investments	1,924	928
Municipal bonds | Level 3
Assets
Marketable investments	0	0
Corporate bonds
Assets
Marketable investments	28,914	12,618
Corporate bonds | Level 1
Assets
Marketable investments	0	0
Corporate bonds | Level 2
Assets
Marketable investments	28,914	12,618
Corporate bonds | Level 3
Assets
Marketable investments	0	0
Money market funds
Assets
Cash equivalents	93,396	66,661
Money market funds | Level 1
Assets
Cash equivalents	93,396	66,661
Money market funds | Level 2
Assets
Cash equivalents	0	0
Money market funds | Level 3
Assets
Cash equivalents	0	0
Certificates of deposit
Assets
Cash equivalents	488	493
Certificates of deposit | Level 1
Assets
Cash equivalents	0	0
Certificates of deposit | Level 2
Assets
Cash equivalents	488	493
Certificates of deposit | Level 3
Assets
Cash equivalents	0	0
U.S. treasury securities
Assets
Cash equivalents	67,030	4,983
U.S. treasury securities | Level 1
Assets
Cash equivalents	67,030	4,983
U.S. treasury securities | Level 2
Assets
Cash equivalents	0	0
U.S. treasury securities | Level 3
Assets
Cash equivalents	0	0
U.S. agency and government sponsored securities
Assets
Cash equivalents	1,058
U.S. agency and government sponsored securities | Level 1
Assets
Cash equivalents	0
U.S. agency and government sponsored securities | Level 2
Assets
Cash equivalents	1,058
U.S. agency and government sponsored securities | Level 3
Assets
Cash equivalents	$ 0
Commercial paper
Assets
Cash equivalents		1,498
Commercial paper | Level 1
Assets
Cash equivalents		0
Commercial paper | Level 2
Assets
Cash equivalents		1,498
Commercial paper | Level 3
Assets
Cash equivalents		$ 0

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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