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Investments and Fair Value Measurements - Schedule of Assets Carried at Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Assets
Cash equivalents	$ 86,757	$ 73,635
Marketable investments	930,639	587,096
Level 1
Assets
Cash equivalents	86,014	71,644
Marketable investments	600,189	315,437
Level 2
Assets
Cash equivalents	743	1,991
Marketable investments	330,450	271,659
Level 3
Assets
Cash equivalents	0	0
Marketable investments	0	0
Certificates of deposit
Assets
Marketable investments	857	1,463
Certificates of deposit | Level 1
Assets
Marketable investments	0	0
Certificates of deposit | Level 2
Assets
Marketable investments	857	1,463
Certificates of deposit | Level 3
Assets
Marketable investments	0	0
U.S. treasury securities
Assets
Marketable investments	600,189	315,437
U.S. treasury securities | Level 1
Assets
Marketable investments	600,189	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	261,376	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	261,376	239,259
U.S. agency and government sponsored securities | Level 3
Assets
Marketable investments	0	0
Commercial paper
Assets
Marketable investments	23,014	17,391
Commercial paper | Level 1
Assets
Marketable investments	0	0
Commercial paper | Level 2
Assets
Marketable investments	23,014	17,391
Commercial paper | Level 3
Assets
Marketable investments	0	0
Municipal bonds
Assets
Marketable investments	1,000	928
Municipal bonds | Level 1
Assets
Marketable investments	0	0
Municipal bonds | Level 2
Assets
Marketable investments	1,000	928
Municipal bonds | Level 3
Assets
Marketable investments	0	0
Corporate bonds
Assets
Marketable investments	44,203	12,618
Corporate bonds | Level 1
Assets
Marketable investments	0	0
Corporate bonds | Level 2
Assets
Marketable investments	44,203	12,618
Corporate bonds | Level 3
Assets
Marketable investments	0	0
Money market funds
Assets
Cash equivalents	86,014	66,661
Money market funds | Level 1
Assets
Cash equivalents	86,014	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	498	493
Certificates of deposit | Level 1
Assets
Cash equivalents	0	0
Certificates of deposit | Level 2
Assets
Cash equivalents	498	493
Certificates of deposit | Level 3
Assets
Cash equivalents	0	0
U.S. treasury securities
Assets
Cash equivalents		4,983
U.S. treasury securities | Level 1
Assets
Cash equivalents		4,983
U.S. treasury securities | Level 2
Assets
Cash equivalents		0
U.S. treasury 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
Municipal bonds
Assets
Cash equivalents	245
Municipal bonds | Level 1
Assets
Cash equivalents	0
Municipal bonds | Level 2
Assets
Cash equivalents	245
Municipal bonds | Level 3
Assets
Cash equivalents	$ 0

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