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Investments and Fair Value Measurements - Schedule of Marketable Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Fair Value	$ 843,212	$ 587,096
Short-Term Marketable Investments
Debt Securities, Available-for-sale [Line Items]
Cost	844,030	587,368
Gross Unrealized Gains	39	283
Gross Unrealized Losses	(857)	(555)
Fair Value	843,212	587,096
Certificates of deposit
Debt Securities, Available-for-sale [Line Items]
Fair Value	1,221	1,463
Certificates of deposit | Short-Term Marketable Investments
Debt Securities, Available-for-sale [Line Items]
Cost	1,220	1,463
Gross Unrealized Gains	1	0
Gross Unrealized Losses	0	0
Fair Value	1,221	1,463
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	581,323	315,437
U.S. treasury securities | Short-Term Marketable Investments
Debt Securities, Available-for-sale [Line Items]
Cost	581,951	315,608
Gross Unrealized Gains	12	191
Gross Unrealized Losses	(640)	(362)
Fair Value	581,323	315,437
U.S. agency and government sponsored securities
Debt Securities, Available-for-sale [Line Items]
Fair Value	197,084	239,259
U.S. agency and government sponsored securities | Short-Term Marketable Investments
Debt Securities, Available-for-sale [Line Items]
Cost	197,191	239,358
Gross Unrealized Gains	23	78
Gross Unrealized Losses	(130)	(177)
Fair Value	197,084	239,259
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Fair Value	32,746	17,391
Commercial paper | Short-Term Marketable Investments
Debt Securities, Available-for-sale [Line Items]
Cost	32,768	17,382
Gross Unrealized Gains	1	9
Gross Unrealized Losses	(23)	0
Fair Value	32,746	17,391
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Fair Value	1,924	928
Municipal bonds | Short-Term Marketable Investments
Debt Securities, Available-for-sale [Line Items]
Cost	1,925	927
Gross Unrealized Gains	0	1
Gross Unrealized Losses	(1)	0
Fair Value	1,924	928
Corporate bonds
Debt Securities, Available-for-sale [Line Items]
Fair Value	28,914	12,618
Corporate bonds | Short-Term Marketable Investments
Debt Securities, Available-for-sale [Line Items]
Cost	28,975	12,630
Gross Unrealized Gains	2	4
Gross Unrealized Losses	(63)	(16)
Fair Value	$ 28,914	$ 12,618

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