Marketable Securities - Summary of Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 723,748	$ 410,144
Unrealized Gains	68	703
Unrealized Losses	(521)	(578)
Estimated Fair Value, current	723,295	410,269
Estimated Fair Value	723,295	410,269
U.S. Treasury securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost, current	613,201	301,053
Amortized Cost, noncurrent	108,588	98,701
Estimated Fair Value, current	612,690	300,625
Estimated Fair Value, noncurrent	108,650	99,265
U.S. Treasury securities \| 1 or less
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gains	6	102
Unrealized Losses	(517)	(530)
U.S. Treasury securities \| 1 - 2
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gains	62	600
Unrealized Losses	0	(36)
U.S. Government agency securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost, current		5,000
Estimated Fair Value, current		4,998
U.S. Government agency securities \| 1 or less
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gains		0
Unrealized Losses		(2)
Negotiable certificates of deposit
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost, current	1,959	4,410
Amortized Cost, noncurrent		980
Estimated Fair Value, current	1,955	4,407
Estimated Fair Value, noncurrent		974
Negotiable certificates of deposit \| 1 or less
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gains	0	1
Unrealized Losses	$ (4)	(4)
Negotiable certificates of deposit \| 1 - 2
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gains		0
Unrealized Losses		$ (6)

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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