Marketable Securities - Summary of Marketable Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost	$ 444,937	$ 410,144
Unrealized Gains	95	703
Unrealized Losses	(559)	(578)
Estimated Fair Value, current	444,473	410,269
Estimated Fair Value	444,473	410,269
U.S. Treasury securities
Schedule Of Available For Sale Securities [Line Items]
Amortized Cost, current	389,180	301,053
Amortized Cost, noncurrent	51,592	98,701
Estimated Fair Value, current	388,688	300,625
Estimated Fair Value, noncurrent	51,627	99,265
U.S. Treasury securities | 1 or less
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gains	26	102
Unrealized Losses	(518)	(530)
U.S. Treasury securities | 1 - 2
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gains	69	600
Unrealized Losses	(34)	(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	4,165	4,410
Amortized Cost, noncurrent		980
Estimated Fair Value, current	4,158	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	$ (7)	(4)
Negotiable certificates of deposit | 1 - 2
Schedule Of Available For Sale Securities [Line Items]
Unrealized Gains		0
Unrealized Losses		$ (6)