Financial Instruments - Schedule of Cash and Cash Equivalents, Money Market Funds and Short-term Investments by Significant Investment Category (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	$ 451,913	$ 487,907
Unrealized Gains	150	822
Unrealized Losses	(640)	(477)
Market Value	451,423	488,252
Short-term investments
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	368,577	430,666
Unrealized Gains	150	822
Unrealized Losses	(635)	(477)
Market Value	368,092	431,011
Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	83,336	57,241
Unrealized Gains	0	0
Unrealized Losses	(5)	0
Market Value	83,331	57,241
Level 1 | Money Market Funds
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	66,387	57,241
Unrealized Gains	0	0
Unrealized Losses	0	0
Market Value	66,387	57,241
Level 2 | U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	23,493	27,250
Unrealized Gains	0	46
Unrealized Losses	(17)	(8)
Market Value	23,476	27,288
Level 2 | U.S. Government agency securities
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	122,121	133,655
Unrealized Gains	107	563
Unrealized Losses	(234)	(132)
Market Value	121,994	134,086
Level 2 | Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	239,912	269,761
Unrealized Gains	43	213
Unrealized Losses	(389)	(337)
Market Value	$ 239,566	$ 269,637