Financial Instruments - Schedule of Cash and Cash Equivalents, Money Market Funds and Short-term Investments by Significant Investment Category (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	$ 382,686	$ 487,907
Unrealized Gains	888	822
Unrealized Losses	(40)	(477)
Market Value	383,534	488,252
Cash Equivalents
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	58,637	57,241
Unrealized Gains	0	0
Unrealized Losses	0	0
Market Value	58,637	57,241
Level 1 | Money Market Funds
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	52,660	57,241
Unrealized Gains	0	0
Unrealized Losses	0	0
Market Value	52,660	57,241
U.S. Treasury securities | Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	16,868	27,250
Unrealized Gains	20	46
Unrealized Losses	0	(8)
Market Value	16,888	27,288
U.S. Government agency securities | Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	88,460	133,655
Unrealized Gains	479	563
Unrealized Losses	(2)	(132)
Market Value	88,937	134,086
Corporate debt securities | Level 2
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	224,698	269,761
Unrealized Gains	389	213
Unrealized Losses	(38)	(337)
Market Value	225,049	269,637
Short-term investments
Debt Securities, Available-for-sale [Line Items]
Adjusted Cost	324,049	430,666
Unrealized Gains	888	822
Unrealized Losses	(40)	(477)
Market Value	$ 324,897	$ 431,011