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Marketable Securities - Amortized Cost and Fair Value of Debt Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value to Amortized Cost
Amortized Cost		$ 167,316
Allowance for Credit Losses		0
Net Amortized Cost		167,316
Gross Unrealized Gains		34
Gross Unrealized Losses		(31)
Fair Value	$ 294,426	167,319
Cash and cash equivalents
Fair Value to Amortized Cost
Fair Value	0	33,902
Marketable securities
Fair Value to Amortized Cost
Fair Value	294,426	133,417
U.S. treasury bills
Fair Value to Amortized Cost
Amortized Cost	294,211	113,908
Allowance for Credit Losses	0	0
Net Amortized Cost	294,211	113,908
Gross Unrealized Gains	215	27
Gross Unrealized Losses	0	0
Fair Value	$ 294,426	113,935
U.S. corporate bonds
Fair Value to Amortized Cost
Amortized Cost		46,228
Allowance for Credit Losses		0
Net Amortized Cost		46,228
Gross Unrealized Gains		7
Gross Unrealized Losses		(24)
Fair Value		46,211
Foreign corporate bonds
Fair Value to Amortized Cost
Amortized Cost		7,180
Allowance for Credit Losses		0
Net Amortized Cost		7,180
Gross Unrealized Gains		0
Gross Unrealized Losses		(7)
Fair Value		$ 7,173

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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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