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Marketable Securities - Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 447,827	$ 455,004
Unrealized Gain	47	3
Unrealized Loss	(7,016)	(2,132)
Marketable securities	440,858	452,875
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	384,951	420,392
Unrealized Gain	0	0
Unrealized Loss	(6,949)	(2,107)
Marketable securities	378,002	418,285
U.S. agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	29,012
Unrealized Gain	47
Unrealized Loss	0
Marketable securities	29,059
Commercial paper
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	28,815	13,878
Unrealized Gain	0	0
Unrealized Loss	0	0
Marketable securities	28,815	13,878
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost		2,003
Unrealized Gain		0
Unrealized Loss		(1)
Marketable securities		2,002
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,049	18,731
Unrealized Gain	0	3
Unrealized Loss	(67)	(24)
Marketable securities	$ 4,982	$ 18,710

X

- Definition

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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Amount, before tax, of unrealized loss 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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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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