Investments (Tables)

12 Months Ended

Dec. 31, 2023

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Investments

Available-for-sale investments consisted of the following as of December 31, 2023 and 2022 (in thousands):

	December 31, 2023
	Amortized Cost		Unrealized Gain		Unrealized Loss			Estimated Fair Value
Short-term marketable securities
Commercial paper	$	10,630	$	—	$	—		$	10,630
U.S. government treasury and agency securities		264,214		232		(20	)		264,426
Corporate bonds		6,278		3		—			6,281
Total short-term marketable securities	$	281,122	$	235	$	(20	)	$	281,337

	December 31, 2022
	Amortized Cost		Unrealized Gain		Unrealized Loss			Estimated Fair Value
Short-term marketable securities
Commercial paper	$	9,969	$	—	$	—		$	9,969
U.S. government treasury securities		389,898		14		(4,064	)		385,848
Corporate bonds		12,415		—		(66	)		12,349
Total short-term marketable securities	$	412,282	$	14	$	(4,130	)	$	408,166

Schedule of Gross Unrealized Holding Losses and Fair Values for Investments in Unrealized Loss Position

The following table presents the gross unrealized holding losses and fair values for investments in an unrealized loss position, and the length of time individual securities have been in a continuous loss position, as of December 31, 2023 (in thousands):

	Less Than 12 Months					12 Months Or Greater
	Fair Value		Unrealized Loss			Fair Value		Unrealized Loss
U.S. government treasury and agency securities	$	48,100	$	(20	)	$	—	$	—
Total available-for-sale securities	$	48,100	$	(20	)	$	—	$	—