Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2023

Fair Value Disclosures [Abstract]

Assets and Liabilities Carried at Fair Value Measured on Recurring Basis

The following tables summarize the Company’s assets by significant categories carried at fair value measured on a recurring basis at December 31, 2023 and 2022, respectively, by valuation hierarchy (in thousands):

	December 31, 2023
	Carrying Value		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash Equivalents		Marketable Securities
Level 1:
Money market funds	$	270,476	$	—	$	—		$	270,476	$	270,476	$	—
Subtotal	$	270,476	$	—	$	—		$	270,476	$	270,476	$	—
Level 2:
Commercial paper	$	19,295	$	8	$	—		$	19,303	$	1,998	$	17,305
U.S. Treasury securities		17,762		8		—			17,771	$	2,990	$	14,781
U.S. Agency securities		17,694		8		(1	)		17,701		—		17,701
Subtotal	$	54,751	$	24	$	(1	)	$	54,775	$	4,988	$	49,787
Total	$	325,227	$	24	$	(1	)	$	325,251	$	275,464	$	49,787

	December 31, 2022
	Carrying Value		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash Equivalents		Marketable Securities
Level 1:
Money market funds	$	77,191	$	—	$	—		$	77,191	$	77,191	$	—
Subtotal	$	77,191	$	—	$	—		$	77,191	$	77,191	$	—
Level 2:
Commercial paper	$	18,701	$	—	$	—		$	18,701	$	—	$	18,701
U.S. Treasury securities		35,266		—		(55	)		35,211		4,984		30,227
Subtotal	$	53,967	$	—	$	(55	)	$	53,912	$	4,984	$	48,928
Total	$	131,158	$	—	$	(55	)	$	131,103	$	82,175	$	48,928