Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2023

Fair Value Disclosures [Abstract]

Summary of Cash Equivalents and Marketable Securities Measured at Fair Value

The following tables summarize the Company’s cash equivalents and marketable securities measured at fair value (in thousands):

			Fair Value Measurements Using
As of September 30, 2023	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents:
U.S. Treasury securities	$	4,982	$	4,982	$	—	$	—
Marketable securities:
U.S. Treasury securities	443,385		443,385		—		—
U.S. Government agency securities	4,990		—		4,990		—
Negotiable certificates of deposit	7,313		—		7,313		—
Corporate debt securities	1,245		—		1,245		—
Total	$	461,915	$	448,367	$	13,548	$	—

			Fair Value Measurements Using
As of December 31, 2022	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
Cash equivalents:
U.S. Treasury securities	$	2,498	$	2,498	$	—	$	—
Marketable securities:
U.S. Treasury securities	244,945		244,945		—		—
U.S. Government agency securities	4,966		—		4,966		—
Negotiable certificates of deposit	4,346		—		4,346		—
Corporate debt securities	16,074		—		16,074		—
Total	$	272,829	$	247,443	$	25,386	$	—