Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2022

Marketable Securities [Abstract]

Summary of Available-for-Sale Debt Securities

The following tables summarize the available-for-sale debt securities held at September 30, 2022 and December 31, 2021 (in thousands):

Description	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
September 30, 2022
US treasury securities	$	119,810	$	6	$	(1,381	)	$	118,435
US government agencies		137,241		5		(2,015	)		135,231
Corporate securities		188,794		—		(2,509	)		186,285
Total	$	445,845	$	11	$	(5,905	)	$	439,951

Description	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
December 31, 2021
US treasury securities	$	186,700	$	—	$	(45	)	$	186,655
US government agencies		79,657		—		(125	)		79,532
Corporate securities		253,929		1		(488	)		253,442
Total	$	520,286	$	1	$	(658	)	$	519,629