Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2023

Marketable Securities [Abstract]

Summary of Available-for-Sale Debt Securities

The following tables summarize the available-for-sale debt securities held at September 30, 2023 and December 31, 2022 (in thousands):

Description	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
September 30, 2023
US treasury securities	$	26,415	$	—	$	(298	)	$	26,117
US government agencies		192,787		1		(1,257	)		191,531
Corporate securities		137,009		—		(895	)		136,114
Total	$	356,211	$	1	$	(2,450	)	$	353,762

Description	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
December 31, 2022
US treasury securities	$	94,958	$	3	$	(1,111	)	$	93,850
US government agencies		180,967		25		(1,873	)		179,119
Corporate securities		220,119		25		(2,014	)		218,130
Total	$	496,044	$	53	$	(4,998	)	$	491,099