Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2022

Marketable Securities [Abstract]

Summary of Available-for-Sale Debt Securities

The following table summarizes the available-for-sale debt securities held at March 31, 2022 and December 31, 2021 (in thousands):

Description	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
March 31, 2022
U.S. treasury securities	$	167,060	$	6	$	(397	)	$	166,669
US government agencies		89,615		—		(1,162	)		88,453
Corporate securities		236,092		—		(1,657	)		234,435
Total	$	492,767	$	6	$	(3,216	)	$	489,557

Description	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair Value
December 31, 2021
U.S. 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