Marketable Securities (Tables)

9 Months Ended

Sep. 30, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

The table below summarizes the marketable securities:

	September 30, 2021
	Amortized Cost		Unrealized Gains		Unrealized Losses		Aggregate Fair Value
	(in thousands)
Money market funds	$	54,218	$	—	$	—	$	54,218
Cash equivalents	54,218		—		—		54,218
U.S. treasury securities	52,140		3		—		52,143
Corporate bonds	15,373		—		(3)		15,370
Commercial paper	33,475		—		—		33,475
Short-term investments	100,988		3		(3)		100,988
Total marketable securities	$	155,206	$	3	$	(3)	$	155,206

	December 31, 2020
	Amortized Cost		Unrealized Gains		Unrealized Losses		Aggregate Fair Value
	(in thousands)
Money market funds	$	45,948	$	—	$	—	$	45,948
Commercial paper	1,400		—		—		1,400
Cash equivalents	47,348		—		—		47,348
U.S. treasury securities	74,779		4		(7)		74,776
Corporate bonds	8,940		4		(6)		8,938
Commercial paper	59,137		—		—		59,137
Short-term investments	142,856		8		(13)		142,851
Total marketable securities	$	190,204	$	8	$	(13)	$	190,199