Marketable Securities (Tables)

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Schedule of Marketable Securities

The table below summarizes the marketable securities:

	March 31, 2021
	Amortized Cost		Unrealized Gains		Unrealized Losses		Aggregate Fair Value
	(in thousands)
Money market funds	$	29,402	$	—	$	—	$	29,402
Cash equivalents	29,402		—		—		29,402
U.S. treasury securities	84,758		21		—		84,779
Corporate bonds	12,946		—		(4)		12,942
Commercial paper	49,966		—		—		49,966
Short-term investments	147,670		21		(4)		147,687
Total marketable securities	$	177,072	$	21	$	(4)	$	177,089

	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