Investments (Tables)

3 Months Ended

Mar. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Summary of Investments Classified as Available-For-Sale

Our investments, which are all classified as available-for-sale, consisted of the following:

	As of March 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(in thousands)
Description:
U.S. government agencies	55,388		5		—		55,393
Commercial paper	27,676		—		—		27,676
Corporate bonds	27,648		16		(7)		27,657
Asset-backed securities	2,403		—		—		2,403
Total	$	113,115	$	21	$	(7)	$	113,129

	As of December 31, 2020
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Fair Value
	(in thousands)
Description:
U.S. government agencies	$	83,596	$	3	$	(12)	$	83,587
Corporate bonds	24,162		31		(1)		24,192
Commercial paper	34,766		—		—		34,766
Agency bonds	3,998		1		—		3,999
Asset-backed securities	2,419		—		—		2,419
Total	$	148,941	$	35	$	(13)	$	148,963