Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Schedule of assets measured at fair value on recurring basis

The following tables summarize assets that are measured at fair value on a recurring basis:

	September 30, 2021
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents
Money market funds	$	147,026	$	—	$	—	$	147,026
Commercial paper	—		9,998		—		9,998
Total cash equivalents	$	147,026	$	9,998	$	—	$	157,024
Short-term investments
Commercial paper	$	—	$	141,693	$	—	$	141,693
Corporate bonds	—		22,797		—		22,797
Asset backed securities	—		14,923		—		14,923
Certificates of deposit	—		10,000		—		10,000
Supranational bonds	—		13,158		—		13,158
U.S. Treasury and agency obligations	—		13,470		—		13,470
Total short-term investments	$	—	$	216,041	$	—	$	216,041

	December 31, 2020
(in thousands)	Level 1		Level 2		Level 3		Total
Cash equivalents
Money market funds	$	44,153	$	—	$	—	$	44,153
Commercial paper	—		4,500		—		4,500
Total cash equivalents	$	44,153	$	4,500	$	—	$	48,653
Short-term investments
Commercial paper	$	—	$	71,425	$	—	$	71,425
Corporate bonds	—		4,505		—		4,505
U.S. Treasury and agency obligations	—		37,693		—		37,693
Total short-term investments	$	—	$	113,623	$	—	$	113,623