Fair Value Measurement (Tables)

9 Months Ended

Sep. 30, 2021

Fair Value Disclosures [Abstract]

Summary of Assets Measured at Fair Value on a Recurring Basis

The following table summarize the Company’s assets measured at fair value on a recurring basis, by level, within the fair value hierarchy (in thousands):

	September 30, 2021
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market fund	$	41,311	$	—	$	—	$	41,311
Total cash equivalents	41,311		—		—		41,311
Short-term investments:
Money market fund	7		—		—		7
Commercial paper	—		139,181		—		139,181
Corporate debt securities	—		128,113		—		128,113
Asset-back securities	94		—		—		94
Total short-term investments	101		267,294		—		267,395
Total assets measured at fair value	$	41,412	$	267,294	$	—	$	308,706

	December 31, 2020
	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market fund	$	74,107	$	—	$	—	$	74,107
Treasury bill and U.S. government and agency securities	19,999		—		—		19,999
Corporate debt securities	—		2,003		—		2,003
Commercial paper	—		33,295		—		33,295
Total cash equivalents	94,106		35,298		—		129,404
Short-term investments:
Commercial paper	—		122,265		—		122,265
Corporate debt securities	—		23,371		—		23,371
Total short-term investments	—		145,636		—		145,636
Total assets measured at fair value	$	94,106	$	180,934	$	—	$	275,040