Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Company's Available-for-Sale Securities by Level within Fair Value Hierarchy

The Company’s investments by level within the fair value hierarchy were as follows (in thousands):

As of March 31, 2021	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market fund	$	387,340	$	—	$	—	$	387,340
Short-term investments:
Corporate debt securities	—		11,952		—		11,952
Asset-backed securities	—		1,464		—		1,464
Total	$	387,340	$	13,416	$	—	$	400,756

As of December 31, 2020	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market fund	$	400,757	$	—	$	—	$	400,757
Short-term investments:
Corporate debt securities	—		22,409		—		22,409
U.S. government-related debt securities	—		5,003		—		5,003
Asset-backed securities	—		1,471		—		1,471
Total	$	400,757	$	28,883	$	—	$	429,640