Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2020

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 September 30, 2020	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market fund	$	161,866	$	—	$	—	$	161,866
Short-term investments:
Corporate debt securities	—		43,045		—		43,045
U.S. government-related debt securities	—		15,052		—		15,052
Asset-backed securities	—		1,477		—		1,477
Total	$	161,866	$	59,574	$	—	$	221,440
As of December 31, 2019	Level 1		Level 2		Level 3		Total
Cash equivalents:
Money market fund	$	22,152	$	—	$	—	$	22,152
Short-term investments:
Corporate debt securities	—		78,330		—		78,330
U.S. government-related debt securities	—		27,003		—		27,003
Asset-backed securities	—		11,971		—		11,971
Corporate equity securities	10,518		—		—		10,518
Total	$	32,670	$	117,304	$	—	$	149,974