Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2020

Schedule of Assets Measured at Fair Value on Recurring Basis

The following table presents information about the Company’s financial assets measured at fair value on a recurring basis and indicates the level of the fair value hierarchy utilized to determine such fair values as of September 30, 2020 and December 31, 2019 (in thousands):

	Fair Value Measurements at September 30, 2020:
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents
Money market fund	$	17,208	$	—	$	—	$	17,208
Corporate bonds		—		13,788		—		13,788
Marketable securities, current
US treasuries		191,286		—		—		191,286
Corporate bonds		—		47,962		—		47,962
Marketable securities, non-current
US treasuries		154,696		—		—		154,696
Corporate bonds		—		32,768		—		32,768
Restricted cash		1,788		—		—		1,788
Total	$	364,978	$	94,518	$	—	$	459,496

	Fair Value Measurements at December 31, 2019:
	Level 1		Level 2		Level 3		Total
Assets:
Marketable securities	$	15,942	$	—	$	—	$	15,942
Restricted cash		1,774		—		—		1,774
Total	$	17,716	$	—	$	—	$	17,716