Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

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 March 31, 2021 and December 31, 2020 (in thousands):

	Fair Value Measurements at March 31, 2021:
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents
Money market fund	$	23,321	$	—	$	—	$	23,321
Marketable securities, current
US treasuries		201,758		—		—		201,758
Corporate bonds		—		78,681		—		78,681
Marketable securities, non-current
US treasuries		86,799		—		—		86,799
Corporate bonds		—		14,840		—		14,840
Restricted cash		1,590		—		—		1,590
Total	$	313,468	$	93,521	$	—	$	406,989

	Fair Value Measurements at December 31, 2020:
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents
Money market fund	$	19,943	$	—	$	—	$	19,943
Corporate bonds		—		10,499		—		10,499
Marketable securities, current
US treasuries		192,275		—		—		192,275
Corporate bonds		—		72,923		—		72,923
Marketable securities, non-current
US treasuries		132,589		—		—		132,589
Corporate bonds		—		29,942		—		29,942
Restricted cash		1,589		—		—		1,589
Total	$	346,396	$	113,364	$	—	$	459,760