Fair Value Measurements (Tables)

9 Months Ended

Sep. 30, 2020

Fair Value Measurements

Schedule of fair value hierarchy for its assets and liabilities that are measured at fair value on a recurring basis

	Fair Value Measurements at
	September 30, 2020 Using:
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	177,940	$	—	$	—	$	177,940
Restricted cash:
Money market funds		1,292		—		—		1,292
Marketable securities:
U.S. Treasury notes		—		141,452		—		141,452
	$	179,232	$	141,452	$	—	$	320,684

	Fair Value Measurements at
	December 31, 2019 Using:
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market funds	$	24,281	$	—	$	—	$	24,281
Restricted cash:
Money market funds		1,292		—		—		1,292
	$	25,573	$	—	$	—	$	25,573