Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2020

Financial Instruments

Schedule of assets measured fair value on recurring basis

Below is a summary of assets and liabilities measured at fair value on a recurring basis (in thousands):

	As of December 31, 2020
	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Cash and cash equivalents:
Money market funds	$	22,999	$	—	$	—	$	22,999
Short-term investments:
Reverse repurchase agreements		—		20,000		—		20,000
Total assets	$	22,999	$	20,000	$	—	$	42,999

	As of December 31, 2019
	Quoted Prices		Significant		Significant
	in Active		Observable		Unobservable
	Markets		Inputs		Inputs
	(Level 1)		(Level 2)		(Level 3)		Total
Assets:
Cash and cash equivalents:
Money market funds	$	5,432	$	—	$	—	$	5,432
Corporate debt securities		—		1,937		—		1,937
Short-term investments:
Commercial paper		—		1,993		—		1,993
Corporate debt securities		—		3,352		—		3,352
Reverse repurchase agreements		—		21,000		—		21,000
Total assets	$	5,432	$	28,282	$	—	$	33,714