Fair value measurement (Tables)

9 Months Ended

Sep. 30, 2020

Fair value measurement

Schedule of financial assets and liabilities that are measured at fair value on a recurring basis

At September 30, 2020	Level 1		Level 2		Level 3		Total
Assets:
Money market accounts	$	32,519	$	—	$	—	$	32,519
Marketable securities		—		7,580		—		7,580
Total assets	$	32,519	$	7,580	$	—	$	40,099

At December 31, 2019		Level 1		Level 2		Level 3		Total
Assets:
Money market accounts	$	32,843	$	1,497	$	—	$	34,340
Marketable securities		6,262		33,952		—		40,214
Total assets	$	39,105	$	35,449	$	—	$	74,554