Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2020

Fair Value of Financial Instruments

Summary of financial assets and liabilities subject to fair value measurements on a recurring basis

	March 31, 2020
	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	85,176	$	—	$	—	$	85,176
Certificates of deposit		2,644		—		—		2,644
Commercial paper		—		19,544		—		19,544
Corporate debt securities		—		16,400		—		16,400
U.S. Treasury securities		31,217		—		—		31,217
U.S. Agency bonds		—		10,015		—		10,015
	$	119,037	$	45,959	$	—	$	164,996
	December 31, 2019
	Level 1		Level 2		Level 3		Total
Assets
Money market funds	$	152,770	$	—	$	—	$	152,770
Certificates of deposit		1,950		—		—		1,950
Corporate debt securities		—		3,459		—		3,459
U.S. Treasury securities		20,052		—		—		20,052
Total	$	174,772	$	3,459	$	—	$	178,231