Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis by Level Within Fair Value Hierarchy

The following tables present the Company’s assets and liabilities that are measured at fair value on a recurring basis by level within the fair value hierarchy (in thousands):

	March 31, 2022
	Level 1		Level 2		Level 3		Total
Money market funds	$	53,239	$	—	$	—	$	53,239
US treasuries		67,721		—		—		67,721
Government treasury and agency securities		—		6,020		—		6,020
Corporate securities and commercial paper		—		175,822		—		175,822
Total assets measured at fair value	$	120,960	$	181,842	$	—	$	302,802

	December 31, 2021
	Level 1		Level 2		Level 3		Total
Money market funds	$	115,410	$	—	$	—	$	115,410
US treasuries		24,053		—		—		24,053
Government treasury and agency securities		—		7,600		—		7,600
Corporate securities and commercial paper		—		171,842		—		171,842
Total assets measured at fair value	$	139,463	$	179,442	$	—	$	318,905

Changes In Fair Values of Convertible Preferred Stock Warrants and Common Stock Warrants, Classified as Level 3 Financial Liabilities

The following table presents the changes in fair values of the Company’s convertible preferred stock warrants and common stock warrants, classified as level 3 financial liabilities (in thousands):

	Three Months Ended March 31,
	2022		2021
Beginning balance	$	—	$	314
Change in fair value		—		(8	)
Reclassification of fair value of warrants to    equity upon the net exercise of warrants		—		—
Ending balance	$	—	$	306