Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of fair value hierarchy

The following table represents the estimated fair value of the Company’s financial assets and liabilities (in thousands):

	Fair Value at December 31, 2021						Fair Value at December 31, 2020
Assets	Level 1		Level 2		Level 3		Level 1		Level 2		Level 3
Money market funds (1)	$	361,822	$	—	$	—	$	96,116	$	—	$	—
Government-backed securities (1)	—		266,250		—		—		44,250		—
Treasury securities (2)	—		—		—		—		54,088		—
Corporate debt securities (3)	—		790,672		—		—		373,681		—
Agency securities	—		—		—		—		20,600		—
Total cash equivalents and marketable securities	$	361,822	$	1,056,922	$	—	$	96,116	$	492,619	$	—
Liabilities
Convertible notes payable	$	—	$	447,509	$	—	$	—	$	407,238	$	—

(1)Classified as cash and cash equivalents as of December 31, 2021 and 2020 (see Note 2).

(2)Includes $44,052 classified as cash and cash equivalents as of December 31, 2020 on the consolidated balance sheets.

(3)Includes $790,672 and $246,668 classified as cash and cash equivalents as of December 31, 2021 and 2020, respectively, on the consolidated balance sheets.