Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Estimated Fair Value of Our Cash Equivalents and Marketable Securities

The following table summarizes the estimated fair value of our cash equivalents and marketable securities.

	As of December 31, 2021
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Financial assets:
Money market funds	$	262,679	$	—	$	—	$	262,679
U.S treasury securities	$	21,926	$	—	$	—	$	21,926
Corporate securities	$	—	$	80,389	$	—	$	80,389
Total financial assets	$	284,605	$	80,389	$	—	$	364,994

	As of December 31, 2020
(in thousands)	(Level 1)		(Level 2)		(Level 3)		Total
Financial assets:
Money market funds	$	196,521	$	—	$	—	$	196,521

	As of December 31, 2021
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Estimated Fair Value
Cash equivalents:
Money market funds	$	262,679	$	—	$	—		$	262,679
Marketable securities:
U.S treasury securities	$	21,999			$	(74	)	$	21,925
Corporate securities	$	80,506	$	—	$	(117	)	$	80,389

	As of December 31, 2020
(in thousands)	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
Cash equivalents:
Money market funds	$	196,521	$	—	$	—	$	196,521