CASH AND CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)

9 Months Ended

Sep. 30, 2022

Cash and Cash Equivalents [Abstract]

Summary of Cash and Cash Equivalents and Marketable Securities

Cash and cash equivalents and marketable securities consisted of the following as of September 30, 2022 and December 31, 2021:

	September 30, 2022		December 31, 2021
Cash and cash equivalents	$	333,279	$	690,959
Marketable securities, current		169,428		—
Marketable securities, non-current		9,751		—
Total cash and cash equivalents and marketable securities	$	512,458	$	690,959

Schedule of Cash Equivalents and Marketable Securities

As of September 30, 2022, cash equivalents and marketable securities consisted of the following:

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses			Fair Value		Cash Equivalents		Marketable Securities
Money market accounts	$	240,513	$	—	$	—		$	240,513	$	240,513	$	—
Certificates of deposit		41,903		3		(155	)		41,751		3,998		37,753
Commercial paper		80,348		4		(117	)		80,235		26,743		53,492
Corporate debt securities		67,188		2		(484	)		66,706		2,437		64,269
Yankee bonds		4,784		—		(33	)		4,751		—		4,751
U.S. Treasury securities		27,431		3		(9	)		27,425		22,484		4,941
U.S. government agency bonds		6,886		—		(43	)		6,843		—		6,843
Mortgage- and asset-backed securities		7,156		—		(26	)		7,130		—		7,130
Total	$	476,209	$	12	$	(867	)	$	475,354	$	296,175	$	179,179

Summary of Cash Equivalents and Marketable Securities with Unrealized Losses

The following table presents the Company's cash equivalents and marketable securities with unrealized losses by investment category as of September 30, 2022:

	Less than 12 Months
	Fair Value		Unrealized Losses
Certificates of deposit	$	37,325	$	(155	)
Commercial paper		77,827		(117	)
Corporate debt securities		61,451		(484	)
Yankee bonds		4,751		(33	)
U.S. Treasury securities		4,941		(9	)
U.S. government agency bonds		6,843		(43	)
Mortgage- and asset-backed securities		7,130		(26	)
Total	$	200,268	$	(867	)

Summary of Contractual Maturities of Cash Equivalents and Marketable Securities

The following table summarizes the contractual maturities of the Company’s cash equivalents and marketable securities as of September 30, 2022:

	Amortized Cost		Fair Value
Due within one year	$	466,397	$	465,603
Due within one to four years		9,812		9,751
Total	$	476,209	$	475,354