CASH EQUIVALENTS AND MARKETABLE SECURITIES (Tables)

12 Months Ended

Dec. 31, 2021

Investments, Debt and Equity Securities [Abstract]

Marketable Securities

The table below summarizes the Company’s cash equivalents and marketable securities (in thousands):

	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Estimated Fair Value
December 31, 2021
Assets
Cash equivalents:
Money market funds	$	119,919	$	—	$	—	$	119,919
Total	119,919		—		—		119,919
Marketable securities:
U.S. government-sponsored entity debt securities	30,700		1		(87)		30,614
Commercial paper securities	105,792		7		(42)		105,757
Corporate debt securities	33,723		1		(42)		33,682
Certificates of deposit	45,116		1		(26)		45,091
Asset-backed securities	70,807		1		(107)		70,701
Total	286,138		11		(304)		285,845
Total cash equivalents and marketable securities	$	406,057	$	11	$	(304)	$	405,764
December 31, 2020
Assets
Cash equivalents:
Money market funds	$	53,165	$	—	$	—	$	53,165
Total	53,165		—		—		53,165
Marketable securities:
U.S. government-sponsored entity debt securities	257,284		19		(5)		257,298
Commercial paper securities	213,500		41		(8)		213,533
Corporate debt securities	59,575		16		(17)		59,574
Certificates of deposit	12,311		—		—		12,311
Asset-backed securities	17,905		10		(7)		17,908
Total	560,575		86		(37)		560,624
Total cash equivalents and marketable securities	$	613,740	$	86	$	(37)	$	613,789

Investments Classified by Contractual Maturity Date

The fair value of marketable securities by contractual maturity were as follows (in thousands):

	December 31,
	2021		2020
Maturing in one year or less	$	197,676	$	510,094
Maturing after one year through five years	88,169		50,530
Total	$	285,845	$	560,624