FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2022

Investments, Debt and Equity Securities [Abstract]

Schedule of Cash, Cash Equivalents and Available-for-Sale Securities by Significant Investment Category

The following tables show the Company’s cash, cash equivalents and available-for-sale securities by significant investment category for each period presented:


	June 30, 2022
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Aggregate Fair Value		Cash and Cash Equivalents		Short-term Marketable Securities (1)		Long-term Marketable Securities (2)
Level 1:
Cash	$	355,318	$	—	$	—	$	355,318	$	355,318	$	—	$	—

Level 2:
Money market instruments	264,484		—		—		264,484		264,484		—		—
Corporate debt securities	560,401		3		(12,450)		547,954		—		273,400		274,554
U.S. government agency securities	263,184		15		(2,734)		260,465		—		180,952		79,513
Commercial paper	33,107		—		(23)		33,084		—		33,084		—
Asset-backed securities	58,888		8		(633)		58,263		—		—		58,263
Foreign and other	2,562		124		(4)		2,682		—		2,509		173
Subtotal	1,182,626		150		(15,844)		1,166,932		264,484		489,945		412,503
Total	$	1,537,944	$	150	$	(15,844)	$	1,522,250	$	619,802	$	489,945	$	412,503


	December 31, 2021
	Amortized Cost		Gross Unrealized Gains		Gross Unrealized Losses		Aggregate Fair Value		Cash and Cash Equivalents		Short-term Marketable Securities (1)		Long-term Marketable Securities (2)
Level 1:
Cash	$	301,177	$	—	$	—	$	301,177	$	301,177	$	—	$	—

Level 2:
Money market instruments	285,099		—		—		285,099		285,099		—		—
Corporate debt securities	584,000		386		(2,086)		582,300		—		200,304		381,996
U.S. government agency securities	224,774		182		(325)		224,631		—		146,421		78,210
Commercial paper	68,384		—		—		68,384		1,000		67,384		—
Asset-backed securities	56,936		10		(95)		56,851		—		9,451		47,400
Foreign and other	3,097		141		(12)		3,226		—		3,039		187
Subtotal	1,222,290		719		(2,518)		1,220,491		286,099		426,599		507,793
Total	$	1,523,467	$	719	$	(2,518)	$	1,521,668	$	587,276	$	426,599	$	507,793

(1) The Company’s short-term marketable securities mature in one year or less.

(2) The Company’s long-term marketable securities mature between one and five years.