Financial Instruments (Tables)

6 Months Ended

Jun. 30, 2021

Financial Instruments, Owned, at Fair Value [Abstract]

Cash, Cash Equivalents, And Marketable Securities

The following table summarizes the Company’s cash, cash equivalents, and marketable securities and the fair value categorization of the financial instruments measured at fair value on a recurring basis:

	June 30,		December 31,
	2021		2020
	(In thousands)
Cash	$	28,078	$	28,832
Time deposits	3,698		4,176
Money market funds (Level 1)	193,652		129,627
Debt securities issued by the U.S. Treasury (Level 1)	906,492		1,013,679
Total	$	1,131,920	$	1,176,314
Cash and cash equivalents	$	216,497	$	401,194
Restricted cash (included in Other long-term assets)	8,931		9,407
Total Cash, cash equivalents, and restricted cash	225,428		410,601
Marketable securities	906,492		765,713
Total	$	1,131,920	$	1,176,314