Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2019

Cash, Cash Equivalents And Marketable Securities [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:

	As of December 31,
	2019		2018
	(In thousands)
Cash	$	33,238	$	37,190
Time deposits	3,924		3,810
Money market funds (Level 1)	149,624		120,832
Debt securities issued by the U.S. Treasury (Level 1)	1,040,678		1,117,175
Total	$	1,227,464	$	1,279,007
Cash and cash equivalents	$	508,196	$	357,415
Restricted cash (included in Other long-term assets)	9,405		9,338
Total Cash, cash equivalents, and restricted cash	517,601		366,753
Marketable securities	709,863		912,254
Total	$	1,227,464	$	1,279,007