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Financial Instruments (Tables)

12 Months Ended

Dec. 31, 2018

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,
	2018				2017
	(In thousands)
Cash	$	37,190			$	135,092
Time deposits	3,810				3,682
Money market funds (Level 1)	120,832				116,068
Debt securities issued by the U.S. Treasury (Level 1)	1,117,175				2,169,197
Total	$	1,279,007			$	2,424,039
Cash and cash equivalents	$	357,415			$	465,851
Restricted cash (included in Other long-term assets)	9,338				9,288
Total Cash, cash equivalents, and restricted cash	366,753				475,139
Marketable securities	912,254				1,948,900
Total	$	1,279,007			$	2,424,039

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- Definition

Tabular disclosure of the components of cash, cash equivalents, and investments.

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- Definition

Cash, Cash Equivalents, And Marketable Securities [Abstract]

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