Schedule of Reported Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Oct. 01, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 1,425,947	$ 1,304,711
Available-for-sale marketable securities, Unrealized Gain	6,100	2,977
Available-for-sale marketable securities, Unrealized (Loss)	(2,274)	(2,821)
Available-for-sale marketable securities, Fair Market Value	1,429,773	1,304,867
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	1,243,640	732,979
Marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	1,218,752	871,321
Available-for-sale marketable securities, Unrealized Gain	65	134
Available-for-sale marketable securities, Unrealized (Loss)	(987)	(431)
Available-for-sale marketable securities, Fair Market Value	1,217,830	871,024
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	1,088,881	423,128
Long-term marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	207,195	433,390
Available-for-sale marketable securities, Unrealized Gain	6,035	2,843
Available-for-sale marketable securities, Unrealized (Loss)	(1,287)	(2,390)
Available-for-sale marketable securities, Fair Market Value	211,943	433,843
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 154,759	$ 309,851

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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