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Schedule of Reported Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Jul. 04, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	$ 421,469	$ 601,976
Available-for-sale marketable securities, Unrealized Gain	6,684	9,077
Available-for-sale marketable securities, Unrealized (Loss)	(630)	(213)
Available-for-sale marketable securities, Fair Market Value	427,523	610,840
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	131,946	70,418
Marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	282,061	522,228
Available-for-sale marketable securities, Unrealized Gain	93	92
Available-for-sale marketable securities, Unrealized (Loss)	(33)	(40)
Available-for-sale marketable securities, Fair Market Value	282,121	522,280
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	59,990	61,806
Long-term marketable securities
Schedule of Available-for-sale Securities
Available-for-sale marketable securities, Cost	139,408	79,748
Available-for-sale marketable securities, Unrealized Gain	6,591	8,985
Available-for-sale marketable securities, Unrealized (Loss)	(597)	(173)
Available-for-sale marketable securities, Fair Market Value	145,402	88,560
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses	$ 71,956	$ 8,612

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- Definition

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

+ References

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- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563

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- Definition

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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