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Schedule of Reported Available for Sale Marketable Securities (Detail) - USD ($) $ in Thousands | Apr. 04, 2021 | Dec. 31, 2020
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Schedule of Available-for-sale Securities |  |
Available-for-sale marketable securities, Cost | $ 556,642 | $ 601,976
Available-for-sale marketable securities, Unrealized Gain | 5,072 | 9,077
Available-for-sale marketable securities, Unrealized (Loss) | (952) | (213)
Available-for-sale marketable securities, Fair Market Value | 560,762 | 610,840
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses | 65,454 | 70,418
Marketable securities |  |
Schedule of Available-for-sale Securities |  |
Available-for-sale marketable securities, Cost | 478,221 | 522,228
Available-for-sale marketable securities, Unrealized Gain | 95 | 92
Available-for-sale marketable securities, Unrealized (Loss) | (23) | (40)
Available-for-sale marketable securities, Fair Market Value | 478,293 | 522,280
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses | 47,468 | 61,806
Long-term marketable securities |  |
Schedule of Available-for-sale Securities |  |
Available-for-sale marketable securities, Cost | 78,421 | 79,748
Available-for-sale marketable securities, Unrealized Gain | 4,977 | 8,985
Available-for-sale marketable securities, Unrealized (Loss) | (929) | (173)
Available-for-sale marketable securities, Fair Market Value | 82,469 | 88,560
Available-for-sale marketable securities, Fair Market Value of Investments with Unrealized Losses | $ 17,986 | $ 8,612

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References No definition available. + Details
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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 + Details
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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. + References No definition available. + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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- Definition This item represents the aggregate fair value of investments in debt and equity securities in an unrealized loss position which are categorized neither as held-to-maturity nor trading securities. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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