Cash, Cash Equivalents, and Investments - Components of Cash, Cash Equivalents, and Investments (Detail) - USD ($) $ in Thousands	Mar. 29, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Cash	$ 225,207	$ 155,498
Money market instruments	13,990	15,933
Cash and cash equivalents	239,197	171,431
Current investments	159,244	240,470
Non-current investments	446,955	433,452
Total	845,396	845,353
Treasury Bills
Debt Securities, Available-for-sale [Line Items]
Current investments	19,763	92,914
Long-term investments	190,693	216,334
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Current investments	54,937	65,624
Long-term investments	177,869	146,474
Asset-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Current investments	69,956	66,680
Long-term investments	51,395	46,403
Certificate of deposit
Debt Securities, Available-for-sale [Line Items]
Current investments	4,121	4,328
Sovereign bonds
Debt Securities, Available-for-sale [Line Items]
Current investments	3,487	6,294
Sovereign Bonds
Debt Securities, Available-for-sale [Line Items]
Long-term investments	21,083	16,005
Agency Bonds
Debt Securities, Available-for-sale [Line Items]
Long-term investments	5,915	5,914
Municipal Bonds
Debt Securities, Available-for-sale [Line Items]
Current investments	6,980	4,630
Long-term investments	$ 0	$ 2,322

Cash, cash equivalents, short term and long term investments.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as current.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), classified as noncurrent.

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- Definition

Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle).

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Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

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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.

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