Cash, Cash Equivalents, and Investments - Components of Cash, Cash Equivalents, and Investments (Details) - USD ($) $ in Thousands	Apr. 04, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Cash	$ 207,313	$ 266,609
Commercial Paper, at Carrying Value	10,000	0
Money market instruments	25,375	2,464
Cash and cash equivalents	242,688	269,073
Current investments	143,233	103,240
Non-current investments	490,363	395,125
Total	876,284	767,438
Treasury Bills
Debt Securities, Available-for-sale [Line Items]
Current investments	66,261	35,403
Long-term investments	65,148	96,458
Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Current investments	50,410	32,714
Long-term investments	334,351	203,428
Asset-Backed Securities
Debt Securities, Available-for-sale [Line Items]
Current investments	16,645	25,160
Long-term investments	62,755	67,058
Agency Bonds
Debt Securities, Available-for-sale [Line Items]
Long-term investments	18,961	19,006
Municipal Bonds
Debt Securities, Available-for-sale [Line Items]
Current investments	1,296	1,303
Long-term investments	5,719	5,735
Sovereign Bonds
Debt Securities, Available-for-sale [Line Items]
Current investments	8,621	8,660
Long-term investments	$ 3,429	$ 3,440

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

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- Definition

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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Unsecured short-term debt instrument issued by corporations which are 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. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means 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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- Definition

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.

+ References

No definition available.

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