Fair Value of Financial Instruments - Available-for-Sale Investments (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Fair Value of Financial Instruments
Marketable Securities, Amortized Cost Basis	$ 98,653
Gross Unrealized Gains	30	$ 206
Gross Unrealized Losses	(347)	(1,435)
Marketable Securities, Fair Value	98,336	211,720
Cash Equivalent, Fair Value	147,307	137,195
Total, Amortized Cost Basis	245,960	350,144
Total, Fair Value	245,643	348,915
Money market funds
Fair Value of Financial Instruments
Cash Equivalent, Amortized Cost Basis	147,307	137,195
Cash Equivalent, Fair Value	147,307	137,195
Corporate debt securities
Fair Value of Financial Instruments
Marketable Securities, Amortized Cost Basis	47,485	130,858
Gross Unrealized Gains	19	69
Gross Unrealized Losses	(182)	(880)
Marketable Securities, Fair Value	47,322	130,047
Government debt securities
Fair Value of Financial Instruments
Marketable Securities, Amortized Cost Basis	51,168	82,091
Gross Unrealized Gains	11	137
Gross Unrealized Losses	(165)	(555)
Marketable Securities, Fair Value	$ 51,014	$ 81,673

Debt Securities, Available-for-Sale And Cash Equivalents, Fair Value

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Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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).

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Fair value portion 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.

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Cash includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the customer may deposit additional funds at any time and effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid Investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal 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. Short-term investments, exclusive of cash equivalents, generally consist of marketable securities intended to be sold within one year (or the normal operating cycle if longer) and may include trading securities, available-for-sale securities, or held-to-maturity securities (if maturing within one year), as applicable.

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Amount of 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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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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