Investments - Amortized Cost and Fair Value of Available-for-Sale Investments (Detail) - USD ($) $ in Thousands	Jun. 27, 2026	Dec. 27, 2025
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 150,455	$ 147,517
Gross Unrealized Gains	336	1,147
Gross Unrealized Losses	1,691	1,651
Fair Value	149,100	147,013
Money market investments
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	8,886	15,046
Gross Unrealized Gains	0	0
Gross Unrealized Losses	0	0
Fair Value	8,886	15,046
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	14,690	19,380
Gross Unrealized Gains	13	43
Gross Unrealized Losses	1,025	1,128
Fair Value	13,678	18,295
Corporate bonds, commercial paper and direct obligations of government agencies
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	104,156	103,425
Gross Unrealized Gains	323	1,097
Gross Unrealized Losses	659	523
Fair Value	103,820	103,999
U.S. Treasury obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	22,723	9,666
Gross Unrealized Gains	0	7
Gross Unrealized Losses	7	0
Fair Value	$ 22,716	$ 9,673

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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- Definition

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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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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