Schedule of Unrealized Loss on Available-for-Sale Investments (Detail) - USD ($) $ in Thousands	Mar. 26, 2022	Dec. 25, 2021
Debt Securities, Available-for-sale [Line Items]
Available-for-sale investments with unrealized losses, Less than 12 months, Fair Value	$ 119,090	$ 94,621
Available-for-sale investments with unrealized losses, Less than 12 months, Unrealized Loss	6,241	1,312
Available-for-sale investments with unrealized losses, 12 months or longer, Fair Value	4,147
Available-for-sale investments with unrealized losses, 12 months or longer, Unrealized Loss	435
Available-for-sale investments with unrealized losses, Fair Value, Total	123,237	94,621
Available-for-sale investments with unrealized losses, Unrealized Loss, Total	6,676	1,312
Asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale investments with unrealized losses, Less than 12 months, Fair Value	19,824	22,095
Available-for-sale investments with unrealized losses, Less than 12 months, Unrealized Loss	1,435	346
Available-for-sale investments with unrealized losses, Fair Value, Total	19,824	22,095
Available-for-sale investments with unrealized losses, Unrealized Loss, Total	1,435	346
Corporate bonds and direct obligations of government agencies
Debt Securities, Available-for-sale [Line Items]
Available-for-sale investments with unrealized losses, Less than 12 months, Fair Value	96,962	72,526
Available-for-sale investments with unrealized losses, Less than 12 months, Unrealized Loss	4,768	966
Available-for-sale investments with unrealized losses, 12 months or longer, Fair Value	4,147
Available-for-sale investments with unrealized losses, 12 months or longer, Unrealized Loss	435
Available-for-sale investments with unrealized losses, Fair Value, Total	101,109	72,526
Available-for-sale investments with unrealized losses, Unrealized Loss, Total	5,203	$ 966
U.S. Treasury obligations
Debt Securities, Available-for-sale [Line Items]
Available-for-sale investments with unrealized losses, Less than 12 months, Fair Value	2,304
Available-for-sale investments with unrealized losses, Less than 12 months, Unrealized Loss	38
Available-for-sale investments with unrealized losses, Fair Value, Total	2,304
Available-for-sale investments with unrealized losses, Unrealized Loss, Total	$ 38

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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