Marketable Debt Securities - Available-for-Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Aug. 27, 2022	Aug. 28, 2021
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	$ 115,327	$ 113,169
Available-For-Sale Marketable Securities, Gross Unrealized Gains	1	768
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(2,783)	(19)
Available-For-Sale Marketable Securities, Fair Value	112,545	113,918
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	15,293	23,650
Available-For-Sale Marketable Securities, Gross Unrealized Gains	1	329
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(298)	(2)
Available-For-Sale Marketable Securities, Fair Value	14,996	23,977
Government bonds
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	88,903	65,416
Available-For-Sale Marketable Securities, Gross Unrealized Gains		338
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(1,963)	(2)
Available-For-Sale Marketable Securities, Fair Value	86,940	65,752
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	4,600	6,552
Available-For-Sale Marketable Securities, Gross Unrealized Gains		58
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(243)	(8)
Available-For-Sale Marketable Securities, Fair Value	4,357	6,602
Asset-backed securities and other
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	6,531	17,551
Available-For-Sale Marketable Securities, Gross Unrealized Gains		43
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(279)	(7)
Available-For-Sale Marketable Securities, Fair Value	$ 6,252	$ 17,587

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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