Marketable Debt Securities - Available-for-Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Feb. 11, 2023	Aug. 27, 2022
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	$ 125,877	$ 115,327
Available-For-Sale Marketable Securities, Gross Unrealized Gains	2	1
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(2,941)	(2,783)
Available-For-Sale Marketable Securities, Fair Value	122,938	112,545
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	12,789	15,293
Available-For-Sale Marketable Securities, Gross Unrealized Gains		1
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(289)	(298)
Available-For-Sale Marketable Securities, Fair Value	12,500	14,996
Government bonds
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	90,877	88,903
Available-For-Sale Marketable Securities, Gross Unrealized Gains	1
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(2,101)	(1,963)
Available-For-Sale Marketable Securities, Fair Value	88,777	86,940
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	4,005	4,600
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(267)	(243)
Available-For-Sale Marketable Securities, Fair Value	3,738	4,357
Asset-backed securities and other
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	18,206	6,531
Available-For-Sale Marketable Securities, Gross Unrealized Gains	1
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(284)	(279)
Available-For-Sale Marketable Securities, Fair Value	$ 17,923	$ 6,252

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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