Marketable Debt Securities - Available-for-Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Aug. 31, 2024	Aug. 26, 2023
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	$ 121,792	$ 123,887
Available-For-Sale Marketable Securities, Gross Unrealized Gains	1,058	17
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(692)	(2,391)
Available-For-Sale Marketable Securities, Fair Value	122,158	121,513
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	32,355	31,683
Available-For-Sale Marketable Securities, Gross Unrealized Gains	183	17
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(78)	(504)
Available-For-Sale Marketable Securities, Fair Value	32,460	31,196
Government bonds
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	50,251	63,747
Available-For-Sale Marketable Securities, Gross Unrealized Gains	483
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(493)	(1,440)
Available-For-Sale Marketable Securities, Fair Value	50,241	62,307
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	22,859	3,215
Available-For-Sale Marketable Securities, Gross Unrealized Gains	326
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(95)	(213)
Available-For-Sale Marketable Securities, Fair Value	23,090	3,002
Asset-backed securities and other
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	16,327	25,242
Available-For-Sale Marketable Securities, Gross Unrealized Gains	66
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(26)	(234)
Available-For-Sale Marketable Securities, Fair Value	$ 16,367	$ 25,008