Marketable Debt Securities - Available-for-Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Feb. 10, 2024	Aug. 26, 2023
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	$ 125,296	$ 123,887
Available-For-Sale Marketable Securities, Gross Unrealized Gains	491	17
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(1,578)	(2,391)
Available-For-Sale Marketable Securities, Fair Value	124,209	121,513
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	29,753	31,683
Available-For-Sale Marketable Securities, Gross Unrealized Gains	38	17
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(240)	(504)
Available-For-Sale Marketable Securities, Fair Value	29,551	31,196
Government bonds
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	62,189	63,747
Available-For-Sale Marketable Securities, Gross Unrealized Gains	449
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(1,107)	(1,440)
Available-For-Sale Marketable Securities, Fair Value	61,531	62,307
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	3,043	3,215
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(122)	(213)
Available-For-Sale Marketable Securities, Fair Value	2,921	3,002
Asset-backed securities and other
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	30,311	25,242
Available-For-Sale Marketable Securities, Gross Unrealized Gains	4
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(109)	(234)
Available-For-Sale Marketable Securities, Fair Value	$ 30,206	$ 25,008