Marketable Debt Securities - Available-for-Sale Marketable Securities (Detail) - USD ($) $ in Thousands	May 04, 2024	Aug. 26, 2023
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	$ 120,190	$ 123,887
Available-For-Sale Marketable Securities, Gross Unrealized Gains	389	17
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(1,519)	(2,391)
Available-For-Sale Marketable Securities, Fair Value	119,060	121,513
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	28,377	31,683
Available-For-Sale Marketable Securities, Gross Unrealized Gains	13	17
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(270)	(504)
Available-For-Sale Marketable Securities, Fair Value	28,120	31,196
Government bonds
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	56,502	63,747
Available-For-Sale Marketable Securities, Gross Unrealized Gains	376
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(1,048)	(1,440)
Available-For-Sale Marketable Securities, Fair Value	55,830	62,307
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	2,771	3,215
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(118)	(213)
Available-For-Sale Marketable Securities, Fair Value	2,653	3,002
Asset-backed securities and other
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	32,540	25,242
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(83)	(234)
Available-For-Sale Marketable Securities, Fair Value	$ 32,457	$ 25,008