Marketable Debt Securities - Available-for-Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Nov. 18, 2023	Aug. 26, 2023
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	$ 126,055	$ 123,887
Available-For-Sale Marketable Securities, Gross Unrealized Gains	475	17
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(2,475)	(2,391)
Available-For-Sale Marketable Securities, Fair Value	124,055	121,513
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	30,998	31,683
Available-For-Sale Marketable Securities, Gross Unrealized Gains		17
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(477)	(504)
Available-For-Sale Marketable Securities, Fair Value	30,521	31,196
Government bonds
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	63,885	63,747
Available-For-Sale Marketable Securities, Gross Unrealized Gains	475
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(1,655)	(1,440)
Available-For-Sale Marketable Securities, Fair Value	62,705	62,307
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	2,838	3,215
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(151)	(213)
Available-For-Sale Marketable Securities, Fair Value	2,687	3,002
Asset-backed securities and other
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	28,334	25,242
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(192)	(234)
Available-For-Sale Marketable Securities, Fair Value	$ 28,142	$ 25,008