Marketable Debt Securities - Available-for-Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Feb. 15, 2025	Aug. 31, 2024
Schedule of Available-for-sale Securities [Line Items]
Total	$ 122,951	$ 121,792
Available-For-Sale Marketable Securities, Gross Unrealized Gains	467	1,058
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(1,230)	(692)
Available-For-Sale Marketable Securities, Fair Value	122,188	122,158
Corporate debt securities
Schedule of Available-for-sale Securities [Line Items]
Total	30,636	32,355
Available-For-Sale Marketable Securities, Gross Unrealized Gains	61	183
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(236)	(78)
Available-For-Sale Marketable Securities, Fair Value	30,461	32,460
Government bonds
Schedule of Available-for-sale Securities [Line Items]
Total	55,152	50,251
Available-For-Sale Marketable Securities, Gross Unrealized Gains	292	483
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(680)	(493)
Available-For-Sale Marketable Securities, Fair Value	54,764	50,241
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Total	21,766	22,859
Available-For-Sale Marketable Securities, Gross Unrealized Gains	73	326
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(297)	(95)
Available-For-Sale Marketable Securities, Fair Value	21,542	23,090
Asset-backed securities and other
Schedule of Available-for-sale Securities [Line Items]
Total	15,397	16,327
Available-For-Sale Marketable Securities, Gross Unrealized Gains	41	66
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(17)	(26)
Available-For-Sale Marketable Securities, Fair Value	$ 15,421	$ 16,367