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Marketable Debt Securities - Available-for-Sale Marketable Securities (Detail) - USD ($) $ in Thousands | May 10, 2025 | Aug. 31, 2024
--- | --- | ---
Schedule of Available-for-sale Securities [Line Items] |  |
Total | $ 121,215 | $ 121,792
Available-For-Sale Marketable Securities, Gross Unrealized Gains | 741 | 1,058
Available-For-Sale Marketable Securities, Gross Unrealized Losses | (852) | (692)
Available-For-Sale Marketable Securities, Fair Value | 121,104 | 122,158
Corporate debt securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total | 26,081 | 32,355
Available-For-Sale Marketable Securities, Gross Unrealized Gains | 92 | 183
Available-For-Sale Marketable Securities, Gross Unrealized Losses | (195) | (78)
Available-For-Sale Marketable Securities, Fair Value | 25,978 | 32,460
Government bonds |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total | 58,790 | 50,251
Available-For-Sale Marketable Securities, Gross Unrealized Gains | 501 | 483
Available-For-Sale Marketable Securities, Gross Unrealized Losses | (423) | (493)
Available-For-Sale Marketable Securities, Fair Value | 58,868 | 50,241
Mortgage-backed securities |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total | 22,432 | 22,859
Available-For-Sale Marketable Securities, Gross Unrealized Gains | 108 | 326
Available-For-Sale Marketable Securities, Gross Unrealized Losses | (215) | (95)
Available-For-Sale Marketable Securities, Fair Value | 22,325 | 23,090
Asset-backed securities and other |  |
Schedule of Available-for-sale Securities [Line Items] |  |
Total | 13,912 | 16,327
Available-For-Sale Marketable Securities, Gross Unrealized Gains | 40 | 66
Available-For-Sale Marketable Securities, Gross Unrealized Losses | (19) | (26)
Available-For-Sale Marketable Securities, Fair Value | $ 13,933 | $ 16,367

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 + Details
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- Definition Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479130/326-30-45-1 + Details
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