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Marketable Debt Securities - Additional Information (Detail) $ in Thousands | 8 Months Ended |
--- | --- | ---
May 04, 2019 USD ($) Securities | Aug. 25, 2018 USD ($)
Investments, Debt and Equity Securities [Abstract] |  |
Available for sale securities debt maturity period range | less than one year to approximately three years |
Number of securities available for sale loss position | Securities | 84 |
Available-For-Sale Marketable Securities, Gross Unrealized Losses | $ 424 | $ 1,100
Marketable securities transferred | $ 87,500 |

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- Definition The total amount of cash and securities held by third party trustees pursuant to terms of debt instruments or other agreements as of the date of each statement of financial position presented, which can be used by the trustee only to pay the noncurrent portion of specified obligations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(b)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Number of investment positions in available-for-sale investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563 + Details
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