Marketable Securities - Available-for-Sale Marketable Securities (Detail) - USD ($) $ in Thousands	Aug. 29, 2015	Aug. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	$ 88,467	$ 85,138
Available-For-Sale Marketable Securities, Gross Unrealized Gains	108	210
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(148)	(93)
Available-For-Sale Marketable Securities, Fair Value	88,427	85,255
Corporate Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	34,859	37,265
Available-For-Sale Marketable Securities, Gross Unrealized Gains	51	137
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(40)	(15)
Available-For-Sale Marketable Securities, Fair Value	34,870	37,387
Government Bonds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	33,098	16,822
Available-For-Sale Marketable Securities, Gross Unrealized Gains	31	16
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(7)	(1)
Available-For-Sale Marketable Securities, Fair Value	33,122	16,837
Mortgage-Backed Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	9,287	8,791
Available-For-Sale Marketable Securities, Gross Unrealized Gains	17	22
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(99)	(77)
Available-For-Sale Marketable Securities, Fair Value	9,205	8,736
Asset-Backed Securities and Other [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-For-Sale Marketable Securities, Amortized Cost Basis	11,223	22,260
Available-For-Sale Marketable Securities, Gross Unrealized Gains	9	35
Available-For-Sale Marketable Securities, Gross Unrealized Losses	(2)
Available-For-Sale Marketable Securities, Fair Value	$ 11,230	$ 22,295

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 320

-SubTopic 10

-Section 25

-Paragraph 1

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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