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Summary of Significant Accounting Policies (Concentration of Risk) (Details) - Sales Revenue, Goods, Net [Member] - Customer Concentration Risk [Member]	12 Months Ended
	Aug. 29, 2015 dealerships states	Aug. 30, 2014	Aug. 31, 2013
Dealer 1 [Member]
Concentration Risk [Line Items]
Percent of revenue	17.90%	19.70%	26.50%
Number of dealerships (in dealerships) | dealerships	75
Number of states (in states)	28
Dealer 2 [Member]
Concentration Risk [Line Items]
Percent of revenue	15.00%	12.30%
Number of dealerships (in dealerships) | dealerships	11
Number of states (in states)	4

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

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



-Publisher FASB



-Name Accounting Standards Codification



-Topic 275



-SubTopic 10



-Section 50



-Paragraph 18



-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592



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



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-Name Accounting Standards Codification



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-Name Accounting Standards Codification



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-Paragraph 21



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- Definition

The number of states the entity operates in as of the balance sheet date.

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Represents the number of stores.

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