Identifiable Intangible and Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Nov. 30, 2014	Aug. 31, 2014
Intangible Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Net, Total	$ 34,344us-gaap_FiniteLivedIntangibleAssetsNet	$ 35,284us-gaap_FiniteLivedIntangibleAssetsNet
Intangible assets not subject to amortization	912	912
Nonqualified savings plan investments	10,338us-gaap_InvestmentsFairValueDisclosure	10,223us-gaap_InvestmentsFairValueDisclosure
Prepaid and other assets	8,998us-gaap_PrepaidExpenseAndOtherAssets	11,347us-gaap_PrepaidExpenseAndOtherAssets
Debt issuance costs, net	6,992us-gaap_DeferredFinanceCostsNet	7,602us-gaap_DeferredFinanceCostsNet
Assets held for sale	353	389
Total intangible and other assets	61,937	65,757
Customer Relationships
Intangible Assets by Major Class [Line Items]
Finite lived intangible assets gross	65,023	65,023
Accumulated amortization	(31,150)	(30,282)
Other Intangible Assets
Intangible Assets by Major Class [Line Items]
Finite lived intangible assets gross	3,610	3,699
Accumulated amortization	$ (3,139)	$ (3,156)

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Intangible Assets, Net And Other Assets (Excluding Goodwill)

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Amount classified as assets attributable to disposal group held for sale or disposed of.

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For an unclassified balance sheet, the carrying amount (net of accumulated amortization) as of the balance sheet date of capitalized costs associated with the issuance of debt instruments (for example, legal, accounting, underwriting, printing, and registration costs) that will be charged against earnings over the life of the debt instruments to which such costs pertain.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit.

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets.

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