Identifiable Intangible and Other Assets (Detail) (USD $) In Thousands, unless otherwise specified	Feb. 28, 2015	Aug. 31, 2014
Intangible Assets by Major Class [Line Items]
Finite-Lived Intangible Assets, Net, Total	$ 33,395us-gaap_FiniteLivedIntangibleAssetsNet	$ 35,284us-gaap_FiniteLivedIntangibleAssetsNet
Intangible assets not subject to amortization	912	912
Nonqualified savings plan investments	12,439us-gaap_InvestmentsFairValueDisclosure	10,223us-gaap_InvestmentsFairValueDisclosure
Prepaid and other assets	11,245us-gaap_PrepaidExpenseAndOtherAssets	11,736us-gaap_PrepaidExpenseAndOtherAssets
Debt issuance costs, net	6,395us-gaap_DeferredFinanceCostsNet	7,602us-gaap_DeferredFinanceCostsNet
Total Intangible and other assets, net	64,386	65,757
Customer Relationships
Intangible Assets by Major Class [Line Items]
Finite lived intangible assets gross	65,023	65,023
Accumulated amortization	(32,018)	(30,282)
Other Intangible Assets
Intangible Assets by Major Class [Line Items]
Finite lived intangible assets gross	3,455	3,699
Accumulated amortization	$ (3,065)	$ (3,156)

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Intangible Assets, Net And Other Assets (Excluding Goodwill)

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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.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 30

-Section 45

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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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-Publisher FASB

-Name Accounting Standards Codification

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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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- Definition

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

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

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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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