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Commitments And Contingencies (Tables)

3 Months Ended

Nov. 30, 2012

Commitments And Contingencies [Abstract]

Summary Of Undiscounted Environmental Remediation Liability Classifications

Environmental Remediation Liabilities
($ in thousands)		November 30,			November 30,			August 31,
Balance Sheet Location		2012			2011			2012
Other current liabilities		$	2,391		$	2,899		$	2,414
Other noncurrent liabilities			5,200			5,200			5,200
Total environmental remediation liabilities		$	7,591		$	8,099		$	7,614

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