Commitments And Contingencies (Tables)

6 Months Ended

Feb. 29, 2012

Commitments And Contingencies [Abstract]

Undiscounted Environmental Remediation Liability

Environmental Remediation Liabilities
$ in thousands	February 29,		February 28,			August 31,
Balance Sheet Location		2012		2011		2011
Other current liabilities	$	2,737	$	1,206	$	1,540
Other noncurrent liabilities		5,200		-		-
Total environmental remediation liabilities	$	7,937	$	1,206	$	1,540