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Commitments And Contingencies (Tables) | 3 Months Ended
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May 31, 2012
Commitments And Contingencies [Abstract] |
Undiscounted Environmental Remediation Liability |
Environmental Remediation Liabilities |
$ in thousands |  | May 31, |  | May 31, |  | August 31, |
Balance Sheet Location |  | 2012 |  | 2011 |  | 2011 |
Other current liabilities |  | $ | 2,559 |  | $ | 1,518 |  | $ | 1,540 |
Other noncurrent liabilities |  |  | 5,200 |  |  | - |  |  | - |
Total environmental remediation liabilities |  | $ | 7,759 |  | $ | 1,518 |  | $ | 1,540 |

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- Definition Tabular disclosure of material liabilities for remediation, site restoration, postclosure, monitoring commitments, or other exit costs that may occur on the sale, disposal or abandonment of a property as a result of unanticipated contamination of the assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.Y.Q4) -URI http://asc.fasb.org/extlink&oid=6572457&loc=d3e149879-122751 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section Y -Paragraph Question 4 + Details
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