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Restructuring (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Oct. 31, 2013 | Oct. 31, 2012
Severance |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | $ 1,569 |
General and administrative |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 1,627 | 286
General and administrative | Severance |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 1,569 | 286
General and administrative | Relocation |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 58 |
Yard operations |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | 18 | 39
Yard operations | Severance |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges |  |
Yard operations | Relocation |  |
Restructuring Cost and Reserve [Line Items] |  |
Restructuring Charges | $ 18 | $ 39

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Details
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