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Acquisitions (Details Textual) (USD $) |  | 6 Months Ended |  | 6 Months Ended
--- | --- | --- | --- | ---
Jan. 31, 2014 | Jan. 31, 2014 Minimum | Jan. 31, 2014 Maximum | Jan. 31, 2013 Salvage vehicle auction business and online marketing company | Jan. 31, 2014 Salvage vehicle auction business and online marketing company | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Covenants not to compete Minimum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Covenants not to compete Maximum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Supply contracts Minimum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Supply contracts Maximum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Trade name Minimum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Trade name Maximum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Licenses and databases Minimum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Licenses and databases Maximum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Software Minimum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Software Maximum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Customer relationships Minimum | Jan. 31, 2014 Salvage vehicle auction business and online marketing company Customer relationships Maximum
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price |  |  |  | $ 34,933,000 | $ 14,761,000 |  |  |  |  |  |  |  |  |  |  |  |
Purchase price to acquire Businesses |  |  |  | 34,900,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Useful life of intangible assets |  |  |  |  |  | 3 years | 8 years | 3 years | 8 years | 3 years | 8 years | 3 years | 8 years | 3 years | 8 years | 3 years | 8 years
Business acquisition preacquisition contingency, Range |  | 7,000,000 | 28,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition preacquisition contingency potential exposure fair value | $ 14,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition Business acquisition preacquisition contingency potential exposure fair value. + References No definition available. + Details
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- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6910749&loc=d3e4845-128472 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=25498275&loc=d3e2207-128464 + Details
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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