Range of amount to be paid or to be received to resolve the preacquisition contingency.

No definition available.

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- Definition

Business acquisition preacquisition contingency potential exposure fair value.

+ References

No definition available.

+ Details

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- Details

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 30

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 30

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7488404&loc=d3e6927-128479

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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

Amount of increase (decrease) of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

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- Definition

The increase (decrease) during the reporting period in the aggregate amount of expenses incurred but not yet paid.

+ 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 (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

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- Definition

The increase (decrease) during the reporting period in intangible assets (for example patents and licenses).

+ References

+ Details

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Acquisitions (Details Textual) (USD $)	3 Months Ended		9 Months Ended
Acquisitions (Details Textual) (USD $)	Apr. 30, 2014	Apr. 30, 2013	Apr. 30, 2014	Apr. 30, 2013
Business Acquisition [Line Items]
Business acquisition preacquisition contingency potential exposure fair value	$ 14,000,000		$ 14,000,000
Increase in goodwill	5,300,000
Increase in accrued liabilities	11,500,000
Increase in intangible assets	7,300,000
Minimum
Business Acquisition [Line Items]
Business acquisition preacquisition contingency, Range			7,000,000
Maximum
Business Acquisition [Line Items]
Business acquisition preacquisition contingency, Range			28,000,000
Acquired salvage vehicle and assets of an online marketing company [Member]
Business Acquisition [Line Items]
Acquisition price			$ 14,761,000	$ 34,933,000
Acquired salvage vehicle and assets of an online marketing company [Member] \| Covenants not to compete \| Minimum
Business Acquisition [Line Items]
Useful life of intangible assets			3 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Covenants not to compete \| Maximum
Business Acquisition [Line Items]
Useful life of intangible assets			8 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Supply contracts \| Minimum
Business Acquisition [Line Items]
Useful life of intangible assets			3 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Supply contracts \| Maximum
Business Acquisition [Line Items]
Useful life of intangible assets			8 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Customer relationships \| Minimum
Business Acquisition [Line Items]
Useful life of intangible assets			3 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Customer relationships \| Maximum
Business Acquisition [Line Items]
Useful life of intangible assets			8 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Trade names \| Minimum
Business Acquisition [Line Items]
Useful life of intangible assets			3 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Trade names \| Maximum
Business Acquisition [Line Items]
Useful life of intangible assets			8 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Licenses and databases \| Minimum
Business Acquisition [Line Items]
Useful life of intangible assets			3 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Licenses and databases \| Maximum
Business Acquisition [Line Items]
Useful life of intangible assets			8 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Software \| Minimum
Business Acquisition [Line Items]
Useful life of intangible assets			3 years
Acquired salvage vehicle and assets of an online marketing company [Member] \| Software \| Maximum
Business Acquisition [Line Items]
Useful life of intangible assets			8 years