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Description of Business and Summary of Significant Accounting Policies (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Apr. 30, 2014	Apr. 30, 2014 Segment
Description Of Business and Summary Of Significant Accounting Policies [Line Items]
Impairment of long-lived assets	$ 29,104	$ 29,104
Tax benefits realized upon ultimate settlement, Description		The second step is to measure the tax benefit as the largest amount that is more than 50% likely to be realized upon ultimate settlement.
Number of operating segments		2
Number of reportable segment		1
Interest Rate Swap
Description Of Business and Summary Of Significant Accounting Policies [Line Items]
Number of interest rate derivatives held	2	2

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- Definition

Amount recognized as an operating expense or loss during the period to reduce the carrying amount of a project that has been impaired but not abandoned.

+ 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



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-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228

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Number of interest rate derivative instruments held by the entity at the reporting date.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 815

-SubTopic 10

-Section 50

-Paragraph 1B

-URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959



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-Name Accounting Standards Codification

-Topic 815

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-Section 50

-Paragraph 1A

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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Description of material events or transactions not otherwise specified in the taxonomy pertaining to income taxes that would be relevant to the user of the financial statements.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 14

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32705-109319

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