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Summary of Significant Accounting Policies (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Apr. 30, 2014
Debt Instrument, Year of Maturity	2019
Canyons Obligation [Member]
Debt Instrument, Fair Value Disclosure	$ 310,472
Debt Instrument, Year of Maturity	2063

X

- Definition

Debt Instrument, Year of Maturity

+ References

No definition available.

+ Details

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X

- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 10

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13433-108611



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 825

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=28364263&loc=d3e13476-108611

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