Income Taxes Components of Income before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2014
Components of Income Before Income Taxes [Abstract]
Current Fiscal Year End Date	--07-31
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 231,756	$ 142,190	$ 45,895
Income (Loss) from Continuing Operations before Income Taxes, Foreign	10,863	7,138	(1,823)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest	$ 242,619	$ 149,328	$ 44,072

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- Definition

Components of Income Before Income Taxes [Abstract]

+ References

No definition available.

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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- Definition

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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