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Restructuring (Details Textual) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jan. 31, 2014	Jan. 31, 2013
Restructuring and Related Activities (Details Textual) [Abstract]
Additional depreciation expenses recognized during current period	$ 2.8	$ 2.7
Data Centers
Restructuring and Related Activities (Details Textual) [Abstract]
Average useful lives of data center	60 months
Revised average useful lives of data center	45 months

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- Definition

This element represents the amount of additional depreciation expenses recognized during the period.

+ References

No definition available.

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- Definition

Describes the revised periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

No definition available.

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- Definition

Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6367646&loc=d3e18780-107790



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

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