v2.4.0.6

Contingencies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Feb. 29, 2012	Jan. 21, 2010
Contingencies [Abstract]
Number of subsidiaries alleging infringement		2
Number of defendants alleging infringement		19
Settlement amount with JuxaComm	$ 0.9

X

- Definition

Number of defendants alleging infringement other than subsidiaries.

+ References

No definition available.

+ Details

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X

- Definition

Number of subsidiaries alleging infringement.

+ References

No definition available.

+ Details

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X

- Definition

The amount of cash paid for the settlement of litigation or for other legal issues during the period.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 95

-Paragraph 27

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 25

-Subparagraph (g)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3536-108585

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