Commitments and Contingencies (Details 1) (Foreign Tax Contingencies [Member], USD $) In Millions, unless otherwise specified	Apr. 30, 2013	Oct. 31, 2012
Foreign Tax Contingencies [Member]
Income Tax Examination [Line Items]
Accrued liabilities related to contingencies	$ 2.0	$ 1.7

The amount of estimated penalties and interest accrued as of the balance sheet date arising from income tax examinations.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319

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