Consolidated Statements of Cash Flows (Parenthetical) (USD $)	3 Months Ended	9 Months Ended
Jul. 31, 2013	Jul. 31, 2012	Jul. 31, 2013	Jul. 31, 2012
Statement of Cash Flows [Abstract]
Accumulated depreciation on property and equipment disposed during the nine months ended July 31, 2012	$ 0	$ 0	$ 0	$ 982

The decrease in accumulated depreciation, depletion and amortization (relating to property, plant and equipment) as a result of sales or disposals of property, plant and equipment during the period.

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Name:	us-gaap_AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration