Income Taxes - Additional Information (Detail) (USD $)	12 Months Ended
Oct. 31, 2013	Oct. 31, 2012
Income Taxes [Line Items]
Unrecognized tax benefits, reduction resulting from lapse of applicable statute of limitations	$ 0	$ (79,000)
Unrecognized tax benefits, income tax penalties and interest accrued	$ 0	$ 0

Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return.

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

Name:	us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant