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Commitments - Additional Information (Detail) (USD $)
12 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Commitments And Contingencies [Line Items]    
Operating Leases, Rent Expense, Net, Total $ 576,000us-gaap_OperatingLeasesRentExpenseNet $ 652,000us-gaap_OperatingLeasesRentExpenseNet
Accrued Liabilities and Other Liabilities $ 6,000us-gaap_AccruedLiabilitiesAndOtherLiabilities $ 15,000us-gaap_AccruedLiabilitiesAndOtherLiabilities