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Related party transactions - Additional Information (Detail) (USD $) | 12 Months Ended
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Oct. 31, 2013 | Oct. 31, 2012
Related Party Transaction [Line Items] |  |
Note receivable from stockholder | $ 67,000 | $ 67,000
Chief Executive Officer |  |
Related Party Transaction [Line Items] |  |
Note receivable from stockholder | 67,000 |
Debt Instrument, Interest Rate During Period | 6.00% |
Former Director |  |
Related Party Transaction [Line Items] |  |
Cost of services, Total | $ 6,000 | $ 43,000

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