Annual report pursuant to section 13 and 15(d)

Income Taxes (Detail) - Reconciliation of income taxes at the Federal statutory tax rate

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Income Taxes (Detail) - Reconciliation of income taxes at the Federal statutory tax rate (USD $)
12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Income tax benefit at U.S. Federal statutory income tax rate (in Dollars) $ (1,446,000) $ (2,305,000)
Income tax benefit at U.S. Federal statutory income tax rate (34.00%) 34.00%
State income taxes (in Dollars) (2,000) (4,000)
State income taxes (0.06%) (0.06%)
Permanent differences (in Dollars) 8,000 10,000
Permanent differences 0.19% 0.15%
Credits (in Dollars) (63,000) (89,000)
Credits (1.48%) (1.31%)
Expiring net operating losses, credits and other (in Dollars) 2,527,000 7,444,000
Expiring net operating losses, credits and other 59.44% 109.83%
Foreign rate difference on impairment (in Dollars)    587,000
Foreign rate difference on impairment    8.65%
Foreign withholding tax (in Dollars)    600,000
Foreign withholding tax    8.85%
Change in valuation allowance (in Dollars) (1,024,000) (5,643,000)
Change in valuation allowance (24.09%) (83.26%)
Income tax provision (in Dollars)    $ 600,000
Income tax provision 0.00% 8.85%