Annual report pursuant to section 13 and 15(d)

Shareholders' Equity (Detail) - Stock Option Activity

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Shareholders' Equity (Detail) - Stock Option Activity (USD $)
 12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2010
Share 2000 Plan [Member]
      
Options Outstanding, Shares   870,466  
Options Outstanding, Weighted Average Exercise Price Per Share (in Dollars per share)     $ 0.66
Expired, Share   (870,466)  
Expired, Weighted Average Exercise Price Per Share (in Dollars per share)   $ 0.66  
Options Outstanding and Exercisable, Share 0    
Options Outstanding and Exercisable, Weighted Average Exercise Price Per Share (in Dollars per share) $ 0    
Options Outstanding and Exercisable, Aggregate Intrinsic Value (in Dollars) $ 0    
Share 2003 Plan [Member]
      
Options Outstanding, Shares   18,112,045  
Options Outstanding, Weighted Average Exercise Price Per Share (in Dollars per share) $ 0.715   $ 0.80
Options Outstanding, Aggregate Intrinsic Value (in Dollars) 222,000    
Expired, Share   (60,000)  
Expired, Weighted Average Exercise Price Per Share (in Dollars per share)   $ 0.59  
Exercised, Shares   (500,000)  
Exercised, Weighted Average Exercise Price Per Share (in Dollars per share)   $ 0.25  
Options Outstanding and Exercisable, Share   17,552,045  
Options Outstanding and Exercisable, Weighted Average Exercise Price Per Share (in Dollars per share)   $ 0.81  
Granted, Shares 60,000    
Granted, Weighted Average Exercise Price Per Share (in Dollars per share) $ 0.072    
Forfeited (195,000)    
Cancelled (1,067,000)    
Cancelled (in Dollars per share) $ 0.86    
Options Outstanding, Shares 16,350,045    
Options Exercisable, Shares 16,290,045    
Options Exercisable, Weighted Average Exercise Price Per Share (in Dollars per share) $ 0.718    
Options Exercisable, Aggregate Intrinsic Value (in Dollars) 211,000    
Share 2010 Plan [Member]
      
Options Outstanding, Shares 1,050,000 1,035,000  
Options Outstanding, Weighted Average Exercise Price Per Share (in Dollars per share) $ 0.248 $ 0.31 $ 0.21
Options Outstanding, Aggregate Intrinsic Value (in Dollars) 109,730    
Exercised, Shares (1,290,000) (5,120,000)  
Exercised, Weighted Average Exercise Price Per Share (in Dollars per share) $ 0.16 $ 0.23  
Granted, Shares 3,060,000 5,135,000  
Granted, Weighted Average Exercise Price Per Share (in Dollars per share) $ 0.19 $ 0.25  
Options Outstanding, Shares 2,820,000 1,050,000  
Options Exercisable, Shares 1,928,750    
Options Exercisable, Weighted Average Exercise Price Per Share (in Dollars per share) $ 0.261    
Options Exercisable, Aggregate Intrinsic Value (in Dollars) $ 73,346