Annual report pursuant to section 13 and 15(d)

Investments (Detail) - Fair value of investment

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Investments (Detail) - Fair value of investment (USD $)
12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Fair Value $ 4,728,367 $ 5,382,051
Investment in Videocon [Member]
   
Fair Value 5,382,051 8,524,821
Unrealized loss (653,684)  
Reversal of unrealized gain   (1,419,557)
Other than temporary impairment   (1,723,213)
Fair Value 4,728,367 5,382,051
Fair Value and Cost Basis as of October 31, 2010 16,200,000  
Investment in DISC [Member]
   
Fair Value and Cost Basis as of October 31, 2010   143,989
DISC common stock sold in fiscal 2011   (88,608)
Reversal of unrealized gain   7,199
Other than temporary impairment   (62,580)
Fair Value $ 0