Investments (Detail) (USD $)
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12 Months Ended | 12 Months Ended | 12 Months Ended | 2 Months Ended | 12 Months Ended | 0 Months Ended | 1 Months Ended | ||||||||||
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Oct. 31, 2012
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Oct. 31, 2011
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Aug. 31, 2009
First Half [Member]
ZQX Advisory LLC [Member]
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Aug. 31, 2009
Second Half [Member]
ZQX Advisory LLC [Member]
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Oct. 31, 2011
Investment in Videocon [Member]
Old Cost Basis [Member]
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Oct. 31, 2011
Investment in Videocon [Member]
New Cost Basis [Member]
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Oct. 31, 2011
Investment in Videocon [Member]
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Oct. 31, 2012
Investment in Videocon [Member]
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Oct. 31, 2012
Investment in DISC [Member]
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Oct. 31, 2011
Investment in DISC [Member]
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Sep. 30, 2009
Volga - Svet Ltd [Member]
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Oct. 31, 2012
Volga - Svet Ltd [Member]
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Oct. 31, 2011
Volga - Svet Ltd [Member]
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Aug. 31, 2009
ZQX Advisory LLC [Member]
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Aug. 31, 2009
ZQX Advisory LLC [Member]
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Oct. 31, 2012
Available-for-sale Securities [Member]
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Oct. 31, 2011
Available-for-sale Securities [Member]
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Short-term Investments | $ 500,000 | $ 2,249,159 | $ 500,000 | $ 2,249,000 | |||||||||||||
Available-for-sale Securities, Amortized Cost Basis | 16,200,000 | ||||||||||||||||
Cost Method Investments | 127,500 | 7,105,000 | 5,382,000 | ||||||||||||||
Cost-method Investments, Other than Temporary Impairment | (1,723,000) | ||||||||||||||||
Other than Temporary Impairment Losses, Investments | 127,500 | 10,818,000 | 63,000 | ||||||||||||||
Proceeds from Sale of Available-for-sale Securities | 1,000 | 119,000 | |||||||||||||||
Available-for-sale Securities Sold, Shares (in Shares) | 917,000 | 4,219,443 | |||||||||||||||
Gain (Loss) on Sale of Investments | 1,000 | 30,000 | |||||||||||||||
Business Acquisition, Percentage of Voting Interests Acquired | 19.90% | 19.50% | 19.50% | ||||||||||||||
Stock Issued During Period, Shares, Acquisitions (in Shares) | 150,000 | 800,000 | |||||||||||||||
Investment Owned, at Cost | 128,000 | ||||||||||||||||
Investment Write Off to Affiliates,at Carrying Value | 128,000 | ||||||||||||||||
Research and Development Expense | 2,211,506 | 3,124,773 | 326,000 | 518,000 | |||||||||||||
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares) | 500,000 | 500,000 | |||||||||||||||
Class of Warrant or Right, Exercise Price of Warrants or Rights (in Dollars per Item) | 0.37 | 0.555 | |||||||||||||||
Adjustments to Additional Paid in Capital, Other | $ 91,000 |