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Fair Value Measurements (Detail) - The hierarchy for our financial assets measured at fair value on a recuring basis (USD $)
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Jul. 31, 2012
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Oct. 31, 2011
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|---|---|---|
| Videocon Industries Limited global depository receipts | $ 4,602,716 | $ 5,382,051 |
| Total financial assets | 5,654,248 | 8,236,889 |
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Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]
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| Cash and cash equivalents | 101,532 | 5,685 |
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Fair Value, Inputs, Level 1 [Member] | Certificates of Deposit [Member]
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| Short-term investments | ||
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Fair Value, Inputs, Level 1 [Member] | US Government Corporations and Agencies Securities [Member]
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| Cash and cash equivalents | ||
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Fair Value, Inputs, Level 1 [Member] | U.S. Government Securities and Certificates of Deposit [Member]
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| Short-term investments | ||
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Fair Value, Inputs, Level 1 [Member]
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| Videocon Industries Limited global depository receipts | 4,602,716 | 5,382,051 |
| Total financial assets | 4,704,248 | 5,387,736 |
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Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
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| Cash and cash equivalents | ||
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Fair Value, Inputs, Level 2 [Member] | Certificates of Deposit [Member]
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| Short-term investments | 950,000 | |
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Fair Value, Inputs, Level 2 [Member] | US Government Corporations and Agencies Securities [Member]
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| Cash and cash equivalents | 599,994 | |
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Fair Value, Inputs, Level 2 [Member] | U.S. Government Securities and Certificates of Deposit [Member]
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| Short-term investments | 2,249,159 | |
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Fair Value, Inputs, Level 2 [Member]
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| Videocon Industries Limited global depository receipts | ||
| Total financial assets | 950,000 | 2,849,153 |
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Fair Value, Inputs, Level 3 [Member] | Money Market Funds [Member]
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| Cash and cash equivalents | ||
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Fair Value, Inputs, Level 3 [Member] | Certificates of Deposit [Member]
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| Short-term investments | ||
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Fair Value, Inputs, Level 3 [Member] | US Government Corporations and Agencies Securities [Member]
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| Cash and cash equivalents | ||
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Fair Value, Inputs, Level 3 [Member] | U.S. Government Securities and Certificates of Deposit [Member]
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| Short-term investments | ||
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Fair Value, Inputs, Level 3 [Member]
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| Videocon Industries Limited global depository receipts | ||
| Total financial assets | ||
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Money Market Funds [Member]
|
||
| Cash and cash equivalents | 101,532 | 5,685 |
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Certificates of Deposit [Member]
|
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| Short-term investments | 950,000 | |
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US Government Corporations and Agencies Securities [Member]
|
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| Cash and cash equivalents | 599,994 | |
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U.S. Government Securities and Certificates of Deposit [Member]
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| Short-term investments | $ 2,249,159 |