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Fair Value Measures - Additional Information (Detail) (USD $)
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12 Months Ended | ||
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Oct. 31, 2012
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Oct. 31, 2011
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Oct. 31, 2010
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| Fair Value Measures [Line Items] | |||
| Reduction in research and development expenses | $ 3,600,000 | ||
| Contingent consideration | 800,000 | ||
| Other-than-temporary impairment | 500,000 | 1,000,000 | 500,000 |
| Cost of equity investments sold | 2,400,000 | ||
| Sale of equity investments | 3,200,000 | ||
| Gain on sale of equity investments | 800,000 | ||
| Potential earn out receivable | 1,500,000 | ||
| Non-marketable equity securities | 11,700,000 | ||
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Cost-method Investments
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| Fair Value Measures [Line Items] | |||
| Non-marketable equity securities | 7,000,000 | 4,000,000 | |
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Equity Method Investments
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| Fair Value Measures [Line Items] | |||
| Non-marketable equity securities | $ 4,700,000 | ||
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- Details
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- Definition
Potential earn out receivable, Excluded In sale No definition available.
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- Definition
Amount of potential cash payments that could result from the contingent consideration arrangement. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the amount of any change, including any differences arising upon settlement, recognized during the reporting period in the value of a liability, arising from an item of contingent consideration, assumed in a business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the cost method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This element represents the aggregate cost of investments accounted for under the equity method of accounting. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
This item represents the amount of gain (loss) arising from the disposal of an equity method investment. No definition available.
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- Definition
This item represents the carrying amount of the entity's equity method investment which has been sold. This item is used only for purposes of disclosing the calculated gain (loss) on disposal of the subject equity method investment and not for reporting the carrying value of equity method investments as presented on the entity's balance sheet. For reporting the carrying value of equity method investments presented on the entity's balance sheet, the EquityMethodInvestments (Equity Method Investments) element would be used. No definition available.
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- Definition
Aggregate carrying value of owned private equity or other securities for which a quoted market price is not readily determinable, the value of which has been determined by management based upon fair value methods, including pricing of similar securities and valuation techniques and is included in the schedule of financial condition or the balance sheet. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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