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Fair Value Disclosures (Level 4 marketable securities) (Details 2) (USD $) In Thousands, unless otherwise specified | Jan. 31, 2014 | Oct. 31, 2013
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Fair Value Disclosures (Textual) [Abstract] |  |
Marketable Securities Maturities Term Minimum | 3 months |
Marketable Securities Maturities Term Maximum | 22 months |
Summary of amortized cost gross unrealized holding gains and losses |  |
Amortized cost | $ 13,061 | $ 52,502
Available For Sale Securities Gross Unrealized Gain Accumulated Investments | 3 | 71
Available For Sale Securities Gross Unrealized Loss Accumulated Investments | (47) | (65)
Fair value | $ 13,017 | $ 52,508

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- Definition Amount of accumulated unrealized gain before deducting unrealized loss on investments in available-for-sale securities impacting investments. + References No definition available. + Details
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- Definition Amount of accumulated unrealized loss before deducting unrealized gain on investments in available-for-sale securities impacting investments. + References No definition available. + Details
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- Definition The maximum maturity period (in months) for the Company's marketable securities. + References No definition available. + Details
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- Definition The minimum maturity period (in months) for the Company's marketable securities. + References No definition available. + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of debt securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28360136&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26610-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -Subparagraph (b)-(g) -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 + Details
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