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Income Taxes (Details 4) - USD ($) $ in Thousands | 12 Months Ended
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Oct. 31, 2017 | Oct. 31, 2016 | Oct. 31, 2015
Tax Benefits potential Interest and Penalties |  |  |
Tax Benefits potential Interest and Penalties | $ 1,513 | $ 3,426 | $ 4,454
Tax Benefit Amount Accrued for potential Interest and Penalties |  |  |
Tax Benefit Amount Accrued for potential Interest and Penalties | $ 5,179 | $ 9,282 |

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- Definition Amount accrued for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=84230637&loc=d3e32718-109319 + Details
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