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Stock-Based Benefit Plans (Details Textual) (USD $)
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3 Months Ended |
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3 Months Ended |
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Jan. 31, 2014
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Oct. 31, 2013
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Jan. 31, 2014
Performance Based Restricted Stock Units [Member]
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Jan. 31, 2013
Performance Based Restricted Stock Units [Member]
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Jan. 31, 2014
Stock Price Based Restricted Stock Units [Member]
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Jan. 31, 2013
Stock Price Based Restricted Stock Units [Member]
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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| Gross shares distributed related to restricted stock |
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306,000 |
200,000 |
| Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period |
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4 years |
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| Stock Based Benefit Plans (Textual) [Abstract] |
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| Minimum percentage of units issued to the recipients of the base award |
90.00% |
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| Maximum percentage of units issued to the recipients of the base award |
110.00% |
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| Stock Based Benefit Plans (Additional Textual) [Abstract] |
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| Aggregate unamortized value of outstanding stock based compensation awards |
$ 37,800,000 |
$ 19,900,000 |
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| Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures |
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$ 10,150,000 |
$ 11,429,000 |
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