Income Taxes (Details Textual) (USD $)	3 Months Ended	12 Months Ended
Jan. 31, 2015	Jan. 31, 2014	Oct. 31, 2014
Income Taxes (Textual) [Abstract]
Income Tax Expense (Benefit)	$ 42,698,000us-gaap_IncomeTaxExpenseBenefit	$ 25,655,000us-gaap_IncomeTaxExpenseBenefit
Effective Income Tax Rate Reconciliation, Percent	34.40%	36.00%
Number of states	19
Unrecognized Tax Benefits	59,800,000us-gaap_UnrecognizedTaxBenefits
Significant (Increase) Decrease in Unrecognized Tax Benefits is Reasonably Possible, Estimated Range of Change, Upper Bound	31,100,000
State and Local Jurisdiction [Member]
Income Taxes (Textual) [Abstract]
Effective Income Tax Rate Reconciliation, Percent	6.80%		7.20%
Deferred Tax Assets, Valuation Allowance	$ 43,600,000		$ 43,800,000

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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The number of states the entity operates in as of the balance sheet date.

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Amount of (increase) decrease reasonably possible in the estimated upper bound of the unrecognized tax benefit for a tax position taken or expected to be taken.

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Amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns.

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