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Income Taxes (Details Textual) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 31, 2013 | Jan. 31, 2012 | Oct. 31, 2012
Income Taxes (Textual) [Abstract] |  |  |
State taxes net of federal benefit, percentage | 6.40% | 6.50% |
Income Tax Reconciliation Decrease in Deferred Tax Assets Valuation Allowance | $ 216,000 | $ 2,843,000 | $ 394,718,000
Recognized cumulative valuation allowances against state deferred tax assets | $ 56,800,000 |  | $ 57,000,000
Number of states | 19 |  |

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- Definition Cumulative valuation allowance - state. + References No definition available. + Details
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- Definition Estimated state income tax rate. + References No definition available. + Details
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- Details
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- Definition Income tax reconciliation change in deferred tax assets valuation allowance reversed. + References No definition available. + Details
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- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
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