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Income Taxes - Additional Information (Detail) (USD $)
12 Months Ended
Oct. 31, 2012
Oct. 31, 2011
Oct. 31, 2010
Income Tax Contingency [Line Items]      
Income tax receivable $ 1,300,000 $ 200,000  
Operating Loss Carryforwards, Valuation Allowance 69,000,000    
Operating Loss Carryforwards, Expiration Dates Most of these losses begin to expire in 2025.    
Tax Credit Carryforward, Amount 600,000    
Tax Credit Carryforward, Description not expected to be utilized within the next twelve months.    
Unrecognized tax benefits, would not affect the annual effective tax rate 14,700,000    
Decrease in the UTB as a result of a lapse in the statute of limitations 3,571,000 0 0
Reduction of excess tax benefit liability related to Separation 2,851,000    
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense 300,000 300,000 200,000
Future Unrecongized Tax Benefit Reductions Resulting From Lapse of Applicable Statute of Limitations, Next Twelve Months 2,700,000    
State and Local Jurisdiction [Member]
     
Income Tax Contingency [Line Items]      
Operating Loss Carryforwards, Valuation Allowance 1,100,000    
State and Local Jurisdiction [Member] | Minimum
     
Income Tax Contingency [Line Items]      
Income Tax Examination, Period Subject To Examination 4 years    
State and Local Jurisdiction [Member] | Maximum
     
Income Tax Contingency [Line Items]      
Income Tax Examination, Period Subject To Examination 5 years    
Internal Revenue Service (IRS) [Member] | State Impact On Federal Modifications [Member]
     
Income Tax Contingency [Line Items]      
Income Tax Examination, Period Subject To Examination 1 year    
Lapse in Statute of Limitations [Member]
     
Income Tax Contingency [Line Items]      
Reduction of excess tax benefit liability related to Separation 2,900,000    
Income Tax Expense (Benefit) $ (700,000)