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Income Taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2013
Operating Loss Carryforwards [Line Items]      
Unrecognized Tax Benefits $ 15,700 $ 15,700  
Income (Loss) from Continuing Operations before Income Taxes, Domestic (26,459) (35,167) $ (31,044)
Income (Loss) from Continuing Operations before Income Taxes, Foreign (2,951) (3,228) (3,904)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Extraordinary Items, Noncontrolling Interest (29,410) (38,395) (34,948)
Current Foreign Tax Expense (Benefit) 300 500 400
franchise tax expense $ 200 $ 200 $ 200
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate (34.00%) (34.00%) (34.00%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes (0.10%) (1.80%) (1.70%)
Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential 0.90% 1.00% 0.90%
effective income tax rate reconciliation, net operating loss adjustment 4.70% (25.40%) 0.10%
Effective Income Tax Rate Reconciliation, Nondeductible Expense 0.10% 14.50% 0.80%
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate 1.60% (0.80%) 10.50%
Effective Income Tax Rate Reconciliation, Other Adjustments 0.40% 0.40% 4.10%
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance 27.30% 47.10% 20.30%
Effective Income Tax Rate, Continuing Operations 0.90% 1.00% 1.00%
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Benefits $ 8,389 $ 7,591  
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts 1,109 1,859  
Deferred Tax Assets, Capital Loss Carryforwards 12,998 13,486  
Deferred Tax Assets, Operating Loss Carryforwards 257,373 247,170  
deferred tax assets, deferred license revenue 9,313 8,894  
Deferred Tax Assets, Inventory 77 521  
Deferred Tax Assets, Investments 0 404  
Deferred Tax Assets, Property, Plant and Equipment 535 590  
Deferred Tax Assets, Gross 289,794 280,515  
Deferred Tax Assets, Valuation Allowance (289,794) (280,515)  
Deferred Tax Assets, Net of Valuation Allowance 0 0  
Deferred Tax Liabilities, Deferred Expense, Capitalized Research and Development Costs (3,377) (3,377)  
Deferred Tax Liabilities, Net (3,377) $ (3,377)  
Valuation Allowance Allocated To Reduce Additional Paid In Capital 4,600    
Federal Operating Loss Carryforwards 721,000    
State Operating Loss Carryforwards 406,000    
Tax Credits, State 11,000    
Amount of Tax Credits to Expire $ 1,000