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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Oct. 31, 2017
Oct. 31, 2016
Income Tax Disclosure [Abstract]    
Deferred tax assets, Compensation and benefit accruals $ 11,158 $ 9,625
Deferred tax assets, Bad debt and other allowances 605 1,276
Deferres tax assets, Capital loss and tax credit carry-forwards 13,398 12,772
Deferred tax assets, Net operating losses (domestic and foreign) 282,022 265,799
Deferred tax assets, Deferred license revenue 7,850 8,616
Deferred tax assets, Inventory valuation allowances 111 278
Deferred tax assets, Accumulated depreciation 5,095 4,653
Deferred tax assets, Grant revenue 1,522 1,327
Deferred tax assets, Gross 321,761 304,346
Deferred tax assets, Valuation allowance (321,761) (304,346)
Deferred tax assets after valuation allowance 0 0
Deferred tax liability, In process research and development (3,377) (3,377)
Deferred Tax Liability, Net $ (3,377) $ (3,377)