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Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Oct. 31, 2017 | Oct. 31, 2016
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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)

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