Income Taxes - Effective Income Tax Rate (Details) |
12 Months Ended | ||
|---|---|---|---|
Oct. 31, 2015 |
Oct. 31, 2014 |
Oct. 31, 2013 |
|
| Income tax rate reconciliation: | |||
| Provision at statutory rate | 35.00% | 35.00% | 35.00% |
| State taxes | 6.04% | (6.87%) | (1.13%) |
| Foreign taxes | 28.98% | (70.25%) | (12.70%) |
| Research and development credit | (25.55%) | 32.07% | 17.39% |
| Non-deductible loss on debt extinguishment | 0.00% | 0.00% | (11.21%) |
| Non-deductible compensation and other | 30.16% | (29.59%) | (8.78%) |
| Valuation allowance | (23.73%) | (12.71%) | (25.10%) |
| Effective income tax rate | 50.90% | (52.35%) | (6.53%) |