Principles of Consolidation and Summary of Significant Accounting Policies concentration of credit risks (Details) - customers |
3 Months Ended | ||
|---|---|---|---|
Jan. 31, 2017 |
Jan. 31, 2016 |
Oct. 31, 2015 |
|
| Entity Wide Revenue, Major Customer, Count | 0 | 0 | |
| Credit Concentration Risk [Member] | |||
| Concentration Risk, Major Customer, Count | 0 | 0 | |