Balance Sheet and Statement of Operations Components Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands |
Jan. 31, 2017 |
Oct. 31, 2016 |
Jan. 31, 2016 |
Oct. 31, 2015 |
|---|---|---|---|---|
| Cash and Cash Equivalents [Abstract] | ||||
| Restricted Cash and Cash Equivalents, Current | $ 9,360 | $ 9,008 | ||
| Restricted Cash and Cash Equivalents, Noncurrent | 1,696 | 1,821 | ||
| cash, cash equivalents and restricted cash | 158,051 | 159,181 | $ 205,850 | $ 215,869 |
| Cash and cash equivalents | $ 146,995 | $ 148,352 |