Fair Value Measurements of Other Financial Instruments (Details) - USD ($) $ in Thousands |
Oct. 31, 2016 |
Oct. 31, 2015 |
|---|---|---|
| Carrying And Fair Value [Line Items] | ||
| Carrying value of loan to affiliate | $ 5,000 | $ 0 |
| Carrying value of other investments | 19,034 | 2,048 |
| Carrying value of other assets related to Hexavest option | 6,194 | 6,345 |
| Carrying value of debt | 573,967 | 573,811 |
| Level 2 [Member] | ||
| Carrying And Fair Value [Line Items] | ||
| Fair value of debt | 603,625 | 600,930 |
| Level 3 [Member] | ||
| Carrying And Fair Value [Line Items] | ||
| Fair value of loan to affiliate | 5,000 | 0 |
| Fair value of other investments | 19,034 | 2,048 |
| Fair value of other assets related to Hexavest option | $ 4,328 | $ 6,345 |