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Fair Value Measurements (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended
--- | ---
Oct. 31, 2020 | Oct. 31, 2019 | Oct. 31, 2018
Assets at Fair Value: |  |  |
Unrealized investment gain |  |  | $ 2,247
Limoneira |  |  |
Assets at Fair Value: |  |  |
Limoneira's stock price | $ 13.83 | $ 18.92 | $ 24.65
Limoneira |  |  |
Assets at Fair Value: |  |  |
Number of securities sold |  | 51,271 |
Loss on sale of investments |  | $ 100 |
Investment shares held (in shares) | 1,677,299 |  |
Unrealized gains (losses) recorded | $ (8,500) | (9,600) | $ 2,200
Unrealized investment gain |  |  | $ 1,700
Limoneira | Maximum |  |  |
Assets at Fair Value: |  |  |
Non-equity method investment ownership (as a percent) | 10.00% |  |
Fair Value, Measurements, Recurring |  |  |
Assets at Fair Value: |  |  |
Total assets at fair value | $ 23,197 | 31,734 |
Fair Value, Measurements, Recurring | Limoneira |  |  |
Assets at Fair Value: |  |  |
Investment in Limoneira Company | 23,197 | 31,734 |
Fair Value, Measurements, Recurring | Level 1 |  |  |
Assets at Fair Value: |  |  |
Total assets at fair value | 23,197 | 31,734 |
Fair Value, Measurements, Recurring | Level 1 | Limoneira |  |  |
Assets at Fair Value: |  |  |
Investment in Limoneira Company | $ 23,197 | $ 31,734 |

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