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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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Amount of unrealized gain (loss) on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

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