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Basis of Presentation and Significant Accounting Policies - Comprehensive Income (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 31, 2019	Oct. 31, 2018	Oct. 31, 2017
Significant Accounting Policies [Line Items]
Unrealized Gain (Loss) on Investments		$ 2,247	$ 6,326
Unrealized and realized net loss on Limoneira shares	$ (9,722)
Limoneira [Member]
Significant Accounting Policies [Line Items]
Share Price	$ 18.92	$ 24.65	$ 23.35
Limoneira [Member]
Significant Accounting Policies [Line Items]
Unrealized Gain (Loss) on Investments		$ 1,700	$ 3,900
Investment shares held (in shares)	1,677,299
Unrealized and realized net loss on Limoneira shares	$ (9,600)

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Significant Accounting Policies [Line Items]

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Amount of unrealized and realized 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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Balance held at close of period in number of shares.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of investments, not including unrealized gains or losses on securities separately or otherwise categorized as trading, available-for-sale, or held-to-maturity, held at each balance sheet date and included in earnings for the period.

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