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Fair Value Measurements - Financial Assets and Liabilities Measured on a Recurring Basis (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2014
Assets at Fair Value:
Unrealized Gain (Loss) on Investments	$ (6,621)	$ 16,940	$ 1,175
Limoneira
Assets at Fair Value:
Limoneira's stock price	$ 19.69	$ 15.86	$ 25.66
Unrealized Gain (Loss) on Investments	$ 4,100	$ 10,300	$ 700
Fair Value, Measurements, Recurring [Member]
Assets at Fair Value:
Total assets at fair value	34,036
Fair Value, Measurements, Recurring [Member] | Limoneira
Assets at Fair Value:
Total assets at fair value	$ 34,036
Percentage of outstanding shares of Limoneira's shares owned	12.00%
Limoneira's stock price	$ 19.69	$ 15.86
Unrealized Gain (Loss) on Investments	$ (6,600)	$ (16,900)	$ (1,200)
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Assets at Fair Value:
Total assets at fair value	34,036
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Limoneira
Assets at Fair Value:
Total assets at fair value	$ 34,036

X

- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258

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- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

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- Definition

Price of a single share of a number of saleable stocks of a company.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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