Reporting Segments and Related Information - Revenue Components of Farming Segments (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Revenue from External Customer [Line Items]
Commercial/industrial revenues	$ 13,469	$ 5,702
Income (loss)	1,814	(3,473)
Farming Segment
Revenue from External Customer [Line Items]
Commercial/industrial revenues	1,195	431
Income (loss)	(643)	(892)
Farming Segment \| Almonds
Revenue from External Customer [Line Items]
Commercial/industrial revenues	924	0
Farming Segment \| Pistachios
Revenue from External Customer [Line Items]
Commercial/industrial revenues	43	256
Farming Segment \| Wine grapes
Revenue from External Customer [Line Items]
Commercial/industrial revenues	0	0
Farming Segment \| Hay
Revenue from External Customer [Line Items]
Commercial/industrial revenues	87	(1)
Farming Segment \| Other
Revenue from External Customer [Line Items]
Commercial/industrial revenues	$ 141	$ 176

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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