Segment Reporting - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting, Revenue Reconciling Item
Revenues	$ 96,708	$ 78,091	$ 249,454	$ 158,523
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliates	(2,247)	1,099	(9,836)	(34,816)
Water resource and water storage operations
Segment Reporting, Revenue Reconciling Item
Revenues	553	3,468	813	4,191
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliates	(1,029)	834	(4,263)	(1,907)
Real estate operations
Segment Reporting, Revenue Reconciling Item
Revenues	95,567	73,777	246,731	172,243
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliates	2,876	3,839	4,713	(1,661)
Corporate
Segment Reporting, Revenue Reconciling Item
Revenues	588	846	1,910	(17,911)
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliates	$ (4,094)	$ (3,574)	$ (10,286)	$ (31,248)

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.

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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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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