Segment Reporting - Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Segment Reporting, Revenue Reconciling Item
Revenues	$ 69,037	$ 45,324
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliates	(4,795)	(9,083)
Water resource and water storage operations
Segment Reporting, Revenue Reconciling Item
Revenues	161	210
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliates	(1,693)	(1,492)
Real estate operations
Segment Reporting, Revenue Reconciling Item
Revenues	68,272	43,680
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliates	(75)	(3,779)
Corporate
Segment Reporting, Revenue Reconciling Item
Revenues	604	1,434
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliates	$ (3,027)	$ (3,812)

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

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=26872669&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 03
-Paragraph 1
-Article 5

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