Real Estate and Tangible Water Assets, Net (Details) Components of Real Estate - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Real Estate [Abstract]
Real estate and improvements held and used, net of accumulated amortization of $12,003 at December 31, 2016 and $11,778 at December 31, 2015	$ 9,469	$ 9,694
Residential real estate and home construction inventories	373,724	362,056
Other real estate inventories completed or under development	5,207	9,971
Tangible water assets	42,498	42,514
Total real estate and tangible water assets, net	430,898	424,235
Accumulated amortization	$ 12,003	$ 11,778

Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Name:	us-gaap_RealEstateInvestmentPropertyAtCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant