Estimated Development Liability (Details) home in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2016 USD ($) home	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) home	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Cash expenditures for obligations related to prior sales	$ 200	$ 100	$ 300	$ 200
Estimated development liability	$ 32,257		$ 32,257		$ 32,551
Minimum
Number of estimated homes the estimated liability covers (homesites) \| home	8		8

Carrying amount as of the balance sheet date of the liability for the obligation to provide retail land sale buyers with improvements.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 976
-SubTopic 330
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6497913&loc=d3e22628-108666

Name:	us-gaap_RetailLandSalesLiabilityForImprovements
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant