Estimated Development Liability for Sold Land (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 homesite	Dec. 31, 2012	Dec. 31, 2011
Estimated Development Liability for Sold Land [Abstract]
Number of estimated homes the estimated liability covers (homesites)	8,000
Gross estimated unexpended costs	$ 36,117	$ 35,879
Less costs relating to unsold home sites	(2,885)	(2,905)
Estimated development liability for sold land	33,232	32,974
Charges related to estimated liability for sold land	317	88	(794)
Cash expenditures for improvements	$ 59	$ 88	$ 299