Estimated Development Liability for Sold Land (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 homesite	Mar. 31, 2013	Dec. 31, 2013
Estimated Development Liability for Sold Land [Abstract]
Number of estimated homes the estimated liability covers (homesites)	8,000
Gross estimated unexpended costs	$ 36,109		$ 36,117
Less costs relating to unsold home sites	(2,885)		(2,885)
Estimated development liability for sold land	33,224		33,232
Charges related to estimated liability for sold land	0	19
Cash expenditures for improvements	$ 8	$ 20