Estimated Development Liability (Details) homesite in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015 USD ($) homesite	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) homesite	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Estimated Development Liability for Sold Land [Abstract]
Number of estimated homes the estimated liability covers (homesites) | homesite	8		8
Charges related to estimated liability for sold land	$ 100	$ 200	$ 200	$ 200
Estimated development liability	$ 32,738		$ 32,738		$ 33,003