Estimated Development Liability (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014 homesite	Dec. 31, 2014
Estimated Development Liability for Sold Land [Abstract]
Number of estimated homes the estimated liability covers (homesites)		8,000
Charges related to estimated liability for sold land	$ 100,000	$ 0
Estimated development liability	$ 32,960,000		$ 33,003,000