Land and Development (Acquisitions, Dispositions, and Redeemable Noncontrolling Interest) (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Feb. 29, 2016	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015	Apr. 30, 2015
Property, Plant and Equipment [Line Items]
Noncontrolling interest increase (percent)	7.20%
Noncontrolling interest, decrease from redemptions or purchase of interests	$ 7,200
Noncontrolling interest, ownership percentage by parent		92.20%		92.20%
Land development revenue		$ 31,554	$ 14,301	$ 74,389	$ 29,101
Land development cost of sales		22,004	10,686	50,842	22,828
Impairment of assets		8,741	$ 3,916	11,753	5,590
Redeemable noncontrolling interests		6,601		6,601		$ 10,718
Land & Development
Property, Plant and Equipment [Line Items]
Purchase price							$ 16,100
Deferred revenue							$ 5,300
Not Currently Redeemable
Property, Plant and Equipment [Line Items]
Redeemable noncontrolling interests		$ 3,400		3,400		$ 7,200
Real Estate Acquired in Satisfaction of Debt
Property, Plant and Equipment [Line Items]
Deed-in-lieu transfers				9,100	$ 13,400
Land & Development
Property, Plant and Equipment [Line Items]
Impairment of assets				$ 3,800