Guarantees and Indemnifications Warranty Rollforward (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Warranty Accrual Rollforward [Abstract]
Warranty reserves, beginning of period	$ 11,220	$ 10,388	$ 12,291	$ 10,438
Warranty expense on homes delivered during the period	1,923	1,999	4,962	5,004
Changes in estimates for pre-existing warranties	1,047	321	1,937	422
Settlements made during the period	(3,508)	(1,952)	(8,508)	(5,108)
Warranty reserves, end of period	$ 10,682	$ 10,756	$ 10,682	$ 10,756