Summary of Significant Accounting Policies Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Homebuilding operations percent of total revenue	97.00%	97.00%	98.00%
Revenue	$ 3,745,887	$ 3,046,145	$ 2,500,290
Gain (Loss) on Hedging Activity	1,600	(19,000)	(12,100)
Financial Service
Disaggregation of Revenue [Line Items]
Revenue	102,028	87,013	55,323
Construction [Member]
Disaggregation of Revenue [Line Items]
Revenue	3,630,469	2,939,962	2,420,348
Land [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 13,390	$ 19,170	$ 24,619