Reporting Segments (Schedule Of Total Revenue And Pretax Income By Segment) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Segment Reporting Information [Line Items]
Total revenue									$ 2,535,911	$ 2,147,413	$ 1,423,799
Total income (loss) before income tax expense	$ 53,968	$ 34,840	$ 20,830	$ 22,997	$ 36,062	$ 22,859	$ 46,502	$ 23,107	132,635	128,530	84,164
West [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue									534,613	459,254	210,696
Total income (loss) before income tax expense									43,027	38,380	14,640
Mountain [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue									729,045	701,985	616,517
Total income (loss) before income tax expense									89,201	89,048	75,704
Texas [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue									252,921	213,508	165,170
Total income (loss) before income tax expense									25,866	13,682	10,952
Southeast [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue									548,661	530,891	421,563
Total income (loss) before income tax expense									31,435	33,267	29,662
Wade Jurney Homes [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue									427,409	210,051
Total income (loss) before income tax expense									22,044	(754)
Financial Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue									43,262	31,724	9,853
Total income (loss) before income tax expense									10,687	8,766	1,225
Corporate [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue
Total income (loss) before income tax expense									$ (89,625)	$ (53,859)	$ (48,019)