Segment Information (Land-Related Charges by Segment) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Restructuring Cost and Reserve [Line Items]
Land-related charges	$ 2,453	$ 3,831	$ 12,181	$ 6,810
Northeast
Restructuring Cost and Reserve [Line Items]
Land-related charges	92	130	4,845	454
Southeast
Restructuring Cost and Reserve [Line Items]
Land-related charges	929	2,015	1,676	2,587
Florida
Restructuring Cost and Reserve [Line Items]
Land-related charges	459	765	981	1,246
Midwest
Restructuring Cost and Reserve [Line Items]
Land-related charges	499	203	1,275	1,306
Texas
Restructuring Cost and Reserve [Line Items]
Land-related charges	329	414	986	482
West
Restructuring Cost and Reserve [Line Items]
Land-related charges	145	216	1,674	647
Other homebuilding
Restructuring Cost and Reserve [Line Items]
Land-related charges	$ 0	$ 88	$ 744	$ 88