Segment Reporting - Total Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Total Assets	$ 5,331,813	$ 4,963,528
Homebuilding:
Segment Reporting Information [Line Items]
Total Assets	4,944,861	4,543,134
Financial Services:
Segment Reporting Information [Line Items]
Total Assets	386,952	420,394
Operating Segments | Homebuilding: | West
Segment Reporting Information [Line Items]
Total Assets	2,595,147	2,472,378
Operating Segments | Homebuilding: | Mountain
Segment Reporting Information [Line Items]
Total Assets	1,164,506	1,072,717
Operating Segments | Homebuilding: | East
Segment Reporting Information [Line Items]
Total Assets	494,078	450,675
Operating Segments | Financial Services: | Mortgage operations
Segment Reporting Information [Line Items]
Total Assets	255,469	313,373
Operating Segments | Financial Services: | Other
Segment Reporting Information [Line Items]
Total Assets	131,483	107,021
Corporate | Homebuilding:
Segment Reporting Information [Line Items]
Total Assets	$ 691,130	$ 547,364