Business Segments Business Segments - Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Segment Reporting Information [Line Items]
Deposits on real estate under option or contract	$ 52,918	$ 45,357
Inventory	2,399,516	1,871,251
Investment in joint venture arrangements	57,121	34,673
Other Combined Assets	730,298	691,764
TOTAL ASSETS	3,239,853	2,643,045
Northern Homebuilding [Member]
Segment Reporting Information [Line Items]
Deposits on real estate under option or contract	4,123	5,031
Inventory	987,258	847,524
Investment in joint venture arrangements	0	1,378
Other Combined Assets	37,527	37,465
TOTAL ASSETS	1,028,908	891,398
Southern Homebuilding [Member]
Segment Reporting Information [Line Items]
Deposits on real estate under option or contract	48,795	40,326
Inventory	1,412,258	1,023,727
Investment in joint venture arrangements	57,121	33,295
Other Combined Assets	63,844	57,588
TOTAL ASSETS	1,582,018	1,154,936
Corporate, Financial Services and Unallocated [Member]
Segment Reporting Information [Line Items]
Deposits on real estate under option or contract	0	0
Inventory	0	0
Investment in joint venture arrangements	0	0
Other Combined Assets	628,927	596,711
TOTAL ASSETS	$ 628,927	$ 596,711