Segment Information (Depreciation and Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Depreciation and amortization:
Depreciation and amortization	$ 66,081	$ 53,999	$ 49,429
Northeast [Member]
Depreciation and amortization:
Depreciation and amortization	2,454	1,962	2,093
Southeast [Member]
Depreciation and amortization:
Depreciation and amortization	4,308	4,448	5,231
Florida [Member]
Depreciation and amortization:
Depreciation and amortization	7,478	5,775	4,893
Texas [Member]
Depreciation and amortization:
Depreciation and amortization	3,631	3,423	3,082
Midwest [Member]
Depreciation and amortization:
Depreciation and amortization	5,329	4,417	4,271
West [Member]
Depreciation and amortization:
Depreciation and amortization	11,450	9,317	6,758
Other Homebuilding [Member]
Depreciation and amortization:
Depreciation and amortization	26,459	19,553	18,908
Home Building [Member]
Depreciation and amortization:
Depreciation and amortization	61,109	48,895	45,236
Financial Services [Member]
Depreciation and amortization:
Depreciation and amortization	$ 4,972	$ 5,104	$ 4,193