Segment Information (Depreciation and Amortization) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Depreciation and amortization:
Depreciation and amortization	$ 54,007	$ 46,222	$ 39,864
Northeast [Member]
Depreciation and amortization:
Depreciation and amortization	2,133	1,682	1,852
Southeast [Member]
Depreciation and amortization:
Depreciation and amortization	5,350	3,492	2,666
Florida [Member]
Depreciation and amortization:
Depreciation and amortization	4,955	3,536	2,150
Texas [Member]
Depreciation and amortization:
Depreciation and amortization	3,673	2,928	1,698
Midwest [Member]
Depreciation and amortization:
Depreciation and amortization	5,099	5,019	3,153
West [Member]
Depreciation and amortization:
Depreciation and amortization	6,739	5,995	5,263
Other Homebuilding [Member]
Depreciation and amortization:
Depreciation and amortization	22,467	20,254	19,548
Homebuilding [Member]
Depreciation and amortization:
Depreciation and amortization	50,416	42,906	36,330
Financial Services [Member]
Depreciation and amortization:
Depreciation and amortization	$ 3,591	$ 3,316	$ 3,534