Supplemental Guarantor Information (Supplemental Condensed Consolidated Statement Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues
Home sales revenues	$ 287,588	$ 257,179	$ 514,008	$ 438,260
Land sales and other revenues	2,493	2,463	4,389	5,478
Homebuilding revenues	290,081	259,642	518,397	443,738
Financial services revenue	1,743		1,743
Total revenues	291,824	259,642	520,140	443,738
Cost of home sales revenues	(233,888)	(207,883)	(416,212)	(352,236)
Costs of land sales and other revenues	(1,746)	(1,471)	(2,890)	(4,013)
Homebuilding cost of revenues	(235,634)	(209,354)	(419,102)	(356,249)
Financial services costs	(1,445)		(2,199)
Selling, general, and administrative	(34,220)	(31,383)	(67,432)	(56,568)
Acquisition expense	(916)	(244)	(1,439)	(413)
Equity in income of unconsolidated subsidiaries	2,676		3,931
Other income (expense)	824	436	1,261	1,018
Income before income tax expense	23,109	19,097	35,160	31,526
Income tax expense	(8,278)	(5,955)	(11,530)	(10,401)
Net income	14,831	13,142	23,630	21,125
CCS [Member]
Revenues
Selling, general, and administrative	(7,587)	(6,085)	(17,535)	(11,478)
Acquisition expense	(916)	(244)	(1,439)	(413)
Equity in earnings from consolidated subsidiaries	18,687	16,522	32,400	28,212
Equity in income of unconsolidated subsidiaries	2,676		3,931
Other income (expense)	316	8	357	14
Income before income tax expense	13,176	10,201	17,714	16,335
Income tax expense	1,655	2,941	5,916	4,790
Net income	14,831	13,142	23,630	21,125
Guarantor Subsidiaries [Member]
Revenues
Home sales revenues	287,588	257,179	514,008	438,260
Land sales and other revenues	2,493	2,463	4,389	5,478
Homebuilding revenues	290,081	259,642	518,397	443,738
Total revenues	290,081	259,642	518,397	443,738
Cost of home sales revenues	(233,888)	(207,883)	(416,212)	(352,236)
Costs of land sales and other revenues	(1,746)	(1,471)	(2,890)	(4,013)
Homebuilding cost of revenues	(235,634)	(209,354)	(419,102)	(356,249)
Selling, general, and administrative	(26,633)	(25,298)	(49,897)	(45,090)
Other income (expense)	508	428	868	1,004
Income before income tax expense	28,322	25,418	50,266	43,403
Income tax expense	(9,913)	(8,896)	(17,593)	(15,191)
Net income	18,409	16,522	32,673	28,212
Non Guarantor Subsidiaries [Member]
Revenues
Financial services revenue	1,502		1,743
Total revenues	1,502		1,743
Financial services costs	(1,445)		(2,199)
Other income (expense)			36
Income before income tax expense	57		(420)
Income tax expense	(20)		147
Net income	37		(273)
Elimination Entries [Member]
Revenues
Financial services revenue	241
Total revenues	241
Equity in earnings from consolidated subsidiaries	(18,687)	(16,522)	(32,400)	(28,212)
Income before income tax expense	(18,446)	(16,522)	(32,400)	(28,212)
Net income	$ (18,446)	$ (16,522)	$ (32,400)	$ (28,212)