Supplemental Guarantor Information (Supplemental Condensed Consolidated Statement Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenues
Total revenues	$ 619,950	$ 531,892	$ 1,153,007	$ 933,740
Selling, general and administrative	(75,217)	(63,634)	(144,153)	(120,156)
Loss on debt extinguishment	(10,832)		(10,832)
Acquisition expense		(165)		(338)
Equity in income of unconsolidated subsidiaries		11,681		14,849
Other income (expense)	(519)	350	(443)	(8)
Income before income tax expense	20,830	46,502	43,827	69,609
Income tax expense	(5,335)	(13,309)	(11,215)	(16,397)
Net income	15,495	33,193	32,612	53,212
Century [Member]
Revenues
Selling, general and administrative	(18,813)	(18,154)	(37,467)	(33,616)
Loss on debt extinguishment	(10,832)		(10,832)
Acquisition expense		(165)		(338)
Equity in earnings from consolidated subsidiaries	38,508	34,555	69,671	65,837
Equity in income of unconsolidated subsidiaries		11,681		14,849
Other income (expense)	(869)	(22)	(768)	(255)
Income before income tax expense	7,994	27,895	20,604	46,477
Income tax expense	7,501	5,298	12,008	6,735
Net income	15,495	33,193	32,612	53,212
Guarantor Subsidiaries [Member]
Revenues
Total revenues	610,035	523,878	1,134,692	920,169
Selling, general and administrative	(56,404)	(45,480)	(106,686)	(86,540)
Other income (expense)	302	372	257	247
Income before income tax expense	49,128	50,533	89,087	85,179
Income tax expense	(12,281)	(17,687)	(22,271)	(22,146)
Net income	36,847	32,846	66,816	63,033
Non Guarantor Subsidiaries [Member]
Revenues
Total revenues	9,915	8,014	18,315	13,571
Other income (expense)	48		68
Income before income tax expense	2,216	2,629	3,807	3,790
Income tax expense	(555)	(920)	(952)	(986)
Net income	1,661	1,709	2,855	2,804
Elimination Entries [Member]
Revenues
Equity in earnings from consolidated subsidiaries	(38,508)	(34,555)	(69,671)	(65,837)
Income before income tax expense	(38,508)	(34,555)	(69,671)	(65,837)
Net income	(38,508)	(34,555)	(69,671)	(65,837)
Home Sales [Member]
Revenues
Total revenues	608,636	522,164	1,131,938	916,995
Cost of revenues	(503,928)	(427,197)	(937,685)	(746,780)
Home Sales [Member] | Guarantor Subsidiaries [Member]
Revenues
Total revenues	608,636	522,164	1,131,938	916,995
Cost of revenues	(503,928)	(427,197)	(937,685)	(746,780)
Land Sales And Other [Member]
Revenues
Total revenues	1,399	1,714	2,754	3,174
Cost of revenues	(877)	(1,040)	(1,491)	(1,917)
Land Sales And Other [Member] | Guarantor Subsidiaries [Member]
Revenues
Total revenues	1,399	1,714	2,754	3,174
Cost of revenues	(877)	(1,040)	(1,491)	(1,917)
Homebuilding [Member]
Revenues
Total revenues	610,035	523,878	1,134,692	920,169
Cost of revenues	(504,805)	(428,237)	(939,176)	(748,697)
Homebuilding [Member] | Guarantor Subsidiaries [Member]
Revenues
Total revenues	610,035	523,878	1,134,692	920,169
Cost of revenues	(504,805)	(428,237)	(939,176)	(748,697)
Financial Services [Member]
Revenues
Total revenues	9,915	8,014	18,315	13,571
Cost of revenues	(7,747)	(5,385)	(14,576)	(9,781)
Financial Services [Member] | Non Guarantor Subsidiaries [Member]
Revenues
Total revenues	9,915	8,014	18,315	13,571
Cost of revenues	$ (7,747)	$ (5,385)	$ (14,576)	$ (9,781)