Supplemental Guarantor Information (Supplemental Condensed Consolidated Statement Of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues
Total revenues	$ 590,362	$ 561,729	$ 1,743,369	$ 1,495,467
Selling, general and administrative	(72,834)	(70,975)	(216,987)	(191,130)
Loss on debt extinguishment			(10,832)
Acquisition expense		(58)		(395)
Equity in income of unconsolidated subsidiaries				14,849
Other income (expense)	(56)	(545)	(499)	(553)
Income before income tax expense	34,840	22,858	78,667	92,468
Income tax expense	(7,816)	(5,810)	(19,031)	(22,207)
Net income	27,024	17,048	59,636	70,261
Century [Member]
Revenues
Selling, general and administrative	(17,621)	(20,187)	(55,089)	(53,802)
Loss on debt extinguishment			(10,832)
Acquisition expense		(58)		(395)
Equity in earnings from consolidated subsidiaries	39,268	32,282	108,939	97,688
Equity in income of unconsolidated subsidiaries				14,849
Other income (expense)	104	61	(664)	(194)
Income before income tax expense	21,751	12,098	42,354	58,146
Income tax expense	5,273	4,950	17,282	12,115
Net income	27,024	17,048	59,636	70,261
Guarantor Subsidiaries [Member]
Revenues
Total revenues	579,943	554,007	1,714,635	1,474,175
Selling, general and administrative	(55,213)	(50,788)	(161,898)	(137,328)
Other income (expense)	(119)	(606)	57	(359)
Income before income tax expense	50,153	41,376	139,160	126,554
Income tax expense	(12,539)	(10,344)	(34,790)	(32,904)
Net income	37,614	31,032	104,370	93,650
Non Guarantor Subsidiaries [Member]
Revenues
Total revenues	10,419	7,722	28,734	21,292
Other income (expense)	(41)		108
Income before income tax expense	2,204	1,666	6,092	5,456
Income tax expense	(550)	(416)	(1,523)	(1,418)
Net income	1,654	1,250	4,569	4,038
Elimination Entries [Member]
Revenues
Equity in earnings from consolidated subsidiaries	(39,268)	(32,282)	(108,939)	(97,688)
Income before income tax expense	(39,268)	(32,282)	(108,939)	(97,688)
Net income	(39,268)	(32,282)	(108,939)	(97,688)
Home Sales [Member]
Revenues
Total revenues	573,860	552,876	1,705,798	1,469,871
Cost of revenues	(469,834)	(460,144)	(1,407,519)	(1,206,924)
Home Sales [Member] | Guarantor Subsidiaries [Member]
Revenues
Total revenues	573,860	552,876	1,705,798	1,469,871
Cost of revenues	(469,834)	(460,144)	(1,407,519)	(1,206,924)
Land Sales And Other [Member]
Revenues
Total revenues	6,083	1,131	8,837	4,304
Cost of revenues	(4,624)	(1,093)	(6,115)	(3,010)
Land Sales And Other [Member] | Guarantor Subsidiaries [Member]
Revenues
Total revenues	6,083	1,131	8,837	4,304
Cost of revenues	(4,624)	(1,093)	(6,115)	(3,010)
Homebuilding [Member]
Revenues
Total revenues	579,943	554,007	1,714,635	1,474,175
Cost of revenues	(474,458)	(461,237)	(1,413,634)	(1,209,934)
Homebuilding [Member] | Guarantor Subsidiaries [Member]
Revenues
Total revenues	579,943	554,007	1,714,635	1,474,175
Cost of revenues	(474,458)	(461,237)	(1,413,634)	(1,209,934)
Financial Services [Member]
Revenues
Total revenues	10,419	7,722	28,734	21,292
Cost of revenues	(8,174)	(6,056)	(22,750)	(15,836)
Financial Services [Member] | Non Guarantor Subsidiaries [Member]
Revenues
Total revenues	10,419	7,722	28,734	21,292
Cost of revenues	$ (8,174)	$ (6,056)	$ (22,750)	$ (15,836)