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Segment Information - Summary of Financial Information Relating to Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Jan. 01, 2018
Segment Reporting Information [Line Items]
Total revenues	$ 1,132,697	$ 775,071	$ 771,303	$ 583,676	$ 1,128,520	$ 717,735	$ 570,626	$ 393,391	$ 3,262,747	$ 2,810,272	$ 2,405,142
Income before income taxes									362,065	339,818	302,227
Financial Services Income Loss From Continuing Operations Before Taxes									9,673	7,466	5,777
Real estate inventories	3,216,059				3,105,553				3,216,059	3,105,553		$ 3,056,236
Total assets	3,884,203				3,805,381				3,884,203	3,805,381
All HomeBuilding Segments [Member]
Segment Reporting Information [Line Items]
Income before income taxes									352,392	332,352	296,450
Real estate inventories	3,216,059				3,105,553				3,216,059	3,105,553
Total assets	3,864,318				3,792,541				3,864,318	3,792,541
Operating segments [Member] | Maracay Homes [Member]
Segment Reporting Information [Line Items]
Income before income taxes									23,281	23,987	17,189
Real estate inventories	293,217				243,883				293,217	243,883
Total assets	318,703				268,866				318,703	268,866
Operating segments [Member] | Pardee Homes [Member]
Segment Reporting Information [Line Items]
Income before income taxes									191,793	198,738	204,237
Real estate inventories	1,286,877				1,245,659				1,286,877	1,245,659
Total assets	1,391,503				1,346,296				1,391,503	1,346,296
Operating segments [Member] | Quadrant Homes [Member]
Segment Reporting Information [Line Items]
Income before income taxes									38,366	32,671	21,209
Real estate inventories	279,486				257,887				279,486	257,887
Total assets	313,947				312,803				313,947	312,803
Operating segments [Member] | Trendmaker Homes [Member]
Segment Reporting Information [Line Items]
Income before income taxes									25,228	16,764	15,353
Real estate inventories	271,061				204,926				271,061	204,926
Total assets	325,943				224,995				325,943	224,995
Operating segments [Member] | Tri Pointe [Member]
Segment Reporting Information [Line Items]
Income before income taxes									115,632	89,811	62,013
Real estate inventories	812,799				855,727				812,799	855,727
Total assets	987,610				1,062,920				987,610	1,062,920
Operating segments [Member] | Winchester Homes [Member]
Segment Reporting Information [Line Items]
Income before income taxes									23,981	15,472	16,147
Real estate inventories	272,619				297,471				272,619	297,471
Total assets	298,602				313,921				298,602	313,921
Operating segments [Member] | Financial Services Segment [Member]
Segment Reporting Information [Line Items]
Financial Services Income Loss From Continuing Operations Before Taxes									9,673	7,466	5,777
Total assets	19,885				12,840				19,885	12,840
Corporate [Member]
Segment Reporting Information [Line Items]
Income before income taxes									(65,889)	(45,091)	(39,698)
Total assets	$ 228,010				$ 262,740				228,010	262,740
Homebuilding
Segment Reporting Information [Line Items]
Total revenues									3,261,009	2,808,901	2,403,922
Homebuilding | All HomeBuilding Segments [Member]
Segment Reporting Information [Line Items]
Total revenues									3,261,009	2,808,901	2,403,922
Homebuilding | Operating segments [Member] | Maracay Homes [Member]
Segment Reporting Information [Line Items]
Total revenues									263,321	296,768	255,253
Homebuilding | Operating segments [Member] | Pardee Homes [Member]
Segment Reporting Information [Line Items]
Total revenues									999,710	826,033	730,848
Homebuilding | Operating segments [Member] | Quadrant Homes [Member]
Segment Reporting Information [Line Items]
Total revenues									307,706	247,939	213,221
Homebuilding | Operating segments [Member] | Trendmaker Homes [Member]
Segment Reporting Information [Line Items]
Total revenues									310,730	253,825	244,001
Homebuilding | Operating segments [Member] | Tri Pointe [Member]
Segment Reporting Information [Line Items]
Total revenues									1,073,592	927,247	723,186
Homebuilding | Operating segments [Member] | Winchester Homes [Member]
Segment Reporting Information [Line Items]
Total revenues									305,950	257,089	237,413
Financial services
Segment Reporting Information [Line Items]
Total revenues									$ 1,738	$ 1,371	$ 1,220

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