OPERATING AND REPORTING SEGMENTS - Reconciliation to Net Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	$ 2,095,751	$ 2,120,842	$ 6,021,840	$ 5,811,647
Total cost of revenue	1,619,130	1,589,773	4,614,457	4,391,445
Total gross margin	476,621	531,069	1,407,383	1,420,202
Sales, commissions, and other marketing costs	(115,426)	(117,714)	(340,891)	(334,270)
General and administrative expenses	(65,275)	(81,627)	(199,478)	(231,970)
Net (loss)/income from unconsolidated entities	1,253	707	3,554	6,086
Interest and other (expense)/income, net	(24,778)	256	(56,341)	(11,260)
Income before income taxes	272,395	332,691	814,227	848,788
Home closings revenue, net
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	2,000,909	2,029,134	5,797,077	5,585,516
Total cost of revenue	1,558,237	1,525,825	4,476,497	4,231,740
Total gross margin	442,672	503,309	1,320,580	1,353,776
All other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	94,842	91,708	224,763	226,131
All other cost of sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total cost of revenue	60,893	63,948	137,960	159,705
Operating Segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	2,068,258	2,115,519	5,985,511	5,797,135
Total cost of revenue	1,593,372	1,586,220	4,582,604	4,381,313
Total gross margin	474,886	529,299	1,402,907	1,415,822
Sales, commissions, and other marketing costs	(112,884)	(115,537)	(333,357)	(328,419)
General and administrative expenses	(31,130)	(34,226)	(96,087)	(92,780)
Net (loss)/income from unconsolidated entities	2,691	1,371	7,344	7,253
Interest and other (expense)/income, net	(19,096)	1,771	(49,607)	(10,185)
Income before income taxes	314,467	382,678	931,200	991,691
Operating Segments | Home closings revenue, net
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	2,000,909	2,029,134	5,797,077	5,585,516
Total cost of revenue	1,558,237	1,525,825	4,476,497	4,231,740
Total gross margin	442,672	503,309	1,320,580	1,353,776
Operating Segments | All other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	67,349	86,385	188,434	211,619
Operating Segments | All other cost of sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total cost of revenue	35,135	60,395	106,107	149,573
Operating Segments | East
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	745,411	766,821	2,077,818	2,008,762
Total cost of revenue	579,180	557,171	1,606,070	1,475,072
Total gross margin	166,231	209,650	471,748	533,690
Sales, commissions, and other marketing costs	(45,736)	(44,307)	(129,928)	(121,079)
General and administrative expenses	(12,241)	(11,953)	(37,852)	(34,444)
Net (loss)/income from unconsolidated entities	0	0	0	0
Interest and other (expense)/income, net	(2,054)	6,092	(10,398)	4,705
Income before income taxes	106,200	159,482	293,570	382,872
Operating Segments | East | Home closings revenue, net
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	740,346	758,179	2,061,257	1,991,038
Total cost of revenue	573,641	551,542	1,588,326	1,458,270
Total gross margin	166,705	206,637	472,931	532,768
Operating Segments | East | All other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	5,065	8,642	16,561	17,724
Operating Segments | East | All other cost of sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total cost of revenue	5,539	5,629	17,744	16,802
Operating Segments | Central
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	388,632	517,418	1,352,054	1,489,313
Total cost of revenue	302,653	389,771	1,043,535	1,114,807
Total gross margin	85,979	127,647	308,519	374,506
Sales, commissions, and other marketing costs	(27,330)	(34,477)	(89,994)	(99,369)
General and administrative expenses	(7,772)	(10,711)	(23,769)	(25,177)
Net (loss)/income from unconsolidated entities	(15)	38	102	(31)
Interest and other (expense)/income, net	(3,006)	(2,436)	(11,087)	(7,712)
Income before income taxes	47,856	80,061	183,771	242,217
Operating Segments | Central | Home closings revenue, net
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	382,899	515,643	1,342,179	1,468,197
Total cost of revenue	300,499	388,565	1,038,225	1,096,603
Total gross margin	82,400	127,078	303,954	371,594
Operating Segments | Central | All other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	5,733	1,775	9,875	21,116
Operating Segments | Central | All other cost of sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total cost of revenue	2,154	1,206	5,310	18,204
Operating Segments | West
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	878,297	781,626	2,395,599	2,153,531
Total cost of revenue	684,969	611,974	1,852,232	1,710,881
Total gross margin	193,328	169,652	543,367	442,650
Sales, commissions, and other marketing costs	(39,818)	(36,753)	(113,435)	(107,971)
General and administrative expenses	(11,117)	(11,562)	(34,466)	(33,159)
Net (loss)/income from unconsolidated entities	(34)	(4)	(2,623)	49
Interest and other (expense)/income, net	(14,407)	(2,323)	(29,151)	(8,950)
Income before income taxes	127,952	119,010	363,692	292,619
Operating Segments | West | Home closings revenue, net
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	877,664	755,312	2,393,641	2,126,281
Total cost of revenue	684,097	585,718	1,849,946	1,676,867
Total gross margin	193,567	169,594	543,695	449,414
Operating Segments | West | All other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	633	26,314	1,958	27,250
Operating Segments | West | All other cost of sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total cost of revenue	872	26,256	2,286	34,014
Operating Segments | Financial Services
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	55,918	49,654	160,040	145,529
Total cost of revenue	26,570	27,304	80,767	80,553
Total gross margin	29,348	22,350	79,273	64,976
Sales, commissions, and other marketing costs	0	0	0	0
General and administrative expenses	0	0	0	0
Net (loss)/income from unconsolidated entities	2,740	1,337	9,865	7,235
Interest and other (expense)/income, net	371	438	1,029	1,772
Income before income taxes	32,459	24,125	90,167	73,983
Operating Segments | Financial Services | Home closings revenue, net
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	0	0	0	0
Total cost of revenue	0	0	0	0
Total gross margin	0	0	0	0
Operating Segments | Financial Services | All other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	55,918	49,654	160,040	145,529
Operating Segments | Financial Services | All other cost of sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total cost of revenue	26,570	27,304	80,767	80,553
Corporate and Unallocated
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	27,493	5,323	36,329	14,512
Total cost of revenue	25,758	3,553	31,853	10,132
Total gross margin	1,735	1,770	4,476	4,380
Sales, commissions, and other marketing costs	(2,542)	(2,177)	(7,534)	(5,851)
General and administrative expenses	(34,145)	(47,401)	(103,391)	(139,190)
Net (loss)/income from unconsolidated entities	(1,438)	(664)	(3,790)	(1,167)
Interest and other (expense)/income, net	(5,682)	(1,515)	(6,734)	(1,075)
Income before income taxes	(42,072)	(49,987)	(116,973)	(142,903)
Corporate and Unallocated | Home closings revenue, net
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	0	0	0	0
Total cost of revenue	0	0	0	0
Total gross margin	0	0	0	0
Corporate and Unallocated | All other revenue
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	27,493	5,323	36,329	14,512
Corporate and Unallocated | All other cost of sales
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total cost of revenue	$ 25,758	$ 3,553	$ 31,853	$ 10,132