REPORTING SEGMENTS - Reconciliation to Net Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	$ 1,703,124	$ 1,417,812
Gross margin	393,128	274,441
Selling, general and administrative expenses	(157,265)	(147,505)
Equity in (loss)/income of unconsolidated entities	1,831	5,661
Interest and other income/(expense), net	(4,794)	(856)
Income before income taxes	232,900	131,741
Operating Segments | East
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	525,121	453,362
Gross margin	125,691	85,067
Selling, general and administrative expenses	(40,326)	(38,598)
Equity in (loss)/income of unconsolidated entities	0	0
Interest and other income/(expense), net	(432)	42
Income before income taxes	84,933	46,511
Operating Segments | Central
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	370,735	322,612
Gross margin	74,008	65,178
Selling, general and administrative expenses	(29,440)	(28,558)
Equity in (loss)/income of unconsolidated entities	85	(64)
Interest and other income/(expense), net	(1,860)	(373)
Income before income taxes	42,793	36,183
Operating Segments | West
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	770,210	597,730
Gross margin	181,531	104,438
Selling, general and administrative expenses	(43,519)	(41,554)
Equity in (loss)/income of unconsolidated entities	(312)	1,992
Interest and other income/(expense), net	(1,966)	(108)
Income before income taxes	135,734	64,768
Operating Segments | Financial Services
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	35,199	44,065
Gross margin	10,985	20,066
Selling, general and administrative expenses	0	0
Equity in (loss)/income of unconsolidated entities	2,058	3,743
Interest and other income/(expense), net	0	0
Income before income taxes	13,043	23,809
Corporate and Unallocated
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenue	1,859	43
Gross margin	913	(308)
Selling, general and administrative expenses	(43,980)	(38,795)
Equity in (loss)/income of unconsolidated entities	0	(10)
Interest and other income/(expense), net	(536)	(417)
Income before income taxes	$ (43,603)	$ (39,530)