REPORTING SEGMENTS - Reconciliation to Net Income (Loss) (Detail) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) segment	Mar. 31, 2018 USD ($)
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Number of reporting segments included in operating component | segment	3
Total revenues	$ 925,092	$ 752,333
Gross margin	172,040	143,102
Selling, general and administrative expenses	(103,883)	(87,016)
Equity in (loss)/income of unconsolidated entities	2,319	3,246
Interest and other (expense)/income, net	(2,404)	(94)
Income/(loss) before income taxes	68,072	59,238
Operating Segments | East
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenues	354,952	284,807
Gross margin	61,176	52,289
Selling, general and administrative expenses	(35,559)	(28,634)
Equity in (loss)/income of unconsolidated entities	0	111
Interest and other (expense)/income, net	(1,613)	(478)
Income/(loss) before income taxes	24,004	23,288
Operating Segments | Central
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenues	254,947	214,113
Gross margin	42,344	40,627
Selling, general and administrative expenses	(26,264)	(22,280)
Equity in (loss)/income of unconsolidated entities	(89)	381
Interest and other (expense)/income, net	(807)	(108)
Income/(loss) before income taxes	15,184	18,620
Operating Segments | West
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenues	299,149	239,207
Gross margin	63,197	46,024
Selling, general and administrative expenses	(20,564)	(15,565)
Equity in (loss)/income of unconsolidated entities	821	1,095
Interest and other (expense)/income, net	(389)	20
Income/(loss) before income taxes	43,065	31,574
Operating Segments | Financial Services
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenues	16,044	14,206
Gross margin	5,323	4,162
Selling, general and administrative expenses	0	0
Equity in (loss)/income of unconsolidated entities	1,409	1,659
Interest and other (expense)/income, net	0	0
Income/(loss) before income taxes	6,732	5,821
Corporate and Unallocated
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenues	0	0
Gross margin	0	0
Selling, general and administrative expenses	(21,496)	(20,537)
Equity in (loss)/income of unconsolidated entities	178	0
Interest and other (expense)/income, net	405	472
Income/(loss) before income taxes	$ (20,913)	$ (20,065)