REPORTING SEGMENTS - Reconciliation to Net Income (Loss) (Detail) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018 USD ($)	Jun. 30, 2017 USD ($)	Jun. 30, 2018 USD ($) segment	Jun. 30, 2017 USD ($)
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	$ 980,828	$ 908,494	$ 1,733,161	$ 1,677,584
Gross margin	178,711	171,420	321,813	313,113
Selling, general and administrative expenses	(100,065)	(95,410)	(187,080)	(184,155)
Equity in income of unconsolidated entities	4,017	3,071	7,263	4,156
Interest and other (expense), net	(3,378)	(675)	(3,473)	(234)
Income/(loss) before income taxes	79,285	78,406	138,523	132,880
Operating Segments | East
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenues	360,472	320,053	645,279	583,718
Gross margin	65,128	68,988	117,417	122,346
Selling, general and administrative expenses	(31,105)	(29,337)	(59,738)	(56,506)
Equity in income of unconsolidated entities	128	0	239	0
Interest and other (expense), net	(122)	(129)	(600)	(213)
Income/(loss) before income taxes	34,029	39,522	57,318	65,627
Operating Segments | Central
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenues	298,112	267,562	512,224	473,819
Gross margin	53,653	48,413	94,280	85,621
Selling, general and administrative expenses	(26,122)	(25,933)	(48,402)	(47,425)
Equity in income of unconsolidated entities	374	226	755	58
Interest and other (expense), net	(130)	602	(238)	258
Income/(loss) before income taxes	27,775	23,308	46,395	38,512
Operating Segments | West
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenues	305,978	305,245	545,186	590,164
Gross margin	54,816	48,487	100,840	94,067
Selling, general and administrative expenses	(20,061)	(18,854)	(35,626)	(37,907)
Equity in income of unconsolidated entities	1,476	685	2,571	602
Interest and other (expense), net	(101)	(67)	(81)	(192)
Income/(loss) before income taxes	36,130	30,251	67,704	56,570
Operating Segments | Financial Services
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenues	16,266	15,634	30,472	29,883
Gross margin	5,114	5,532	9,276	11,079
Selling, general and administrative expenses	0	0	0	0
Equity in income of unconsolidated entities	2,039	2,160	3,698	3,496
Interest and other (expense), net	0	0	0	0
Income/(loss) before income taxes	7,153	7,692	12,974	14,575
Corporate and Unallocated
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total revenues	0	0	0	0
Gross margin	0	0	0	0
Selling, general and administrative expenses	(22,777)	(21,286)	(43,314)	(42,317)
Equity in income of unconsolidated entities	0		0	0
Interest and other (expense), net	(3,025)	(1,081)	(2,554)	(87)
Income/(loss) before income taxes	$ (25,802)	$ (22,367)	$ (45,868)	$ (42,404)