Reporting Segments - Assets from Segment (Detail) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Segment Reporting, Asset Reconciling Item [Line Items]
Real estate inventory and land deposits	$ 3,099,981	$ 3,054,452
Investments in unconsolidated entities	171,815	157,909
Other assets	876,949	1,008,565
Total assets	4,148,745	4,220,926
Operating Segments | East
Segment Reporting, Asset Reconciling Item [Line Items]
Real estate inventory and land deposits	1,143,204	1,110,340
Investments in unconsolidated entities	26,073	25,923
Other assets	69,049	80,320
Total assets	1,238,326	1,216,583
Operating Segments | Central
Segment Reporting, Asset Reconciling Item [Line Items]
Real estate inventory and land deposits	862,457	829,354
Investments in unconsolidated entities	29,977	30,146
Other assets	119,868	139,383
Total assets	1,012,302	998,883
Operating Segments | West
Segment Reporting, Asset Reconciling Item [Line Items]
Real estate inventory and land deposits	1,094,320	1,114,758
Investments in unconsolidated entities	112,150	98,625
Other assets	30,059	43,304
Total assets	1,236,529	1,256,687
Operating Segments | Mortgage Operations
Segment Reporting, Asset Reconciling Item [Line Items]
Real estate inventory and land deposits	0	0
Investments in unconsolidated entities	3,615	3,215
Other assets	145,003	269,131
Total assets	148,618	272,346
Corporate and Unallocated
Segment Reporting, Asset Reconciling Item [Line Items]
Real estate inventory and land deposits	0	0
Investments in unconsolidated entities	0	0
Other assets	512,970	476,427
Total assets	$ 512,970	$ 476,427