Segment Disclosures - Corporate Capital Allocation Change (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate Capital Allocation	$ 28,966	$ 25,618
Operating Segments [Member] | Homebuilding Mid Atlantic [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate Capital Allocation	18,156	16,107
Operating Segments [Member] | Homebuilding North East [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate Capital Allocation	2,449	1,994
Operating Segments [Member] | Homebuilding Mid East [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate Capital Allocation	5,298	5,015
Operating Segments [Member] | Homebuilding South East [Member]
Segment Reporting, Other Significant Reconciling Item [Line Items]
Corporate Capital Allocation	$ 3,063	$ 2,502