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Segment Disclosures - Revenues (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Segment Reporting, Revenue Reconciling Item [Line Items]
Total consolidated revenues	$ 1,203,166	$ 1,188,967	$ 3,116,530	$ 2,969,115
Homebuilding Mid Atlantic [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	702,645	685,822	1,825,500	1,712,592
Homebuilding North East [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	96,015	88,451	267,245	233,322
Homebuilding Mid East [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	257,649	266,598	629,385	650,817
Homebuilding South East [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	128,851	126,724	346,297	313,942
Mortgage Banking [Member]
Segment Reporting, Revenue Reconciling Item [Line Items]
Mortgage Banking	$ 18,006	$ 21,372	$ 48,103	$ 58,442

X

- Definition

The noninterest income derived from mortgage banking activities (fees and commissions), excluding fees earned from servicing third-party assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 13

-Article 9



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.13 (d))

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882

+ Details

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Balance Type:	credit
Period Type:	duration

X

- Definition

Revenue related to the sale of homes and home building activities including design, development, general contracting, and renovation services for residential buildings, including single-family houses, multifamily housing, townhouses, apartments, and modular housing.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1(e))

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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X

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

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