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Segment Disclosures - Corporate Capital Allocation Charge (Detail) - Reconciling Items [Member] - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 | Jun. 30, 2014 | Jun. 30, 2015 | Jun. 30, 2014
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |  |
Corporate capital allocation charge | $ 41,398 | $ 34,511 | $ 78,341 | $ 63,477
Homebuilding Mid Atlantic [Member] |  |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |  |
Corporate capital allocation charge | 26,258 | 21,742 | 49,667 | 39,898
Homebuilding North East [Member] |  |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |  |
Corporate capital allocation charge | 3,805 | 2,733 | 7,115 | 5,182
Homebuilding Mid East [Member] |  |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |  |
Corporate capital allocation charge | 6,672 | 6,180 | 12,607 | 11,478
Homebuilding South East [Member] |  |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |  |
Corporate capital allocation charge | $ 4,663 | $ 3,856 | $ 8,952 | $ 6,919

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- Definition The corporate capital allocation charge is eliminated in consolidation and is based on the segment’s average net assets employed. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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- Details
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