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Segment Disclosures - Corporate Capital Allocation Charge (Detail) - Corporate and Reconciling Items [Member] - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |  |
Corporate capital allocation charge | $ 49,646 | $ 46,259 | $ 95,833 | $ 90,574
Homebuilding [Member] | Mid Atlantic [Member] |  |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |  |
Corporate capital allocation charge | 31,005 | 28,766 | 60,130 | 55,951
Homebuilding [Member] | North East [Member] |  |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |  |
Corporate capital allocation charge | 4,133 | 4,447 | 7,947 | 9,400
Homebuilding [Member] | Mid East [Member] |  |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |  |
Corporate capital allocation charge | 7,535 | 7,458 | 14,277 | 14,157
Homebuilding [Member] | South East [Member] |  |  |  |
Segment Reporting Other Significant Reconciling Item [Line Items] |  |  |  |
Corporate capital allocation charge | $ 6,973 | $ 5,588 | $ 13,479 | $ 11,066

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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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