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Segment Information, Nature of Operations, and Certain Concentrations - Consolidated assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Assets | $ 6,380,988 | $ 6,601,757
Finance lease right-of-use assets | 37,638 | 13,310
Allowance for losses on contract land deposits | (58,597) | (53,397)
Home Building |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Assets | 5,888,232 | 6,142,087
Cash and cash equivalents | 2,561,339 | 3,126,472
Deferred tax assets, net | 142,192 | 148,005
Operating lease right-of-use assets | 78,340 | 70,384
Finance lease right-of-use assets | 37,638 | 13,310
Mortgage Banking |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Assets | 492,756 | 459,670
Cash and cash equivalents | 49,636 | 36,422
Operating lease right-of-use assets | 23,482 | 23,541
Operating Segments |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Assets | 3,502,540 | 3,184,246
Operating Segments | Home Building | Mid Atlantic |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Assets | 1,337,659 | 1,252,360
Operating Segments | Home Building | North East |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Assets | 368,300 | 314,904
Operating Segments | Home Building | Mid East |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Assets | 396,854 | 368,154
Operating Segments | Home Building | South East |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Assets | 914,318 | 796,505
Operating Segments | Mortgage Banking |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Assets | 485,409 | 452,323
Corporate And Reconciling Items |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Assets | 2,878,448 | 3,417,511
Intangible assets and goodwill | 49,368 | 49,368
Allowance for losses on contract land deposits | (58,597) | (53,397)
Consolidation adjustments and other | 68,168 | 63,369
Corporate And Reconciling Items | Home Building |  |
Segment Reporting, Other Significant Reconciling Item [Line Items] |  |
Cash and cash equivalents | 2,561,339 | 3,126,472
Deferred tax assets, net | 142,192 | 148,005
Operating lease right-of-use assets | 78,340 | 70,384
Finance lease right-of-use assets | $ 37,638 | $ 13,310

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