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Segment Disclosures - Income before Taxes (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Income before taxes | $ 470,692 | $ 433,810
Equity-based compensation expense | (17,141) | (22,277)
Home Building Segment |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Income before taxes | 441,678 | 405,750
Mortgage Banking |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Income before taxes | 29,014 | 28,060
Operating Segments |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Income before taxes | 424,284 | 402,402
Operating Segments | Home Building Segment | Mid Atlantic |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Income before taxes | 189,964 | 159,038
Operating Segments | Home Building Segment | North East |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Income before taxes | 46,858 | 32,060
Operating Segments | Home Building Segment | Mid East |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Income before taxes | 66,401 | 56,468
Operating Segments | Home Building Segment | South East |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Income before taxes | 91,405 | 125,409
Operating Segments | Mortgage Banking |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Income before taxes | 29,656 | 29,427
Corporate and Reconciling Items |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Income before taxes | 46,408 | 31,408
Segment Reconciling Items |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Contract land deposit reserve adjustment | 7,466 | 3,591
Equity-based compensation expense | (17,141) | (22,277)
Corporate capital allocation | 77,061 | 69,074
Unallocated corporate overhead | (51,705) | (45,965)
Consolidation adjustments and other | (2,271) | 4,000
Corporate, Non-Segment |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |
Corporate Interest Expense | (6,595) | (6,954)
Interest income | $ 39,593 | $ 29,939

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