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Segment Information, Nature of Operations, and Certain Concentrations - Profit before Taxes (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Profit before taxes | $ 1,590,403 | $ 1,078,033 | $ 1,025,795
Equity-based compensation expense (2) | (58,234) | (50,794) | (78,532)
Corporate interest expense | (53,117) | (40,872) | (25,380)
Home Building |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Profit before taxes | 1,418,799 | 937,960 | 923,879
Corporate interest expense | (51,530) | (39,458) | (24,335)
Mortgage Banking |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Profit before taxes | 171,604 | 140,073 | 101,916
Corporate interest expense | (1,587) | (1,414) | (1,045)
Profit before taxes: |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Profit before taxes | 1,618,362 | 1,005,479 | 964,075
Corporate interest expense | (254,511) | (240,749) | (225,627)
Profit before taxes: | Home Building | Mid Atlantic |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Profit before taxes | 734,941 | 437,849 | 478,537
Corporate interest expense | (124,385) | (124,486) | (123,178)
Profit before taxes: | Home Building | North East |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Profit before taxes | 105,432 | 50,677 | 51,728
Corporate interest expense | (25,463) | (22,859) | (19,804)
Profit before taxes: | Home Building | Mid East |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Profit before taxes | 271,756 | 168,605 | 173,374
Corporate interest expense | (43,695) | (40,261) | (37,266)
Profit before taxes: | Home Building | South East |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Profit before taxes | 329,982 | 205,029 | 155,144
Corporate interest expense | (59,381) | (51,729) | (44,334)
Profit before taxes: | Mortgage Banking |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Profit before taxes | 176,251 | 143,319 | 105,292
Corporate interest expense | (1,587) | (1,414) | (1,045)
Reconciling items: |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |
Profit before taxes | (27,959) | 72,554 | 61,720
Contract land deposit reserve adjustment | 22,163 | (24,633) | 1,644
Equity-based compensation expense (2) | (58,234) | (50,794) | (78,532)
Corporate capital allocation charge | 252,787 | 239,233 | 224,468
Unallocated corporate overhead | (139,611) | (114,921) | (105,125)
Consolidation adjustments and other (4) | (53,671) | 63,025 | 43,486
Corporate interest expense | $ (51,393) | $ (39,356) | $ (24,221)

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