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Segment Information, Nature of Operations, and Certain Concentrations - Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | $ 5,834,475 | $ 5,777,141
Contract land deposit reserve | (30,041) | (52,205)
Home Building |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 5,455,443 | 5,214,516
Cash and cash equivalents | 2,545,069 | 2,714,720
Deferred taxes | 132,894 | 132,980
Operating Lease, Right-of-Use Asset | 59,010 | 53,110
Finance Lease, Right-of-Use Asset, after Accumulated Amortization | 14,578 | 15,772
Mortgage Banking |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 379,032 | 562,625
Cash and cash equivalents | 28,398 | 63,547
Operating Lease, Right-of-Use Asset | 9,758 | 12,439
Profit before taxes: |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 2,997,449 | 2,770,522
Profit before taxes: | Home Building | Mid Atlantic |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 1,322,818 | 1,140,910
Profit before taxes: | Home Building | North East |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 235,048 | 202,591
Profit before taxes: | Home Building | Mid East |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 438,700 | 377,448
Profit before taxes: | Home Building | South East |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 629,198 | 494,295
Profit before taxes: | Mortgage Banking |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 371,685 | 555,278
Reconciling items: |  |
Segment Reporting, Asset Reconciling Item [Line Items] |  |
Total assets | 2,837,026 | 3,006,619
Cash and cash equivalents | 2,545,069 | 2,714,720
Deferred taxes | 132,894 | 132,980
Intangible assets and goodwill | 49,368 | 49,678
Operating Lease, Right-of-Use Asset | 59,010 | 53,110
Finance Lease, Right-of-Use Asset, after Accumulated Amortization | 14,578 | 15,772
Contract land deposit reserve | (30,041) | (52,205)
Consolidation adjustments and other | $ 66,148 | $ 92,564

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