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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Significant Accounting Policies [Line Items] |  |  |
Allowance for losses on contract land deposits | $ 58,597 | $ 53,397 |
Net Contract Land Deposit Impairment Charges (Recoveries) | $ 7,200 | (2,900) | $ 27,500
Model home furniture and fixtures |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 2 years |  |
Office facilities and other | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 3 years |  |
Office facilities and other | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 10 years |  |
Manufacturing Facilities | Minimum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 5 years |  |
Manufacturing Facilities | Maximum |  |  |
Significant Accounting Policies [Line Items] |  |  |
Property, Plant and Equipment, Useful Life | 40 years |  |
Home Building |  |  |
Significant Accounting Policies [Line Items] |  |  |
Cash | $ 2,561,339 | 3,126,472 |
Reorganization value in excess of amounts allocable to identifiable assets, net | 41,580 | 41,580 |
Customer deposits | 322,926 | 334,441 |
Mortgage Banking |  |  |
Significant Accounting Policies [Line Items] |  |  |
Cash | 49,636 | 36,422 |
Reorganization value in excess of amounts allocable to identifiable assets, net | $ 7,347 | 7,347 |
Mortgage Banking | Level 2 | Fair Value, Measurements, Recurring |  |  |
Significant Accounting Policies [Line Items] |  |  |
Typical length of days loans sold into secondary market | 30 days |  |
Mortgage Banking | Level 2 | Fair Value, Measurements, Recurring | Rate lock commitments |  |  |
Significant Accounting Policies [Line Items] |  |  |
Derivative, Notional Amount | $ 2,006,907 |  |
Mortgage Banking | Level 2 | Fair Value, Measurements, Recurring | Forward sales contracts |  |  |
Significant Accounting Policies [Line Items] |  |  |
Derivative, Notional Amount | 2,140,042 |  |
Other Assets |  |  |
Significant Accounting Policies [Line Items] |  |  |
Capitalized Contract Cost, Net | $ 21,700 | $ 17,900 |

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