Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

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Nominal or face amount used to calculate payment on derivative.

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Amount, after valuation allowance, of financing receivable held for sale and not part of disposal group. Excludes loan covered under loss sharing agreement and loan classified as investment in debt security.

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Fair Value - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value measurement gain/(loss)	$ 49,034	$ (7,435)
Home Building
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior Notes	913,027	914,888
Mortgage Banking
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance	222,560	316,806
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance	222,560	316,806
Mortgage Banking \| Level 2 \| Not Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment income (expense)	56,469	(25,673)	$ 2,654
Mortgage Banking \| Level 2 \| Fair Value, Measurements, Recurring \| Rate lock commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value measurement gain/(loss)	60,982
Derivative, Notional Amount	2,110,217
Derivative, Notional Amount	2,110,217
Mortgage Banking \| Level 2 \| Fair Value, Measurements, Recurring \| Forward sales contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value measurement gain/(loss)	(18,297)
Derivative, Notional Amount	1,856,541
Derivative, Notional Amount	1,856,541
Mortgage Banking \| Level 2 \| Fair Value, Measurements, Recurring \| Mortgages held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value measurement gain/(loss)	6,349	(2,675)
Derivative, Notional Amount	216,211	319,481
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance	222,560	316,806
Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance	222,560	316,806
Derivative, Notional Amount	$ 216,211	$ 319,481