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- Definition

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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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

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- Definition

For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Amount, after valuation allowance, of accounts and financing receivables 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	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total fair value measurement gain/(loss)			$ 44,547		$ 17,616
Home Building Segment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior Notes carrying value	$ 909,654		909,654		911,118
Home Building Segment \| Senior Notes due 2030
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior Notes carrying value	909,654		909,654		911,118
Home Building Segment \| Level 2 \| Fair Value, Recurring \| Senior Notes due 2030
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior Notes fair value	850,950		850,950		811,161
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)	1,043	$ (17,529)	(26,930)	$ (14,027)
Mortgage Banking \| Level 2 \| Fair Value, Recurring \| Rate Lock Commitments
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value disclosure, off-balance sheet risks, face amount, liability	1,714,602		1,714,602
Total fair value measurement gain/(loss)			37,642
Mortgage Banking \| Level 2 \| Fair Value, Recurring \| Forward Sales Contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value disclosure, off-balance sheet risks, face amount, liability	1,728,830		1,728,830
Total fair value measurement gain/(loss)			(1,994)
Mortgage Banking \| Level 2 \| Fair Value, Recurring \| Mortgages Held for Sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trade and loans receivables held-for-sale, net, not part of disposal group	341,579		341,579		$ 355,209
Fair Value, principal amount, loans held for sale	$ 332,680	$ 352,489	332,680	352,489
Fair value, option, changes in fair value, gain (loss)			(8,899)	$ (2,720)
Total fair value measurement gain/(loss)			$ 8,899