Fair value measurement assumed gain (loss) from loan sale.

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- Definition

Fair value measurement changes attributable to servicing rights value changes.

+ References

No definition available.

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- Definition

Interest rate movement effect on fair value measurement.

+ References

No definition available.

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- Definition

Security price change effect on fair value measurement.

+ References

No definition available.

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- Definition

Fair Value, Principal Amount, Loans Held for Sale

+ References

No definition available.

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=121590274&loc=SL5618551-113959

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
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-Section 50
-Paragraph 4CC
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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.

+ References

No definition available.

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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.

+ References

No definition available.

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 30
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612

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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.

+ References

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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
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Fair Value - Fair Value Measurement (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assumed Gain/(Loss) From Loan Sale			$ 3,393
Interest Rate Movement Effect			757
Servicing Rights Value			8,464
Security Price Change			(471)
Total Fair Value Measurement Gain/(Loss)			12,143		$ 14,111
Mortgage Banking [Member] \| Level 2 [Member] \| Not Designated as Hedging Instrument [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value adjustment income (expense)	$ 1,735	$ (8,711)	(1,968)	$ 2,842
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member] \| Rate Lock Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	791,352		791,352
Assumed Gain/(Loss) From Loan Sale			1,995
Interest Rate Movement Effect			820
Servicing Rights Value			5,514
Total Fair Value Measurement Gain/(Loss)			8,329
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member] \| Forward Sales Contracts [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Disclosure, Off-balance Sheet Risks, Face Amount, Liability	958,681		958,681
Security Price Change			(471)
Total Fair Value Measurement Gain/(Loss)			(471)
Mortgage Banking [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member] \| Mortgages Held for Sale [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assumed Gain/(Loss) From Loan Sale			1,398
Interest Rate Movement Effect			(63)
Servicing Rights Value			2,950
Fair Value, Option, Changes in Fair Value, Gain (Loss)			4,285		7,019
Fair Value, Principal Amount, Loans Held for Sale	336,642		336,642		485,106
Home Building [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes	1,517,982		1,517,982		598,301
Senior notes	1,517,982		1,517,982		598,301
Home Building [Member] \| Senior Notes Due Two Thousand Thirty [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes	919,214		919,214		0
Senior notes	919,214		919,214		0
Home Building [Member] \| Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes	1,517,982		1,517,982		598,301
Senior notes	1,517,982		1,517,982		598,301
Home Building [Member] \| Senior Notes due 2022 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior notes	598,768		598,768		598,301
Senior notes	598,768		598,768		598,301
Home Building [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member] \| Senior Notes Due Two Thousand Thirty [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior Notes fair value	970,227		970,227		0
Senior Notes fair value	970,227		970,227		0
Home Building [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member] \| Senior Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior Notes fair value	1,603,935		1,603,935		626,520
Senior Notes fair value	1,603,935		1,603,935		626,520
Home Building [Member] \| Level 2 [Member] \| Fair Value, Recurring [Member] \| Senior Notes due 2022 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Senior Notes fair value	633,708		633,708		626,520
Senior Notes fair value	$ 633,708		$ 633,708		$ 626,520