Fair Value Disclosures (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Disclosed at fair value:
Other notes payable	$ 18,842	$ 20,024
Level 2
Disclosed at fair value:
Financial Services debt	264,043	437,804
Senior notes payable	2,979,498	3,243,750
Level 1
Disclosed at fair value:
Cash, cash equivalents, and restricted cash	401,915	306,168
Land held for sale \| Fair Value, Measurements, Nonrecurring \| Level 2
Measured at fair value on a non-recurring basis:
Fair value	5,279	8,600
House and land inventory \| Fair Value, Measurements, Nonrecurring \| Level 3
Measured at fair value on a non-recurring basis:
Fair value	1,631	11,045
Interest rate lock commitments \| Fair Value, Measurements, Recurring \| Level 2
Measured at fair value on a recurring basis:
Assets, fair value	11,634	5,583
Forward contracts \| Fair Value, Measurements, Recurring \| Level 2
Measured at fair value on a recurring basis:
Liabilities, fair value	(2,240)	(385)
Whole loan commitments \| Fair Value, Measurements, Recurring \| Level 2
Measured at fair value on a recurring basis:
Assets, fair value	406
Liabilities, fair value		(147)
Residential Mortgage \| Fair Value, Measurements, Recurring \| Level 2
Measured at fair value on a recurring basis:
Assets, fair value	$ 369,634	$ 570,600

Fair Value, Assets and Liabilities Measured on Non-Recurring Basis [Abstract]

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Fair Value Disclosure [Abstract]

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This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a nonrecurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value on a recurring basis by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
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Aggregation of the liabilities reported on the balance sheet measured at fair value on a recurring basis by the entity.

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Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time.

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Amount of long-term notes payable classified as other.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
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