Fair Value Disclosures (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Level 2
Disclosed at fair value:
Financial Services debt	$ 246,952	$ 437,804
Senior notes payable	2,975,317	3,243,750
Level 1
Disclosed at fair value:
Cash, cash equivalents, and restricted cash	184,787	306,168
Land held for sale \| Fair Value, Measurements, Nonrecurring \| Level 2
Measured at fair value on a non-recurring basis:
Fair value	2,086	8,600
House and land inventory \| Fair Value, Measurements, Nonrecurring \| Level 3
Measured at fair value on a non-recurring basis:
Fair value	0	11,045
Interest rate lock commitments \| Fair Value, Measurements, Recurring \| Level 2
Measured at fair value on a recurring basis:
Assets, fair value	11,150	5,583
Forward contracts \| Fair Value, Measurements, Recurring \| Level 2
Measured at fair value on a recurring basis:
Liabilities, fair value	(917)	(385)
Whole loan commitments \| Fair Value, Measurements, Recurring \| Level 2
Measured at fair value on a recurring basis:
Assets, fair value	124
Liabilities, fair value		(147)
Residential Mortgage \| Fair Value, Measurements, Recurring \| Level 2
Measured at fair value on a recurring basis:
Assets, fair value	$ 385,453	$ 570,600

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

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- Definition

Fair Value Disclosure [Abstract]

+ References

No definition available.

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- Definition

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.

+ References

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- Definition

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.

+ References

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- Definition

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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- Definition

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

+ References

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)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611

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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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- Definition

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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