Fair Value Disclosures Fair Value Disclosures (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Disclosed at fair value:
Other Notes Payable	$ 20,024	$ 19,282
Debt Instrument, Fair Value Disclosure	3,243,750	3,112,297
Fair Value, Inputs, Level 1 [Member]
Disclosed at fair value:
Cash and equivalents (including restricted cash), fair value	306,168	723,248
Fair Value, Inputs, Level 2 [Member]
Disclosed at fair value:
Financial Services debt, fair value	437,804	331,621
House and land inventory [Member] \| Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Measured at fair value on a non-recurring basis:
Assets, Fair Value Disclosure, Nonrecurring	11,045	8,920
Interest Rate Lock Commitments [Member] \| Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Measured at fair value on a recurring basis:
Assets, Fair Value Disclosure, Recurring	5,583	8,693
Forward Contracts [Member] \| Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Measured at fair value on a recurring basis:
Assets, Fair Value Disclosure, Recurring		7,081
Liabilities, Fair Value Disclosure, Recurring	(385)
Whole Loan Commitments [Member] \| Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Measured at fair value on a recurring basis:
Assets, Fair Value Disclosure, Recurring		272
Liabilities, Fair Value Disclosure, Recurring	(147)
Residential Mortgage [Member] \| Fair Value, Measurements, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Measured at fair value on a recurring basis:
Assets, Fair Value Disclosure, Recurring	570,600	539,496
Land Held For Sale [Member] \| Fair Value, Measurements, Nonrecurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Measured at fair value on a non-recurring basis:
Assets, Fair Value Disclosure, Nonrecurring	$ 8,600	$ 1,670

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
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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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-Topic 942
-SubTopic 210
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