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Real Estate (Real Estate Available and Held for Sale) (Details) $ in Thousands		9 Months Ended
		Sep. 30, 2015 USD ($)	Sep. 30, 2014 property	Dec. 31, 2014 USD ($)
Real Estate Properties [Line Items]
Real estate available and held for sale	[1]	$ 296,591		$ 285,982
Residential Operating Properties
Real Estate Properties [Line Items]
Real estate available and held for sale		132,800		155,800
Land & Development
Real Estate Properties [Line Items]
Real estate available and held for sale	[1]	157,693		118,679
Commercial Operating Properties
Real Estate Properties [Line Items]
Property Transferred from HFS, Aggregate, Carrying Value		2,900
Condominium Units
Real Estate Properties [Line Items]
Number of properties acquired | property			2
Net Lease
Real Estate Properties [Line Items]
Real estate available and held for sale	[1]	1,953		4,521
Operating Properties
Real Estate Properties [Line Items]
Real estate available and held for sale	[1]	136,945		$ 162,782
Construction Substantially Complete | Residential Units [Member]
Real Estate Properties [Line Items]
Property Transferred to Held for Sale, Aggregate, Carrying Value		55,500
Executed Contract with Third Party | Net Lease
Real Estate Properties [Line Items]
Property Transferred to Held for Sale, Aggregate, Carrying Value		$ 8,200
[1] As of September 30, 2015 and December 31, 2014, the Company had $132.8 million and $155.8 million, respectively, of residential properties available for sale in its operating properties portfolio.

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Number of Properties Acquired

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Property Transferred from HFS, Aggregate, Carrying Value

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Property Transferred to Held for Sale, Aggregate, Carrying Value

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Carrying amount as of the balance sheet date of investments in land and buildings held for sale, including real estate considered to be inventory of the entity.

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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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