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Investment in Unconsolidated Real Estate Ventures - Summary of Financial Position of Real Estate Ventures (Parenthetical) (Details) - USD ($) $ in Millions | Jan. 29, 2016 | Dec. 31, 2015
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Coppell Associates [Member] | Other Liabilities [Member] |  |
Schedule Of Equity Method Investments [Line Items] |  |
Investment in Real Estate Ventures, equity method | $ 1.1 | $ 1.1

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