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Investment in Consolidated and Unconsolidated Entities - Schedule of Consolidated Variable interest Entities (Details) - River Oaks And Kyle Marketplace - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Total assets | $ 184,041 | $ 0
Total liabilities | 10,649 | 0
Net assets | 173,392 | 0
Net investment properties |  |
Variable Interest Entity [Line Items] |  |
Total assets | 167,017 | 0
Other assets |  |
Variable Interest Entity [Line Items] |  |
Total assets | 17,024 | 0
Other liabilities |  |
Variable Interest Entity [Line Items] |  |
Total liabilities | $ 10,649 | $ 0

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