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Investments in Partially Owned Entities - Summary of Companys Investment in Unconsolidated Entities (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Investments in Unconsolidated Entities | $ 52,907 | $ 58,349
Operating Property [Member] | Unconsolidated Non-VIE [Member] |  |
Variable Interest Entity [Line Items] |  |
Investments in Unconsolidated Entities |  | 10,494
Ownership Percentage | 20.00% |
Other [Member] |  |
Variable Interest Entity [Line Items] |  |
Investments in Unconsolidated Entities | $ 11,524 | 5,490
Consolidated VIE [Member] | Wisconsin Place Developer [Member] |  |
Variable Interest Entity [Line Items] |  |
Investments in Unconsolidated Entities | $ 41,383 | $ 42,365
Ownership Percentage | 33.30% |

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