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Investment in Unconsolidated Real Estate Ventures - Aggregate Principal Payments of Recourse and Non-recourse Debt Payable to Third-parties (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Schedule Of Equity Method Investments [Line Items] |  |
2019 | $ 7,595 |
2020 | 87,226 |
2021 | 15,143 |
2022 | 348,832 |
2023 | 556,736 |
Thereafter | 1,028,610 |
Total principal payments | 370,319 | $ 768,912
Net deferred financing costs | (10,241) |
Outstanding indebtedness | 365,707 | $ 766,420
Unconsolidated Real Estate Ventures [Member] |  |
Schedule Of Equity Method Investments [Line Items] |  |
2019 | 4,998 |
2020 | 1,290 |
2021 | 58,651 |
2022 | 25,277 |
2023 | 280,005 |
Thereafter | 98 |
Total principal payments | 370,319 |
Net deferred financing costs | (4,612) |
Outstanding indebtedness | $ 365,707 |

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