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Investments in Partially Owned Entities - Operating Properties - Additional Information (Details) $ in Thousands | 9 Months Ended |
--- | --- | ---
Sep. 30, 2017 USD ($) Property ApartmentUnit | Dec. 31, 2016 USD ($)
Variable Interest Entity [Line Items] |  |
Properties | Property | 305 |
Apartment Units | ApartmentUnit | 78,302 |
Investments in unconsolidated entities | $ 59,029 | $ 60,141
Secured Debt | $ 3,619,180 | $ 4,119,181
Nexus Sawgrass [Member] |  |
Variable Interest Entity [Line Items] |  |
Apartment Units | ApartmentUnit | 501 |
Investments in unconsolidated entities | $ 4,400 |
Equity Method Investment, Ownership Percentage | 20.00% |
Secured Debt | $ 48,600 |
Debt Instrument, Interest Rate, Stated Percentage | 5.60% |
Debt Instrument, Maturity Date | Jan. 01, 2021 |
Consolidated VIE |  |
Variable Interest Entity [Line Items] |  |
Properties | Property | 17 |
Apartment Units | ApartmentUnit | 3,215 |
Investments in unconsolidated entities | $ 45,035 |
Secured Debt | $ 302,037 |
Unconsolidated VIE |  |
Variable Interest Entity [Line Items] |  |
Properties | Property | 0 |
Apartment Units | ApartmentUnit | 0 |
Investments in unconsolidated entities | $ 0 |
Secured Debt | $ 0 |
Operating Property [Member] | Consolidated VIE |  |
Variable Interest Entity [Line Items] |  |
Properties | Property | 16 |
Apartment Units | ApartmentUnit | 2,783 |
Wisconsin Place [Member] | Consolidated VIE |  |
Variable Interest Entity [Line Items] |  |
Apartment Units | ApartmentUnit | 432 |
Joint venture ownership percentage owned by company | 75.00% |
Basis of joint venture | $ 167,000 |
Wisconsin Place [Member] | Unconsolidated VIE |  |
Variable Interest Entity [Line Items] |  |
Investments in unconsolidated entities | $ 45,000 |
Domain [Member] |  |
Variable Interest Entity [Line Items] |  |
Apartment Units | ApartmentUnit | 444 |
Investments in unconsolidated entities | $ 8,400 |
Equity Method Investment, Ownership Percentage | 20.00% |
Secured Debt | $ 96,800 |
Debt Instrument, Interest Rate, Stated Percentage | 5.75% |
Debt Instrument, Maturity Date | Jan. 01, 2022 |

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