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Investments in Real Estate Entities (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 USD ($) entity agreement | Jun. 30, 2014 USD ($) | Jun. 30, 2015 USD ($) entity home agreement | Jun. 30, 2014 USD ($)
Investment in Real Estate Entities |  |  |  |
Impairment of Real Estate | $ 0 | $ 0 |  | $ 0
Equity Method Investment, Summarized Financial Information, Revenue | 43,395 | 52,270 | $ 88,650 | 104,646
Equity Method Investment, Summarized Financial Information, Operating and Other Expenses | 17,375 | 20,483 | 34,712 | 41,691
Equity in income of unconsolidated real estate entities | 13,806 | 7,710 | 48,371 | 12,933
Gain on sale of communities | 0 | 5,682 | 32,490 | 5,682
Equity Method Investment, Summarized Financial Information Interest Expense | 10,334 | 13,523 | 20,811 | 27,413
Equity Method Investment, Summarized Financial Information, Depreciation and Amortization | 11,942 | 13,863 | 23,845 | 28,280
Equity Method Investment, Summarized Financial Information, Net Income (Loss) | $ 3,744 | $ 10,083 | 41,772 | $ 12,944
Avalon Mills [Member] |  |  |  |
Investment in Real Estate Entities |  |  |  |
Impairment of Real Estate |  |  | 800 |
Fund II |  |  |  |
Investment in Real Estate Entities |  |  |  |
Repayments of secured mortgages |  |  | $ 9,395 |
Fund II | Eaves Plainsboro [Member] |  |  |  |
Investment in Real Estate Entities |  |  |  |
Number of apartment homes sold | home |  |  | 776 |
Proceeds from sale of real estate |  |  | $ 117,000 |
Gain on sale of communities |  |  | $ 9,660 |
Unconsolidated real estate entities |  |  |  |
Investment in Real Estate Entities |  |  |  |
Number of unconsolidated real estate entities | entity | 5 |  | 5 |
Unconsolidated real estate entities | Minimum |  |  |  |
Investment in Real Estate Entities |  |  |  |
Ownership interest percentage | 20.00% |  | 20.00% |
Unconsolidated real estate entities | Maximum |  |  |  |
Investment in Real Estate Entities |  |  |  |
Ownership interest percentage | 31.30% |  | 31.30% |
MVPI LLC [Member] |  |  |  |
Investment in Real Estate Entities |  |  |  |
Fixed rate (as a percent) | 3.24% |  | 3.24% |
Payments for (Proceeds from) Other Real Estate Partnerships |  |  | $ 20,680 |
Noncontrolling Interest, Ownership Percentage by Parent | 25.00% |  | 25.00% |
Secured notes | MVPI LLC [Member] |  |  |  |
Investment in Real Estate Entities |  |  |  |
Repayments of secured mortgages | $ 105,000 |  |  |
Residual Joint Venture [Member] |  |  |  |
Investment in Real Estate Entities |  |  |  |
Equity in income of unconsolidated real estate entities | $ 9,549 |  | $ 11,464 |
Number of Limited Liability Company Agreements | agreement | 3 |  | 3 |
Ownership Interest Held by Subsidiaries | 40.00% |  | 40.00% |

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