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Variable Interest Entities - Summarized Balance Sheet (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
ASSETS |  |
Net Investment in Real Estate | $ 2,705,826 | $ 2,588,422
Total Assets | 2,941,062 | 2,793,263
LIABILITIES AND PARTNERS' CAPITAL |  |
Mortgage Loans Payable, Net | 450,056 | 495,956
Total Liabilities and Equity/Partners' Capital | 2,941,062 | 2,793,263
Other Real Estate Partnerships |  |
ASSETS |  |
Net Investment in Real Estate | 270,708 | 278,398
Other Assets, Net | 23,530 | 24,401
Total Assets | 294,238 | 302,799
LIABILITIES AND PARTNERS' CAPITAL |  |
Mortgage Loans Payable, Net | 61,256 | 70,366
Other Liabilities, Net | 9,283 | 9,138
Partners' Capital | 223,699 | 223,295
Total Liabilities and Equity/Partners' Capital | $ 294,238 | $ 302,799

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