Variable Interest Entities - Summarized Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Net Investment in Real Estate	$ 3,025,429	$ 2,861,860
Total Assets	3,518,828	3,142,691
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Loans Payable, Net	173,685	296,470
Total Liabilities and Equity/Partners' Capital	3,518,828	3,142,691
Other Real Estate Partnerships
ASSETS
Net Investment in Real Estate	240,847	260,528
Other Assets, Net	69,982	25,059
Total Assets	310,829	285,587
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Loans Payable, Net	11,009	20,497
Other Liabilities, Net	21,088	9,045
Partners' Capital	278,732	256,045
Total Liabilities and Equity/Partners' Capital	$ 310,829	$ 285,587