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Investment in Unconsolidated Real Estate Ventures - Summary of Financial Position of Real Estate Ventures (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | --- | --- | --- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Net property | $ 3,101,931 |  | $ 3,371,231 |  |  |
Other assets | 117,959 |  | 115,678 |  |  |
Other liabilities | 32,104 |  | 15,985 |  |  |
Debt, net | 2,201,755 |  |  |  |  |
Equity | 1,570,849 | $ 1,603,814 | 1,688,303 | $ 1,729,665 | $ 1,760,463 | $ 1,811,028
MAP Venture |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Net property | 186,865 |  | 192,582 |  |  |
Other assets | 251,765 |  | 256,453 |  |  |
Other liabilities | 266,383 |  | 266,200 |  |  |
Debt, net | 182,279 |  | 181,525 |  |  |
Equity | (10,032) |  | 1,310 |  |  |
Other |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Net property | 651,223 |  | 641,785 |  |  |
Other assets | 85,123 |  | 85,549 |  |  |
Other liabilities | 15,706 |  | 23,871 |  |  |
Debt, net | 426,988 |  | 403,543 |  |  |
Equity | 293,652 |  | 299,920 |  |  |
Total |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |
Net property | 838,088 |  | 834,367 |  |  |
Other assets | 336,888 |  | 342,002 |  |  |
Other liabilities | 282,089 |  | 290,071 |  |  |
Debt, net | 609,267 |  | 585,068 |  |  |
Equity | $ 283,620 |  | $ 301,230 |  |  |

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- Definition Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 + Details
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