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Investments in Unconsolidated Real Estate Ventures - Summary of Composition of Investments (Details) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |
Total investments in unconsolidated real estate ventures | $ 542,983 | $ 543,026
Prudential Global Investment Management (PGIM) |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity Method Investment, Ownership Percentage | 50.00% |
Total investments in unconsolidated real estate ventures | $ 217,076 | 215,624
Canadian Pension Plan Investment Board (CPPIB) |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity Method Investment, Ownership Percentage | 55.00% |
Total investments in unconsolidated real estate ventures | $ 112,808 | 109,911
Landmark |  |
Schedule of Equity Method Investments [Line Items] |  |
Total investments in unconsolidated real estate ventures | 76,201 | 77,944
CBREI Venture |  |
Schedule of Equity Method Investments [Line Items] |  |
Total investments in unconsolidated real estate ventures | $ 67,084 | 68,405
Berkshire Group |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity Method Investment, Ownership Percentage | 50.00% |
Total investments in unconsolidated real estate ventures | $ 46,859 | 46,391
Brandywine |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity Method Investment, Ownership Percentage | 30.00% |
Total investments in unconsolidated real estate ventures | $ 13,741 | 13,830
Pacific Life Insurance Company |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity Method Investment, Ownership Percentage | 20.00% |
Total investments in unconsolidated real estate ventures | $ 8,653 | 10,385
Other |  |
Schedule of Equity Method Investments [Line Items] |  |
Total investments in unconsolidated real estate ventures | $ 561 | $ 536
Minimum | Landmark |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity Method Investment, Ownership Percentage | 1.80% |
Minimum | CBREI Venture |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity Method Investment, Ownership Percentage | 5.00% |
Maximum | Landmark |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity Method Investment, Ownership Percentage | 49.00% |
Maximum | CBREI Venture |  |
Schedule of Equity Method Investments [Line Items] |  |
Equity Method Investment, Ownership Percentage | 64.00% |

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