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Investments in Unconsolidated Joint Ventures - Summary of Investments and Income from Investments In Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 11, 2019 | Feb. 07, 2019
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |
Investments in unconsolidated joint ventures | $ 449,180 | $ 78,863 |  |  |
(Loss) income from unconsolidated joint ventures | $ (4,706) | 3,468 | $ 20,185 |  |
712 Fifth Avenue [Member] |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |
Equity method paramount ownership percentage | 50.00% |  |  |  |
(Loss) income from unconsolidated joint ventures | $ 1,849 | 3,901 | 20,072 |  |
Market Center [Member] |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |
Equity method paramount ownership percentage | 67.00% |  |  | 67.00% |
Investments in unconsolidated joint ventures | $ 219,593 |  |  |  |
(Loss) income from unconsolidated joint ventures | $ (744) |  |  |  |
55 Second Street [Member] |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |
Equity method paramount ownership percentage | 44.10% |  |  |  |
Investments in unconsolidated joint ventures | $ 95,384 |  |  |  |
(Loss) income from unconsolidated joint ventures | $ (826) |  |  |  |
111 Sutter Street [Member] |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |
Equity method paramount ownership percentage | 49.00% |  |  |  | 49.00%
Investments in unconsolidated joint ventures | $ 41,519 |  |  |  |
(Loss) income from unconsolidated joint ventures | $ (4,394) |  |  |  |
60 Wall Street [Member] |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |
Equity method paramount ownership percentage | 5.00% |  |  |  |
Investments in unconsolidated joint ventures | $ 19,777 | 22,353 |  |  |
(Loss) income from unconsolidated joint ventures | $ (551) | (518) | (152) |  |
One Steuart Lane [Member] |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |
Equity method paramount ownership percentage | 35.00% |  |  |  |
Investments in unconsolidated joint ventures | $ 69,536 | 52,923 |  |  |
(Loss) income from unconsolidated joint ventures | $ (118) | (18) | 182 |  |
Oder-Center, Germany [Member] |  |  |  |  |
Schedule Of Equity Method Investments [Line Items] |  |  |  |  |
Equity method paramount ownership percentage | 9.50% |  |  |  |
Investments in unconsolidated joint ventures | $ 3,371 | 3,587 |  |  |
(Loss) income from unconsolidated joint ventures | $ 78 | $ 103 | $ 83 |  |

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