Investments in Partially Owned Entities (Related Party Transactions) (Details) $ in Thousands |
12 Months Ended |
---|---|
Dec. 31, 2019
USD ($)
| |
Joint Venture | Fifth Avenue and Times Square JV | |
Schedule of Equity Method Investments [Line Items] | |
Related party transaction annual fee percentage | 2.00% |
Supervisory fee, percentage | 1.50% |
Vornado Realty Trust | Joint Venture | Fifth Avenue and Times Square JV | |
Schedule of Equity Method Investments [Line Items] | |
Supervisory fee, percentage | 5.00% |
Fee and other income from related parties (in US dollars) | $ 3,085 |
Building Maintenance Service | Majority-Owned Subsidiary, Unconsolidated | |
Schedule of Equity Method Investments [Line Items] | |
Revenue from related parties | $ 3,087 |