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Subsequent Events - Additional Information (Details) $ in Thousands |  |  | 12 Months Ended |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Feb. 13, 2020 USD ($) | Jan. 09, 2020 USD ($) | Dec. 31, 2019 USD ($) property | Dec. 31, 2018 USD ($) | Feb. 07, 2020 USD ($) | Jan. 31, 2020 property | Jan. 17, 2020 USD ($) | Mar. 28, 2018 USD ($) | Nov. 16, 2017 USD ($)
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of retail properties | property |  |  | 186 |  |  |  |  |  |
Purchase Price |  |  | $ 324,339 | $ 186,463 |  |  |  |  |
Mezzanine loan to joint venture partner |  |  | 226,301 |  |  |  |  |  |
Soho Acquisitions | New York, NY |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Purchase Price |  |  | $ 122,000 |  |  |  |  |  |
Subsequent Event | Venture Partner’s Interest | Georgetown Portfolio |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Mezzanine loan to joint venture partner |  |  |  |  | $ 5,000 |  |  |  |
Subsequent Event | New York, NY |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Equity method investments |  |  |  |  |  |  | $ 54,000 |  |
Core Portfolio |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of retail properties | property |  |  | 129 |  |  |  |  |  |
Purchase Price |  |  | $ 146,435 | 1,337 |  |  |  |  |
Equity method investments |  |  | 225,907 | 231,432 |  |  |  | $ 22,300 | $ 61,600
Core Portfolio | Georgetown Portfolio |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Equity method investments |  |  | $ 4,498 | $ 4,653 |  |  |  |  |
Core Portfolio | Subsequent Event |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Number of retail properties | property |  |  |  |  |  | 2 |  |  |
Core Portfolio | Subsequent Event | Soho Acquisitions | 37, Green Street, New York |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Purchase Price |  | $ 15,400 |  |  |  |  |  |  |
Core Portfolio | Subsequent Event | Chicago Illinois Acquisitions | 917 West Armitage Avenue |  |  |  |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |  |  |  |
Purchase Price | $ 3,500 |  |  |  |  |  |  |  |

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