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Investments in Unconsolidated Joint Ventures - Narrative (Details) |  |  |  |  |  |  |  |  |  | 12 Months Ended |
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Nov. 14, 2022 USD ($) | Aug. 02, 2022 USD ($) | Feb. 02, 2022 USD ($) | Dec. 31, 2021 USD ($) | Oct. 26, 2021 USD ($) | Mar. 29, 2021 USD ($) | Dec. 29, 2020 USD ($) | Dec. 10, 2020 USD ($) | Nov. 17, 2020 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) property | Dec. 28, 2020
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Write-down of assets |  |  |  |  |  |  |  |  |  | $ 15,045,000 | $ 67,344,000 | $ 76,705,000 |
Fashion District Philadelphia |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, percentage of voting interests acquired |  |  |  |  |  |  |  | 100.00% |  |  |  |  |
Sears South Plains |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, percentage of voting interests acquired |  |  |  |  |  |  |  |  |  |  |  | 100.00% |
Sears Deptford Mall And Vintage Faire Mall |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Business acquisition, percentage of voting interests acquired |  | 100.00% |  |  |  |  |  |  |  |  |  |  |
Joint venture |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Number of properties | property |  |  |  |  |  |  |  |  |  |  |  | 9 |
Joint venture | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease the mortgage note payable |  |  |  |  |  |  |  | $ 201,000,000 |  |  |  |  |
Joint venture | Fashion District Philadelphia |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of mortgage note payable |  |  |  |  |  |  |  | 100,000,000 |  |  |  |  |
Joint venture | Fashion District Philadelphia | Minimum |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease the mortgage note payable |  |  |  |  |  |  |  | $ 301,000,000 |  |  |  |  |
Repaid accrued interest percentage |  |  |  |  |  |  |  | 15.00% |  |  |  |  |
Joint venture | Fashion District Philadelphia | Maximum |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Decrease the mortgage note payable |  |  |  |  |  |  |  | $ 201,000,000 |  |  |  |  |
Joint venture | Sears South Plains |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Write-down of assets |  |  |  |  |  |  |  |  |  | $ 27,054,000 |  |  |
Joint venture | Sears Deptford Mall And Vintage Faire Mall |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price on acquisition |  | $ 24,544,000 |  |  |  |  |  |  |  |  |  |  |
Joint venture | Sears Deptford Mall And Vintage Faire Mall | Third Party |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage (as a percent) |  | 50.00% |  |  |  |  |  |  |  |  |  |  |
Joint venture | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate spread (as a percent) | 4.00% |  |  |  |  |  |  |  |  |  |  |  |
Joint venture | SOFR | Fashion District Philadelphia |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate spread (as a percent) |  |  |  |  |  |  |  | 3.60% |  |  |  |  |
Tysons Corner LLC | Joint venture |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  |  | $ 95,000,000 |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  | 3.43% |  |  |  |
Tysons Corner LLC | Joint venture | Initial Funding |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  |  | $ 90,000,000 |  |  |  |
Tysons Corner LLC | Joint venture | General Corporate Purposes |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  |  | 45,000,000 |  |  |  |
Tysons Corner LLC | Joint venture | Future Advance Potential |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  |  |  |  |  | $ 5,000,000 |  |  |  |
Fashion District Philadelphia |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  |  |  |  | 7.62% |  |  |
Fashion District Philadelphia | Joint venture |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Joint venture, cash distribution, percent |  |  |  |  |  |  |  | 50.00% |  |  |  |  |
FlatIron Crossing |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt |  |  |  |  |  |  | $ 7,650,000 |  |  |  |  |  |
FlatIron Crossing | Joint venture |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  | $ 175,000,000 |  |  |  |  |  |  |  |  |  |
Interest rate (as a percent) |  |  |  |  |  |  | 4.10% |  |  |  |  |  | 3.85%
Extension term |  |  |  |  |  |  | 1 year |  |  |  |  |  |
Repayments of debt |  |  | $ 197,011,000 |  |  |  | $ 15,000,000 |  |  |  |  |  |
FlatIron Crossing | Joint venture | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate spread (as a percent) |  |  | 3.70% |  |  |  |  |  |  |  |  |  |
Interest rate cap (as a percent) |  |  | 4.00% |  |  |  |  |  |  |  |  |  |
Paradise Valley Mall | Joint venture |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage (as a percent) |  |  |  |  |  | 5.00% |  |  |  |  |  |  |
Payments for joint venture |  |  |  |  |  | $ 3,819,000 |  |  |  |  |  |  |
The Shops at Atlas Park | Joint venture |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Debt issued |  |  |  |  | $ 65,000,000 |  |  |  |  |  |  |  |
The Shops at Atlas Park | Joint venture | LIBOR |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate spread (as a percent) |  |  |  |  | 4.15% |  |  |  |  |  |  |  |
Interest rate cap (as a percent) |  |  |  |  | 3.00% |  |  |  |  |  |  |  |
North Bridge,Chicago Illinois | Joint venture |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Loss on Investments |  |  |  | $ 28,276,000 |  |  |  |  |  |  | $ 28,276,000 |  |
North Wabash,Chicago Illinois | Joint venture |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from divestiture of interest in joint venture |  |  |  | $ 21,000,000 |  |  |  |  |  |  |  |  |
Washington Square Member |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt | $ 9,000 |  |  |  |  |  |  |  |  |  |  |  |
Washington Square Member | Joint venture |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of debt | $ 15,000 |  |  |  |  |  |  |  |  |  |  |  |
Joint venture extension term | 4 years |  |  |  |  |  |  |  |  |  |  |  |
Washington Square Member | Joint venture | SOFR |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in unconsolidated joint ventures: |  |  |  |  |  |  |  |  |  |  |  |  |
Variable interest rate spread (as a percent) | 4.00% |  |  |  |  |  |  |  |  |  |  |  |

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