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Organization and Significant Accounting Policies - Organization and Principles of Consolidation (Details) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2022 USD ($) RetailShoppingCenter | Dec. 31, 2021 USD ($)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Unsecured public and private notes | $ | $ 200,000 |
Tenant and other receivables | $ | 151,852 | $ 153,091
Management, transaction, and other fee [Member] |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Tenant and other receivables | $ | $ 13,800 | $ 13,200
Operating Partnership [Member] |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Ownership percentage of outstanding common partnership units | 99.60% |
Wholly Owned Properties [Member] |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of real estate properties | 303 |
Partially Owned Properties [Member] |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of real estate properties | 113 |
Consolidated Properties [Member] |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of real estate properties | 10 |
Unconsolidated Properties [Member] |  |
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |
Number of real estate properties | 103 |

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