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Disposals of Operating Properties and Impairment Charges - Additional Information (Details) $ in Thousands | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 USD ($) property | Dec. 31, 2019 USD ($) property | Dec. 31, 2018 USD ($) property | Dec. 31, 2017 USD ($) property | Feb. 27, 2019 USD ($) | Jun. 29, 2018 USD ($) property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Proceeds from sale of real estate |  | $ 529,417 | $ 218,387 | $ 76,075 |  |
Depreciation and amortization |  | $ 37,723 | $ 70,360 | 7,411 |  |
Property, plant, and equipment, fair value disclosure |  |  |  | 26,000 |  |
Seven unnamed impaired properties |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Number of real estate properties | property |  | 7 |  |  |  |
Depreciation and amortization |  | $ 37,700 |  |  |  |
Property, plant, and equipment, fair value disclosure |  | 176,000 |  |  |  |
Four unnamed impaired properties |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Number of real estate properties | property | 7 |  | 7 |  |  |
Depreciation and amortization | $ 70,400 |  | $ 70,400 |  |  |
Property, plant, and equipment, fair value disclosure | $ 130,200 |  | 130,200 |  |  |
Scenario, Plan |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Real estate held-for-sale |  |  |  |  | $ 500,000 |
2019 Operating Properties Sold |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Proceeds from sale of real estate |  | 543,800 |  |  |  |
Gain on disposal |  | $ 39,000 |  |  |  |
Trussville Promenade, Memorial Commons, Lake Lofts at Deerwood, Hamilton Crossing, Fox Lake Crossing and Lowe's Plaza |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Proceeds from sale of real estate |  |  | 122,200 |  |  |
Livingston Shopping Center, Plaza Volente, and Tamiami Crossing |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Gain on disposal |  |  | $ 3,400 |  |  |
Cove Center, Clay Marketplace, Shops at Village Walk and Wheatland Towne Crossing |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Proceeds from sale of real estate |  |  |  | 76,100 |  |
Gain on disposal |  |  |  | $ 15,200 |  |
TH Joint Venture | Livingston Shopping Center, Plaza Volente, and Tamiami Crossing |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Number of real estate properties | property | 3 |  | 3 |  |  | 3
Consideration received | $ 99,800 |  | $ 99,800 |  |  | $ 99,800
TH Joint Venture |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Noncontrolling interest, ownership percentage by parent | 80.00% |  | 80.00% |  |  |
Disposed of by sale | 2019 Operating Properties Sold |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Number of real estate properties | property |  | 23 |  |  |  |
Disposed of by sale | Trussville Promenade, Memorial Commons, Lake Lofts at Deerwood, Hamilton Crossing, Fox Lake Crossing and Lowe's Plaza |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Number of real estate properties | property | 6 |  | 6 |  |  |
Disposed of by sale | Cove Center, Clay Marketplace, Shops at Village Walk and Wheatland Towne Crossing |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |
Number of real estate properties | property |  |  |  | 4 |  |

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