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Investments in Real Estate Partnerships - Schedule of Investments in Real Estate Partnerships (Parenthetical) (Details) - USD ($) $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2020 | Sep. 30, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Ownership Percentage |  |  | 0.00% |  | 0.00% |  |
Provision for impairment of real estate, net of tax |  |  | $ 18,536 |  | $ 54,174 |  | $ 38,437
Other Investments in Real Estate Partnerships [Member] |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Percentage of purchase of remaining property | 70.00% |  |  |  |  |  |
Additional Ownership Percentage Acquired | 16.62% |  |  |  | 9.00% |  |
Ownership Percentage | 35.00% |  |  |  |  |  | 9.38%
US Regency Retail 1, LLC [Member] |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Ownership Percentage |  |  | 20.01% | [1] | 20.01% | [2] |
US Regency Retail 1, LLC [Member] | Accounts Payable and Accrued Liabilities [Member] |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Negative Investment Balance | $ 4,400 | $ 3,900 |  |  |  |  |
Equity One JV Portfolio, LLC [Member] |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |
Ownership Percentage |  |  | 30.00% | [3] | 30.00% | [4] |
Provision for impairment of real estate, net of tax |  | $ (10,900) |  |  |  |  |
[1] | The USAA partnership has distributed proceeds from debt refinancing and real estate sales in excess of Regency’s carrying value of its investment, resulting in a negative investment balance of $4.4 million, which is recorded within Accounts Payable and other liabilities in the Consolidated Balance Sheets.
[2] | The USAA partnership has distributed proceeds from debt refinancing and real estate sales in excess of Regency’s carrying value of its investment resulting in a negative investment balance of $3.9 million, which is recorded within Accounts Payable and other liabilities in the Consolidated Balance Sheets.
[3] | On January 1, 2020, the Company purchased the remaining 70% of a property owned by the NYC partnership (Country Walk Plaza), as discussed in note 2, and therefore all earnings of this property are included in consolidated results from the date of acquisition and excluded from partnership earnings.
[4] | During the third quarter of 2019, a $10.9 million impairment of real estate was recognized within the NYC partnership from changes in the expected hold periods of various properties.

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