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DISPOSITIONS AND HELD FOR SALE - Gain on Extinguishment of Debt (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
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Dec. 31, 2020 | Aug. 31, 2020 | Jan. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Balance of Non-recourse Debt |  |  |  | $ 91,679 | $ 163,476
Gain on Extinguishment of Debt |  |  |  | $ 32,521 | $ 71,722
Hickory Point Mall | Malls | Forsyth, IL |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Balance of Non-recourse Debt |  | $ 27,446 |  |  |
Gain on Extinguishment of Debt |  | $ 15,446 |  |  |
Burnsville Center | Malls | Burnsville, MN |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Balance of Non-recourse Debt | $ 64,233 |  |  |  |
Gain on Extinguishment of Debt | $ 17,075 |  |  |  |
Acadiana Mall | Malls | Lafayette, LA |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Balance of Non-recourse Debt |  |  | $ 119,760 |  |
Gain on Extinguishment of Debt |  |  | 61,795 |  |
Cary Towne Center | Malls | Cary, NC |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |
Balance of Non-recourse Debt |  |  | 43,716 |  |
Gain on Extinguishment of Debt |  |  | $ 9,927 |  |

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- Definition Amount represents the difference between the cash acquisition price of the debt and the net carrying amount of the debt at the time of its extinguishment (or deconsolidation of in-substance real estate when an entity defaults on its debt obligations). + References No definition available. + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 + Details
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