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MORTGAGE AND OTHER INDEBTEDNESS, NET - Variable Rate Debt (Details) - USD ($) $ in Thousands | 1 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Aug. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Debt Instrument [Line Items] |  |  |  |  |
Principal Balance Repaid |  |  |  | $ 17,278 | $ 427,247
Statesboro Crossing, LLC |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Amount Financed / Extended |  |  |  |  | $ 10,930
Statesboro Crossing, LLC | LIBOR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Basis spread on variable rate (as a percent) |  |  | 1.80% |  |
Variable Rate Debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Weighted-average remaining term to maturity |  |  |  | 6 months 24 days |
Minimum | Variable Rate Debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Variable interest rate (as a percent) |  |  |  | 4.85% |
Maximum | Variable Rate Debt |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Variable interest rate (as a percent) |  |  |  | 5.00% |
Term of extension option |  |  |  | 2 years |
Other Property | Statesboro Crossing, LLC |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate at repayment date (as a percent) |  | 4.24% |  |  |
Principal Balance Repaid |  | $ 10,753 |  |  |
Malls | The Outlet Shoppes at El Paso - Phase II |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate at repayment date (as a percent) | 4.73% |  |  |  |
Principal Balance Repaid | $ 6,525 |  |  |  |

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