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MORTGAGE AND OTHER INDEBTEDNESS, NET (Fixed Rate Loans Financed) (Details) $ in Thousands | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 USD ($) extension_option | Jun. 30, 2016 USD ($) | Apr. 30, 2016 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) extension_option | Dec. 31, 2016 extension_option | Jan. 01, 2018 | Nov. 30, 2016
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Net unamortized premiums |  |  |  |  |  |  | $ 12,031 |  |  |
Real Estate Loan |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Extinguishment of debt |  | $ 98,181 |  |  |  |  |  |  |  |
Hickory Point |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated Interest Rate |  |  | 5.85% |  |  |  |  |  |  |
Amount Financed |  |  | $ 27,446 |  |  |  |  |  |  |
Extension option, term |  |  | 1 year |  |  |  |  |  |  |
Hamilton Place |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated Interest Rate |  | 4.36% |  |  |  |  |  |  |  |
Amount Financed |  | $ 107,000 |  |  |  |  |  |  |  |
Hamilton Place | Real Estate Loan |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated Interest Rate |  | 5.86% |  |  |  |  |  |  |  |
Cary Towne Center |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated Interest Rate | 4.00% |  |  |  |  |  |  | 4.00% |  | 8.50%
Amount Financed | $ 46,716 |  |  |  |  |  |  |  |  |
Extension option, term |  |  |  |  |  |  |  | 2 years |  |
Number of extension options available (extension option) | extension_option | 1 |  |  |  |  |  |  | 1 |  |
Greenbrier Mall |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated Interest Rate | 5.00% |  |  |  |  |  |  | 5.00% |  | 5.91%
Amount Financed | $ 70,801 |  |  |  |  |  |  |  |  |
Extension option, term |  |  |  |  |  |  |  | 1 year |  |
Greenbrier Mall | Scenario, Forecast |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Stated Interest Rate |  |  |  |  |  |  |  |  | 5.4075% |
Monthly principal payments required |  |  |  | $ 325 | $ 300 | $ 225 |  |  |  |
Fixed Rate Operating Loans |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Net unamortized premiums |  |  |  |  |  |  | $ (199) |  |  |
Weighted average remaining term to maturity |  |  |  |  |  |  | 3 years 6 months 25 days |  |  |
Minimum |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Number of extension options available (extension option) | extension_option |  |  |  |  |  |  | 1 |  |  |
Minimum | Fixed Rate Operating Loans |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Fixed interest, percentage rate |  |  |  |  |  |  | 4.00% |  |  |
Maximum | Fixed Rate Operating Loans |  |  |  |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |
Fixed interest, percentage rate |  |  |  |  |  |  | 8.00% |  |  |

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