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IMPAIRMENT (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2020
USD ($)
ft²
Mar. 31, 2019
USD ($)
Dec. 31, 2019
USD ($)
Impaired Long-Lived Assets Held and Used [Line Items]      
Impairment of real estate $ 48,738,000 $ 0  
Impairment on real estate 0   $ 0
Outlet Collection, Riverwalk      
Impaired Long-Lived Assets Held and Used [Line Items]      
Impairment of real estate $ 48,738,000 $ 0  
Area of real estate property (in sqft) | ft² 268,556    
Assets, fair value disclosure $ 46,800,000    
Fair Value, Measurements, Nonrecurring | Valuation Technique, Discounted Cash Flow | Measurement Input, Cap Rate      
Impaired Long-Lived Assets Held and Used [Line Items]      
Fair value capitalization rate 0.100