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Fair Value Measurements - Long-Lived Assets Measured at Fair Value (Details)
 3 Months Ended
Mar. 31, 2021
USD ($)
mall
Mar. 31, 2022
USD ($)
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair Value $ 38,500,000  
Loss on impairment $ 57,182,000  
Number of malls with impairment | mall 3  
Malls    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair Value $ 38,500,000  
Loss on impairment 57,182,000  
Significant Unobservable Inputs (Level 3)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair Value 38,500,000  
Greenbrier Mall    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair Value   $ 0
Eastland Mall | Malls    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair Value 10,700,000  
Loss on impairment $ 13,243,000  
Eastland Mall | Malls | Measurement Input, Expected Term    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Holding period 9 years  
Eastland Mall | Malls | Cap Rate (as a percent)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair value measurement input (as a percent) 14.0  
Eastland Mall | Malls | Discount Rate (as a percent)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair value measurement input (as a percent) 15.0  
Old Hickory Mall | Malls    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair Value $ 12,400,000  
Loss on impairment $ 20,149,000  
Old Hickory Mall | Malls | Measurement Input, Expected Term    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Holding period 9 years  
Old Hickory Mall | Malls | Cap Rate (as a percent)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair value measurement input (as a percent) 13.0  
Old Hickory Mall | Malls | Discount Rate (as a percent)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair value measurement input (as a percent) 14.0  
Stroud Mall | Malls    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair Value $ 15,400,000  
Loss on impairment $ 23,790,000  
Stroud Mall | Malls | Measurement Input, Expected Term    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Holding period 9 years  
Stroud Mall | Malls | Cap Rate (as a percent)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair value measurement input (as a percent) 11.75  
Stroud Mall | Malls | Discount Rate (as a percent)    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair value measurement input (as a percent) 12.5  
Asheville Mall and Park Plaza    
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Fair Value $ 0