Quarterly report pursuant to Section 13 or 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2022
USD ($)
property
Sep. 30, 2021
USD ($)
Sep. 30, 2022
USD ($)
property
Sep. 30, 2021
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2021
USD ($)
Disaggregation of Revenue [Line Items]            
Initial term of unconsolidated real estate venture agreements     4 years      
Performance obligation period of recognition     4 years      
Unconsolidated real estate ventures | property 1,100   1,100      
Tenant Insurance and Tenant Warranty Protection Plan Revenues            
Disaggregation of Revenue [Line Items]            
Revenue $ 5,000,000 $ 3,800,000 $ 14,800,000 $ 10,500,000    
Retail Products and Supplies            
Disaggregation of Revenue [Line Items]            
Revenue 600,000 600,000 2,000,000 1,800,000    
Property Management, Call Center, and Platform Fees            
Disaggregation of Revenue [Line Items]            
Revenue 4,200,000 3,800,000 $ 12,200,000 10,900,000    
Property management fees as percent of monthly gross revenues and net sales revenue of unconsolidated real estate venture assets     6.00%      
Platform fees per unconsolidated real estate venture property per month     $ 1,250      
Call center fees as percent of monthly gross revenues and net sales revenue of unconsolidated real estate venture assets     1.00%      
Acquisition Fees            
Disaggregation of Revenue [Line Items]            
Revenue 200,000 200,000 $ 1,200,000 600,000    
Acquisition fee         $ 4,000,000  
Deferred revenue related to acquisition fees 0   0     $ 500,000
Tenant Warranty Protection or Tenant Insurance            
Disaggregation of Revenue [Line Items]            
Revenue $ 2,100,000 $ 2,100,000 $ 7,300,000 $ 6,200,000    
Unconsolidated real estate ventures | property 1   1      
Percent of total warranty protection plan proceeds received per unconsolidated real estate venture property     50.00%