SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Revenue Recognition (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Tenant Insurance and Tenant Warranty Protection Plan Revenues
Disaggregation of Revenue [Line Items]
Revenue	$ 5,600,000	$ 5,500,000
Retail Products and Supplies
Disaggregation of Revenue [Line Items]
Revenue	500,000	600,000
Property Management, Call Center, and Platform Fees
Disaggregation of Revenue [Line Items]
Revenue	$ 4,300,000	4,200,000
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%
Property Management, Call Center, and Platform Fees | 2024 Joint Venture
Disaggregation of Revenue [Line Items]
Property management fees as percent of monthly gross revenues and net sales revenue of unconsolidated real estate venture assets	4.00%
Acquisition Fees
Disaggregation of Revenue [Line Items]
Revenue	$ 0	0
Tenant Warranty Protection or Tenant Insurance
Disaggregation of Revenue [Line Items]
Revenue	$ 4,700,000	$ 2,800,000
Percent of total warranty protection plan proceeds received per unconsolidated real estate venture property	50.00%