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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Mortgage Loans Receivable and Notes Receivable (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Mar. 31, 2020
Multi Family Same-Store \| Ironwood \| Tax Increment Financing
Real Estate Properties [Line Items]
Loan commitment	$ 5.7	$ 6.1	$ 6.6
Interest rate on mortgages payable	4.50%
Multi Family Residential \| Inver Grove Heights, Minnesota \| Mezzanine Loan
Real Estate Properties [Line Items]
Interest rate on mortgages payable	10.00%
Mortgage loans receivable	$ 15.1
Multi Family Residential \| Inver Grove Heights, Minnesota \| Mezzanine Loan \| Other Assets
Real Estate Properties [Line Items]
Mortgage loans receivable	$ 1.6