INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Narrative (Details) $ in Thousands, ft² in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) a ft² property apartment	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) a ft² property apartment	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of real estate properties	76		76
Accounts receivable | $	$ 11,654		$ 11,654		$ 11,003
Real Estate Venture
Schedule of Equity Method Investments [Line Items]
Accounts receivable | $	3,100		3,100		$ 2,900
Management Fees | Real Estate Venture
Schedule of Equity Method Investments [Line Items]
Service and other revenue | $	2,100	$ 2,100	4,200	$ 4,000
Leasing Commission Income | Real Estate Venture
Schedule of Equity Method Investments [Line Items]
Service and other revenue | $	800	$ 800	1,500	$ 1,100
Unconsolidated Real Estate Ventures
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated real estate ventures | $	$ 589,200		$ 589,200
Unconsolidated Real Estate Ventures | Minimum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	15.00%		15.00%
Unconsolidated Real Estate Ventures | Maximum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	78.00%		78.00%
Unconsolidated Real Estate Ventures | Office Properties
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated investments in Real Estate Ventures	5		5
Rentable area (in square feet) | ft²	9.1		9.1
Unconsolidated Real Estate Ventures | Other Liabilities
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated real estate ventures | $	$ 41,300		$ 41,300
Unconsolidated Real Estate Ventures | Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Number of real estate properties	12		12
Number of properties with negative investment balances	1		1
Unconsolidated Real Estate Ventures | Land Held For Development
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated investments in Real Estate Ventures	2		2
Area of land (in acres) | a	1.4		1.4
Unconsolidated Real Estate Ventures | Land Under Active Development
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated investments in Real Estate Ventures	4		4
Area of land (in acres) | a	7.5		7.5
Unconsolidated Real Estate Ventures | Mixed Use Tower
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated investments in Real Estate Ventures	1		1
Rentable area (in square feet) | ft²	0.2		0.2
Number of apartment units (in units) | apartment	250		250