ACQUISITIONS, DISPOSITIONS AND IMPAIRMENT CHARGES - Schedule of Joint Venture Acquisitions (Details) $ in Thousands	Dec. 31, 2021 USD ($) property_unit	Dec. 01, 2021 USD ($) property_unit	Oct. 01, 2021 USD ($) property_unit	Aug. 18, 2021 USD ($) property_unit
Acquisitions
No. of Units | property_unit	2,576
Level 3 | Measurement Input Market Capitalization Rate | Valuation, Income Approach
Acquisitions
Tangible assets measurement input	0.0475
Primary beneficiary | Multi-family | Unconsolidated joint ventures
Acquisitions
No. of Units | property_unit	1,744
Purchase Price	$ 51,619
Mortgage Debt Assumed/Acquired	$ 116,105
Primary beneficiary | Multi-family | Purchase of properties | Unconsolidated joint ventures
Acquisitions
No. of Units | property_unit	968
Purchase Price	$ 45,588
Mortgage Debt Assumed/Acquired	$ 116,105
Primary beneficiary | Multi-family | Bells Bluff, Nashville, TN | Unconsolidated joint ventures
Acquisitions
No. of Units | property_unit				402
Interest Purchased				41.90%
Purchase Price				$ 27,860
Mortgage Debt Assumed/Acquired				$ 52,000
Primary beneficiary | Multi-family | Bells Bluff, Nashville, TN | Purchase of properties | Unconsolidated joint ventures
Acquisitions
No. of Units | property_unit				402
Interest Purchased				42.00%
Purchase Price				$ 27,860
Mortgage Debt Assumed/Acquired				$ 52,000
Primary beneficiary | Multi-family | Crestmont at Thornblade, Greenville, SC | Unconsolidated joint ventures
Acquisitions
No. of Units | property_unit			266
Interest Purchased			10.00%
Purchase Price			$ 1,600
Mortgage Debt Assumed/Acquired			$ 26,425
Primary beneficiary | Multi-family | Crestmont at Thornblade, Greenville, SC | Purchase of properties | Unconsolidated joint ventures
Acquisitions
No. of Units | property_unit			266
Interest Purchased			10.00%
Purchase Price			$ 1,600
Mortgage Debt Assumed/Acquired			$ 26,425
Primary beneficiary | Multi-family | Crossings of Bellevue, Nashville, TN | Unconsolidated joint ventures
Acquisitions
No. of Units | property_unit		300
Interest Purchased		20.00%
Purchase Price		$ 16,128
Mortgage Debt Assumed/Acquired		$ 37,680
Primary beneficiary | Multi-family | Crossings of Bellevue, Nashville, TN | Purchase of properties | Unconsolidated joint ventures
Acquisitions
No. of Units | property_unit		300
Interest Purchased		20.00%
Purchase Price		$ 16,128
Mortgage Debt Assumed/Acquired		$ 37,680