SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details)	12 Months Ended
	Dec. 31, 2022 USD ($) Segment Investment variableInterestEntity	Dec. 31, 2021 USD ($) Investment	Dec. 31, 2020 USD ($)
Accounting Policies [Line Items]
Number of investments in loans accounted for as real estate joint ventures | Investment	0	0
Assets held for sale	$ 0	$ 0
Restricted cash	4,624,000	3,890,000
Restricted cash obligations	$ 3,900,000	3,200,000
Number of reportable segments | Segment	1
Resident fee and services
Accounting Policies [Line Items]
Grants recognized	$ 100,000	$ 500,000	$ 1,800,000
Loss from unconsolidated joint venture
Accounting Policies [Line Items]
Grants recognized	$ 3,600,000		$ 3,500,000
Minimum | Land improvements
Accounting Policies [Line Items]
Estimated useful lives of assets	15 years
Minimum | Buildings and building improvements
Accounting Policies [Line Items]
Estimated useful lives of assets	5 years
Minimum | Furniture and equipment
Accounting Policies [Line Items]
Estimated useful lives of assets	3 years
Maximum | Land improvements
Accounting Policies [Line Items]
Estimated useful lives of assets	20 years
Maximum | Buildings and building improvements
Accounting Policies [Line Items]
Estimated useful lives of assets	45 years
Maximum | Furniture and equipment
Accounting Policies [Line Items]
Estimated useful lives of assets	10 years
Primary beneficiary
Accounting Policies [Line Items]
Number of variable interest entities | variableInterestEntity	0