Useful life on which depreciation was computed for entities with a substantial portion of business acquiring and holding investment real estate, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 970
-SubTopic 360
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-28(Column I))
-URI http://asc.fasb.org/extlink&oid=120402810&loc=d3e638233-123024

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- Definition

The amount of interest capitalized to an operative builder's inventory during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

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- Definition

Amount of real estate investment property, net of accumulated depreciation, which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03.1(d))
-URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Real Estate Investments (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Real Estate Properties [Line Items]
Real estate investments	$ 1,827,578,000	$ 1,413,308,000
Construction period interest capitalized	$ 0	$ 0	$ 0
Minimum \| Buildings and Improvements
Real Estate Properties [Line Items]
Estimated useful life of assets (in years)	10 years
Minimum \| Renovations and Improvements
Real Estate Properties [Line Items]
Estimated useful life of assets (in years)	5 years
Minimum \| Furniture, Fixtures and Equipment
Real Estate Properties [Line Items]
Estimated useful life of assets (in years)	5 years
Maximum \| Buildings and Improvements
Real Estate Properties [Line Items]
Estimated useful life of assets (in years)	37 years
Maximum \| Renovations and Improvements
Real Estate Properties [Line Items]
Estimated useful life of assets (in years)	20 years
Maximum \| Furniture, Fixtures and Equipment
Real Estate Properties [Line Items]
Estimated useful life of assets (in years)	10 years