For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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The number of real estate properties owned as of the balance sheet date.

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The number of units in a real estate property owned as of the balance sheet date.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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REAL ESTATE PROPERTIES - Summary of Multi-family Properties (Details) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021 USD ($) property property_unit	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Dec. 31, 2021 USD ($) property property_unit	Dec. 31, 2020 USD ($)
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Properties \| property	8								8
Number of Units \| property_unit	2,576								2,576
2021 Rental and Other Revenue from Real Estate Properties \| $	$ 10,283	$ 7,714	$ 6,961	$ 7,099	$ 7,049	$ 7,313	$ 6,816	$ 6,924	$ 32,057	$ 28,102
Geographic concentration \| Multi-family \| Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Properties \| property	10								10
Number of Units \| property_unit	2,576								2,576
2021 Rental and Other Revenue from Real Estate Properties \| $									$ 32,041
% of 2021 Rental and Other Revenue from Real Estate Properties									100.00%
Georgia \| Geographic concentration \| Multi-family \| Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Properties \| property	2								2
Number of Units \| property_unit	448								448
2021 Rental and Other Revenue from Real Estate Properties \| $									$ 6,723
% of 2021 Rental and Other Revenue from Real Estate Properties									21.00%
Florida \| Geographic concentration \| Multi-family \| Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Properties \| property	1								1
Number of Units \| property_unit	276								276
2021 Rental and Other Revenue from Real Estate Properties \| $									$ 4,594
% of 2021 Rental and Other Revenue from Real Estate Properties									14.00%
South Carolina \| Geographic concentration \| Multi-family \| Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Properties \| property	2								2
Number of Units \| property_unit	474								474
2021 Rental and Other Revenue from Real Estate Properties \| $									$ 4,402
% of 2021 Rental and Other Revenue from Real Estate Properties									14.00%
Virginia \| Geographic concentration \| Multi-family \| Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Properties \| property	1								1
Number of Units \| property_unit	220								220
2021 Rental and Other Revenue from Real Estate Properties \| $									$ 4,273
% of 2021 Rental and Other Revenue from Real Estate Properties									13.00%
Texas \| Geographic concentration \| Multi-family \| Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Properties \| property	1								1
Number of Units \| property_unit	192								192
2021 Rental and Other Revenue from Real Estate Properties \| $									$ 3,895
% of 2021 Rental and Other Revenue from Real Estate Properties									12.00%
Tennessee \| Geographic concentration \| Multi-family \| Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Properties \| property	2								2
Number of Units \| property_unit	702								702
2021 Rental and Other Revenue from Real Estate Properties \| $									$ 3,413
% of 2021 Rental and Other Revenue from Real Estate Properties									11.00%
Ohio \| Geographic concentration \| Multi-family \| Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Properties \| property	1								1
Number of Units \| property_unit	264								264
2021 Rental and Other Revenue from Real Estate Properties \| $									$ 3,232
% of 2021 Rental and Other Revenue from Real Estate Properties									10.00%
Other \| Geographic concentration \| Multi-family \| Revenue
Revenues from External Customers and Long-Lived Assets [Line Items]
Number of Properties \| property	0								0
Number of Units \| property_unit	0								0
2021 Rental and Other Revenue from Real Estate Properties \| $									$ 1,509
% of 2021 Rental and Other Revenue from Real Estate Properties									5.00%