Represents the closing costs associated with the transaction.

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Represents the closing costs associated with the financing.

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No definition available.

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Represents the amortization period of value of the in-place leases.

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No definition available.

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Represents the aggregate purchase price of real estate properties acquired by the entity.

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Represents the aggregate purchase price of real estate properties acquired by the entity allocated to leases.

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Represents the aggregate purchase price of real estate properties acquired by the entity allocated to tenant relationships.

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No definition available.

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Represents the amortization period of value of the tenant relationships.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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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 cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

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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.

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The cash outflow from the repayment of a long-term debt instrument issued, secured by a first mortgage deed of trust, containing a pledge of real property. The lender has the highest claim on the property in case of default.

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The cash outflow to repay long-term debt that is wholly or partially secured by collateral. Excludes repayments of tax exempt secured debt.

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RENTAL PROPERTIES (Mill Street) (Details)				1 Months Ended	12 Months Ended
RENTAL PROPERTIES (Mill Street) (Details)	Nov. 30, 2021 USD ($) property	Mar. 31, 2020 USD ($)	Dec. 20, 2019 USD ($) item	Mar. 31, 2020 USD ($)	Dec. 31, 2021 USD ($) item	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Nov. 29, 2021 USD ($)	Oct. 29, 2021 USD ($)	Jul. 31, 2014 USD ($)
RENTAL PROPERTIES
Line of credit					$ 0	$ 17,000,000
Payment of debt					$ 2,294,389	$ 2,212,019	$ 1,491,340
Line of Credit
RENTAL PROPERTIES
Loan amount										$ 25,000,000
Maximum borrowings									$ 25,000,000
Number of properties in which borrowing amount collateralized \| item					23
Master Credit Facility [Member]
RENTAL PROPERTIES
Line of credit	$ 89,000,000
Loan amount	$ 156,000,000							$ 65,305,000
Interest rate (as a percent)	2.97%
Number of properties in which borrowing amount collateralized \| property	11
Payment of debt	$ 65,305,000
Mortgage prepayment penalties	$ 2,700,000
Mill Street Gardens Residential Apartments Woburn Massachusetts
RENTAL PROPERTIES
Number of units \| item			181
Purchase price of real estate properties			$ 59,550,000
Closing costs associated with financing			237,000
Line of credit			18,000,000
Cash from reserves			10,550,000
Loan amount			31,000,000
Purchase price allocated to the value of the in-place leases			1,282,000
Purchase price allocated to the value of the tenant relationships			$ 136,000
Amortization period of value of the in-place leases			12 years
Amortization period of value of the tenant relationships			36 months
Mill Street Gardens Residential Apartments Woburn Massachusetts \| Maximum
RENTAL PROPERTIES
Loan amount			$ 35,000,000
Mill Street Gardens Residential Apartments Woburn Massachusetts \| Initial Advance
RENTAL PROPERTIES
Loan amount			$ 31,000,000
Interest rate (as a percent)			3.586%
Mill Street Gardens Residential Apartments Woburn Massachusetts \| Subsequent Advance
RENTAL PROPERTIES
Loan amount			$ 4,000,000
Interest rate (as a percent)			3.50%
Brookside Associates LLC Residential Apartments Woburn, Massachusetts
RENTAL PROPERTIES
Loan amount		$ 6,175,000		$ 6,175,000
Interest rate (as a percent)		3.53%		3.53%
Repayment of loan		$ 2,390,000		$ 2,390,000
Closing Costs		$ 136,000		$ 136,000