Represents the period for which the entity is required to make interest only payments on the debt instrument.

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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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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

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Period between issuance and maturity of long-term debt, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

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

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No definition available.

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- Definition

Total distributions to each class of partners (i.e., general, limited and preferred partners).

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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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.

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No definition available.

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Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

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INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (345 Franklin) (Details)	1 Months Ended	12 Months Ended
	Jun. 30, 2013 USD ($)	Dec. 31, 2020 USD ($) item	Dec. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($) item	Nov. 30, 2001 USD ($) item
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Investments in joint venture		$ 1,410,769	$ 1,430,402
Distribution to the Partnership		4,675,754	4,696,893	$ 4,477,923
Outstanding amount of mortgage		283,444,533	$ 281,771,246
Mortgages payable
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Outstanding amount of mortgage		$ 283,445,000
Maximum \| Mortgages payable
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Interest rate (as a percent)		5.66%
345 Franklin
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Investments in joint venture					$ 1,533,000
Ownership interest (as a percent)		50.00%	50.00%	50.00%	50.00%
Number of units \| item		40	40	40	40
Mortgage amount	$ 10,000,000
Interest rate (as a percent)	3.87%
Distribution to the Partnership	$ 1,610,000
Outstanding amount of mortgage		$ 9,099,301	$ 9,298,174	$ 9,489,257
345 Franklin \| Mortgage, 3.87%, June 2013
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Term of debt	15 years
Period for which the entity is required to make interest only payments	3 years
Amortization period of debt	30 years
Outstanding amount of mortgage		$ 9,149,000
345 Franklin \| Mortgage, Paid off June 2013
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Repayment of loan	$ 6,776,000
345 Franklin \| Residential buildings
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Number of units \| item		40	40	40