Perecentage of debt from early extinguishment and prepayment of debt.

No definition available.

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- Definition

Represents the number of depository receipts repurchased under the equity repurchase program.

+ References

No definition available.

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- Definition

Represents the average price at which depository receipts are repurchased under the equity repurchase program.

+ References

No definition available.

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- Definition

Represents the cost per unit of depository receipts.

+ References

No definition available.

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- Definition

Represents the value of the units required to be repurchased.

+ References

No definition available.

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- Definition

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

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- Definition

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

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- Definition

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

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Value of units that were previously issued and have been repurchased during the year.

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- Definition

Units that were previously issued and have been repurchased during the year.

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- Definition

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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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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SUBSEQUENT EVENTS (Details)			1 Months Ended				3 Months Ended	132 Months Ended	139 Months Ended
SUBSEQUENT EVENTS (Details)	Jul. 31, 2014	Aug. 31, 2007 shares	May 31, 2019 USD ($)	May 03, 2019 USD ($) $ / item shares	Apr. 30, 2019 USD ($) shares	Sep. 30, 2007 shares	Mar. 31, 2019 USD ($) shares	Dec. 31, 2018 shares	Mar. 31, 2019 USD ($) $ / item	Mar. 29, 2018 USD ($)
Subsequent events
Number of depository receipts repurchased \| shares		1,408				1,408	1,408	1,408
Repurchase price of depository receipts (in dollars per receipt) \| $ / item									27.97
Total cost of repurchase							$ 2,930,736		$ 43,205,000
Units required to be repurchased (in shares) \| shares							1,795
Loan balance							$ 253,238,000		$ 253,238,000
Webster Green Apartments
Subsequent events
Loan amount										$ 21,500,000
Line of Credit
Subsequent events
Term of debt	3 years
Subsequent event
Subsequent events
Number of depository receipts repurchased \| shares				1,540
Repurchase price of depository receipts (in dollars per receipt) \| $ / item				64.91
Price per unit of depository receipts \| $ / item				1,947.21
Total cost of repurchase				$ 96,861
Subsequent event \| Residences at Captain Parkers LLC Residential Apartments Lexington, Massachusetts
Subsequent events
Loan amount			$ 20,750,000
Term of debt			10 years
Interest rate (as a percent)			4.05%
Loan balance			$ 20,071,000
Mortgage prepayment penalties			$ 200,000
Mortgage prepayment penalties (as a percent)			1.00%
Class B
Subsequent events
Number of depository receipts repurchased \| shares		3,413				3,413	3,413	3,413
Total cost of repurchase							$ 556,828
Class B \| Subsequent event
Subsequent events
Units required to be repurchased (in shares) \| shares					12
Value of units required to be repurchased					$ 23,740
General Partnership
Subsequent events
Number of depository receipts repurchased \| shares		180				180	180	180
Total cost of repurchase							$ 29,307
Units required to be repurchased (in shares) \| shares							18
Value of units required to be repurchased							$ 29,307
General Partnership \| Subsequent event
Subsequent events
Units required to be repurchased (in shares) \| shares					1
Value of units required to be repurchased					$ 1,249