Number of agreements signed to sell or dispose off the properties during the period.

No definition available.

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- Definition

Number of real estate properties classified as held for sale.

+ References

No definition available.

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- Definition

Sale amount of pending disposition.

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No definition available.

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- Definition

Area of a real estate property.

+ References

No definition available.

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- Definition

Date the declared dividend will be paid, in CCYY-MM-DD format.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586

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- Definition

The per share amount of a dividend declared, but not paid, as of the financial reporting date.

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- Definition

Date the dividend to be paid was declared, in CCYY-MM-DD format.

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- Definition

Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format.

+ 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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6382943&loc=d3e33918-111571

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- Definition

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

+ References

No definition available.

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- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585

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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.

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No definition available.

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SUBSEQUENT EVENTS (Details)				3 Months Ended
SUBSEQUENT EVENTS (Details)	Aug. 26, 2016 USD ($) property	Aug. 05, 2016 USD ($) ft² item	Aug. 04, 2016 USD ($)	Jul. 31, 2016 $ / shares	Sep. 01, 2016 $ / shares	Jul. 31, 2015 $ / shares
Subsequent Event [Line Items]
Quarterly amount per share or unit (in dollars per share) \| $ / shares				$ 0.13		$ 0.13
Common Shares and Limited Partnership Units [Member]
Subsequent Event [Line Items]
Dividends Payable, Date Declared				Sep. 01, 2016
Record Date				Sep. 15, 2016
Payment Date				Oct. 03, 2016
Series A Preferred Stock [Member]
Subsequent Event [Line Items]
Dividends Payable, Date Declared				Sep. 01, 2016
Record Date				Sep. 15, 2016
Payment Date				Sep. 30, 2016
Series B Preferred Stock [Member]
Subsequent Event [Line Items]
Dividends Payable, Date Declared				Sep. 01, 2016
Record Date				Sep. 15, 2016
Payment Date				Sep. 30, 2016
Subsequent Event [Member] \| Common Shares and Limited Partnership Units [Member]
Subsequent Event [Line Items]
Quarterly amount per share or unit (in dollars per share) \| $ / shares					$ 0.1300
Subsequent Event [Member] \| Series A Preferred Stock [Member]
Subsequent Event [Line Items]
Quarterly amount per share or unit (in dollars per share) \| $ / shares					0.5156
Subsequent Event [Member] \| Series B Preferred Stock [Member]
Subsequent Event [Line Items]
Quarterly amount per share or unit (in dollars per share) \| $ / shares					$ 0.4968
Subsequent Event [Member] \| Multi-Family Residential [Member] \| Minneapolis, Minnesota [Member]
Subsequent Event [Line Items]
Number of apartment units \| item		150
Area of real estate property \| ft²		23,600
Cash consideration \| $		$ 47,600,000
Subsequent Event [Member] \| Senior Housing properties [Member]
Subsequent Event [Line Items]
Number of agreements to sell \| $	$ 6
Number of real estate properties classified as held for sale \| property	26
Sales price of pending disposition \| $	$ 236,000,000
Subsequent Event [Member] \| RED 20 - Minneapolis, MN [Member]
Subsequent Event [Line Items]
Interest in joint venture (in hundredths)			41.41%
Cash consideration \| $			$ 4,900,000