Represents the amount of mortgage balance related to third parties.

No definition available.

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- Definition

Represents the number of apartment units in the complex purchased during the period.

+ References

No definition available.

+ Details

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- Definition

It Represents the number of VIEs of the company.

+ References

No definition available.

+ Details

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- Definition

The total amount of revenue recognized for the period from operating leases, including minimum lease revenue, contingent revenue, percentage revenue and sublease revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 25
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=7501430&loc=d3e39896-112707

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- Definition

The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 13
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- Definition

The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. This element is for unclassified presentations; for classified presentations there is a separate and distinct element.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.1)
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 50
-Paragraph 4
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Balance Type:	credit
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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.

+ References

No definition available.

+ Details

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Variable Interest Entities, Contingent Liabilities and Consolidated Joint Ventures - Ground Leases (Details)	3 Months Ended
	Mar. 31, 2017 USD ($) item	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Variable Interest Entities
Number of VIEs \| item	3
Restricted cash	$ 572,000		$ 643,000
The Meadows Apartments, Lakemoor, Illinois; Briarbrook Village Apartments, Wheaton, Illinois and Vue Apartments, Beachwood, Ohio
Variable Interest Entities
Land Contract Purchase Price	$ 33,726,000
Units in Apartment Complex \| item	1,186
Owner/ Operator Mortgage from Third Party	$ 150,679,000
Carrying Amount and Maximum Exposure to Loss	34,029,000
The Meadows Apartments, Lakemoor, Illinois
Variable Interest Entities
Land Contract Purchase Price	$ 9,300,000
Units in Apartment Complex \| item	496
Owner/ Operator Mortgage from Third Party	$ 43,824,000
The Meadows Apartments, Lakemoor, Illinois \| Land
Variable Interest Entities
Carrying Amount and Maximum Exposure to Loss	9,592,000
The Briarbrook Village Apartments Wheaton, Illinois
Variable Interest Entities
Land Contract Purchase Price	$ 10,530,000
Units in Apartment Complex \| item	342
Owner/ Operator Mortgage from Third Party	$ 39,411,000
The Briarbrook Village Apartments Wheaton, Illinois \| Land
Variable Interest Entities
Carrying Amount and Maximum Exposure to Loss	10,536,000
The Vue Apartments, Beachwood, Ohio
Variable Interest Entities
Land Contract Purchase Price	$ 13,896,000
Units in Apartment Complex \| item	348
Owner/ Operator Mortgage from Third Party	$ 67,444,000
The Vue Apartments, Beachwood, Ohio \| Land
Variable Interest Entities
Carrying Amount and Maximum Exposure to Loss	13,901,000
The Meadows Apartments, Lakemoor, Illinois; Briarbrook Village Apartments, Wheaton, Illinois; Vue Apartments, Beachwood, Ohio and River Crossing Apartments, Sandy Springs, Georgia
Variable Interest Entities
Revenue from the ground lease	$ 888,000	$ 428,000
River Crossing Apartments, Sandy Springs, Georgia
Variable Interest Entities
Revenue from the ground lease		$ 151,000