Estimated costs to be expended to complete development projects in process as of the report date.

No definition available.

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- Definition

Estimated cost of active development projects.

+ References

No definition available.

+ Details

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- Definition

Number Of Apartments Owned Through Joint Ventures

+ References

No definition available.

+ Details

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- Definition

Number of units to be developed by the joint venture in the future.

+ References

No definition available.

+ Details

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- Definition

Refers to Estimated costs to be expended by the company to complete development projects in process as of the report date.

+ References

No definition available.

+ Details

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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=66011266&loc=d3e33918-111571

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- Definition

Total investments in (A) an entity in which the entity has significant influence, but does not have control, (B) subsidiaries that are not required to be consolidated and are accounted for using the equity and or cost method, and (C) an entity in which the reporting entity shares control of the entity with another party or group. Includes long-term advances receivable from a party that is affiliated with the reporting entity by means of direct or indirect ownership.

+ 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 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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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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Real Estate Investments - Development Co-Investments (Details) $ in Thousands	Dec. 31, 2016 USD ($) unit	Dec. 31, 2015 USD ($) unit	Aug. 31, 2015 USD ($)	Mar. 31, 2015 USD ($)	Feb. 28, 2015 USD ($) unit
Real Estate Properties [Line Items]
Co-investment	$ 1,161,275	$ 1,036,047	$ 20,400	$ 13,700
Total operating co investments [Member]
Real Estate Properties [Line Items]
Number of apartments owned through joint ventures \| unit	11,274	10,520
Co-investment	$ 781,905	$ 831,521
Total operating co investments [Member] \| Minimum [Member]
Real Estate Properties [Line Items]
Equity method investment, ownership percentage	50.00%
Total operating co investments [Member] \| Maximum [Member]
Real Estate Properties [Line Items]
Equity method investment, ownership percentage	55.00%
Total development co investments [Member]
Real Estate Properties [Line Items]
Number of apartments owned through joint ventures \| unit	1,427	1,676
Co-investment	$ 157,317	$ 98,214
Total development co investments [Member] \| Minimum [Member]
Real Estate Properties [Line Items]
Equity method investment, ownership percentage	50.00%
Total development co investments [Member] \| Maximum [Member]
Real Estate Properties [Line Items]
Equity method investment, ownership percentage	55.00%
Folsom 500 [Member]
Real Estate Properties [Line Items]
Equity method investment, ownership percentage					50.00%
Number of units to be developed \| unit					545
Estimated cost active development projects					$ 415,000
Active development projects estimated costs to be expended	$ 307,600
Remaining estimated cost to be contributed by Company	$ 153,700