Investments in Unconsolidated Joint Ventures - Summary of Investments in Unconsolidated Joint Ventures (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Schedule Of Equity Method Investments [Line Items]
Investments in unconsolidated joint ventures	$ 6,128	$ 5,749
712 Fifth Avenue [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage	50.00%
Investments in unconsolidated joint ventures	$ 2,690	1,697
Oder-Center, Germany [Member]
Schedule Of Equity Method Investments [Line Items]
Equity method ownership percentage	9.50%
Investments in unconsolidated joint ventures	$ 3,438	$ 4,052

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

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)

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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.

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