Investments in Unconsolidated Joint Ventures (Details) (USD $)	6 Months Ended	12 Months Ended
Jun. 30, 2010	Dec. 31, 2010	Feb. 22, 2010
Investments In Unconsolidated Joint Ventures (Textuals) [Abstract]
Interest in seven-building joint venture	49.00%
Number of building closed	1		6
Percentage of leased portion of the seven-building joint venture portfolio		100.00%
Number of grocery store, restaurants and retail in joint venture		1
Equity method investments		$ 196,413,000
Approximate share of non-recourse secured debt assumed by the joint venture		156,729,000
Weighted-average interest rates of non-recourse secured debt assumed by joint venture		7.10%
Unamortized investment in joint venture primarily attributable to real estate and related intangible assets		$ 15,141,000

Approximate share of non-recourse secured debt assumed by the joint venture.

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- Definition

Equity Method Investments Ownership Percentage.

+ Details

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- Definition

Investments In Unconsolidated Joint Ventures.

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- Definition

Number Of Building Closed.

+ Details

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- Definition

Number Of Grocery Store Restaurants And Retail In Joint Venture.

+ Details

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- Definition

Percentage of leased portion of the seven building joint venture portfolio.

+ Details

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- Definition

Unamortized investment in joint venture primarily attributable to real estate and related intangible assets.

+ Details

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- Definition

Weighted-average interest rates of non-recourse secured debt assumed by joint venture.

+ Details

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- Definition

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 17
-Subparagraph b

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