Number of floors real estate

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- Definition

Partners Joint Venture Ownership Percentage

+ References

No definition available.

+ Details

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- Definition

Square Footage Of Signed Lease.

+ 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 equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

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- Definition

Net rentable area for properties owned.

+ References

No definition available.

+ Details

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- Definition

The cash outflow associated with the purchase of or advances to an equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: 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=31042434&loc=d3e3213-108585

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Subsequent Events subsequent Events (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		0 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Apr. 10, 2014 Salesforece Tower (formerly Transbay Tower) [Member] floor sqft	Feb. 26, 2013 Salesforece Tower (formerly Transbay Tower) [Member]	Feb. 07, 2013 Salesforece Tower (formerly Transbay Tower) [Member]	Apr. 10, 2014 five zero one K Street [Member] sqft	Apr. 30, 2014 Annapolis Junction Building Eight [Member] sqft	Apr. 10, 2014 Company [Member] Salesforece Tower (formerly Transbay Tower) [Member]	Apr. 10, 2014 Company [Member] five zero one K Street [Member]	Apr. 30, 2014 Company [Member] Annapolis Junction Building Eight [Member]
Subsequent Event [Line Items]
Capital contributions to unconsolidated joint ventures	$ 0	$ 113				$ 39,000	$ 5,400
Equity Method Investment, Ownership Percentage									50.00%	50.00%
Ownership Percentage				95.00%				95.00%
Square Footage Of Signed Lease			714,000
Net Rentable Area			1,400,000			520,000	125,000
Partners Joint Venture Ownership Percentage				5.00%	50.00%	50.00%
Number of floors real estate			61