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Commitments And Contingencies (Summary Of Properties Under Contracts) (Details) $ in Thousands	Aug. 01, 2018 USD ($) a ft² property	Jun. 30, 2018 a ft² property
Real Estate Properties [Line Items]
Number of properties		195
Area of real estate property | ft²		12,500,000
Commitments [Member]
Real Estate Properties [Line Items]
Number of properties	11
Area of real estate property | ft²	672,327
Purchase Price | $	$ 107,607
San Francisco Bay Area [Member] | Commitments [Member]
Real Estate Properties [Line Items]
Number of properties	8
Area of real estate property | ft²	407,417
Purchase Price | $	$ 67,790
Seattle [Member] | Commitments [Member]
Real Estate Properties [Line Items]
Number of properties	3
Area of real estate property | ft²	264,910
Purchase Price | $	$ 39,817
Land Improvements [Member]
Real Estate Properties [Line Items]
Number of properties		11
Area of real estate property | a		51.4
Redevelopment Property [Member]
Real Estate Properties [Line Items]
Number of properties		4
Area of real estate property | ft²		500,000
Outstanding Contract With Third Party [Member] | Industrial Building [Member]
Real Estate Properties [Line Items]
Number of properties	5
Area of real estate property | ft²	672,000
Outstanding Contract With Third Party [Member] | Improved Land Parcels [Member]
Real Estate Properties [Line Items]
Number of properties	1
Area of real estate property | a	1.3
Outstanding Contract With Third Party [Member] | Improved Land Parcels [Member] | San Francisco Bay Area [Member]
Real Estate Properties [Line Items]
Number of properties	1
Area of real estate property | a	1.3

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Area of a real estate property.

+ References

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- Definition

Amount of facility held for productive use including, but not limited to, office, production, storage and distribution facilities, acquired at the acquisition date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84161108&loc=d3e4845-128472

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- Definition

The number of real estate properties owned as of the balance sheet date.

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