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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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- 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 + Details
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