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Real Estate Transactions - Life Science JV Interest Purchase (Details) $ in Thousands | 1 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 USD ($) property | Nov. 30, 2018 USD ($) property joint_venture | Jun. 30, 2019 USD ($) | Jun. 30, 2018 USD ($)
Real Estate [Line Items] |  |  |  |
Payments to acquire real estate |  |  |  | $ 21,000
Gain (loss) on consolidation |  | $ 50,000 | $ 11,501 | $ (41,017)
Life science joint ventures |  |  |  |
Real Estate [Line Items] |  |  |  |
Number of joint ventures (in joint ventures) | joint_venture |  | 3 |  |
Number of properties acquired (in properties) | property | 2 | 4 |  |
Payments to acquire real estate | $ 245,000 | $ 92,000 |  |
Investment ownership percentage |  | 100.00% |  |

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571 + Details
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- Definition The cash outflow from the acquisition of a piece of land, anything permanently fixed to it, including buildings, structures on it and so forth; includes real estate intended to generate income for the owner; excludes real estate acquired for use by the owner. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585 + Details
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