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Real Estate Properties - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2021 USD ($) property state community | Jun. 30, 2020 USD ($) | Jun. 30, 2021 USD ($) property state community | Jun. 30, 2020 USD ($)
Real Estate Properties |  |  |  |
Number of real estate properties | property | 392 |  | 392 |
Number of states in which properties are located | state | 36 |  | 36 |
Impairment of assets | $ | $ 0 | $ (31,175) | $ 174 | $ (42,409)
Life Science Building |  |  |  |
Real Estate Properties |  |  |  |
Number of real estate properties | property | 1 |  | 1 |
Senior Living Communities | Scenario, Adjustment |  |  |  |
Real Estate Properties |  |  |  |
Number of real estate properties | community | 10 |  | 10 |
Impairment of assets | $ |  |  | $ 174 |
Disposal Group, Disposed of by Sale, Not Discontinued Operations |  |  |  |
Real Estate Properties |  |  |  |
Number of real estate properties | property | 5 |  | 5 |
Aggregate sale price | $ |  |  | $ 104,500 |
Joint Venture |  |  |  |
Real Estate Properties |  |  |  |
Ownership percentage | 55.00% |  | 55.00% |

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- Definition This element represents the aggregate sales price excluding closing costs, of real estate properties sold by the entity. + References No definition available. + Details
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Balance Type: | debit
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- Definition Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123351718&loc=d3e2420-110228 + Details
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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 number of real estate properties owned as of the balance sheet date. + References No definition available. + Details
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Balance Type: | na
Period Type: | instant

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- Definition The number of states the entity operates in as of the balance sheet date. + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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- Details
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- Details
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- Details
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- Details
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