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Real Estate Investments - Narrative (Details) $ in Thousands | 1 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jul. 31, 2022 USD ($) ft² trustee | Jun. 30, 2022 USD ($) ft² jointVenture property state | Jan. 31, 2022 USD ($) investor property | Dec. 31, 2021 USD ($) | Jun. 30, 2022 USD ($) ft² jointVenture property state | Jun. 28, 2022 | Dec. 30, 2021
Real Estate Properties |  |  |  |  |  |  |
Number of properties (property) | property |  | 378 |  |  | 378 |  |
Number of states in which properties are located | state |  | 36 |  |  | 36 |  |
Number of states | state |  |  |  |  | 5 |  |
Subsequent Event | Life Science Building Located In California |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties (property) | trustee | 1 |  |  |  |  |  |
Area of real estate property | ft² | 89,000 |  |  |  |  |  |
Purchase price | $ 82,000 |  |  |  |  |  |
Senior Living Communities | Skilled nursing bed license |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Gain (loss) on sales of beds |  | $ (1,226) | $ 327,542 |  |  |  |
Seaport Innovation LLC |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Aggregate principal amount of mortgage debt |  |  |  | $ 620,000 |  |  |
Real estate property fair value |  | $ 1,700,000 |  |  | $ 1,700,000 |  |
Corporate Joint Venture |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties (property) | property |  | 11 |  |  | 11 |  |
Area of real estate property | ft² |  | 2,203,242 |  |  | 2,203,242 |  |
Aggregate principal amount of mortgage debt |  |  | 456,600 |  |  |  |
Real estate property fair value |  |  | 702,500 |  |  |  |
Corporate Joint Venture | Medical Office Building and Life Science Building |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Proceeds from sale of interest in joint venture, net |  |  | $ 653,300 |  |  |  |
Number of third party institutional investors | investor |  |  | 2 |  |  |  |
Number of properties included in joint venture agreement | property |  |  | 10 |  |  |  |
Corporate Joint Venture | Diversified Healthcare Trusts | Medical Office Building and Life Science Building |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Equity method investment ownership percentage |  |  | 20.00% |  |  |  |
Corporate Joint Venture | Diversified Healthcare Trusts | Unrelated Investor One | Medical Office Building and Life Science Building |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Equity method investment ownership percentage |  |  | 41.00% |  |  |  |
Corporate Joint Venture | Diversified Healthcare Trusts | Unrelated Investor Two | Medical Office Building and Life Science Building |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Equity method investment ownership percentage |  |  | 39.00% |  |  |  |
Corporate Joint Venture | Seaport Innovation LLC |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of properties (property) | property |  | 1 |  |  | 1 |  |
Area of real estate property | ft² |  | 1,134,479 |  |  | 1,134,479 |  |
Additional equity joint venture percentage |  | 10.00% |  | 35.00% |  |  |
Equity method investment ownership percentage |  | 10.00% |  |  | 10.00% | 20.00% | 55.00%
Proceeds from sale of interest in joint venture, net |  | $ 108,000 |  | $ 378,000 |  |  |
Proceeds from sale of other assets |  | $ 108,956 |  |  |  |  |
Corporate Joint Venture | Seaport Innovation LLC | Medical Office Building and Life Science Building |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Equity method investment ownership percentage |  | 10.00% |  |  | 10.00% |  |
Joint Venture |  |  |  |  |  |  |
Real Estate Properties |  |  |  |  |  |  |
Number of unconsolidated joint ventures | jointVenture |  | 2 |  |  | 2 |  |

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