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v3.24.0.1

Related Person Transactions (Details) $ / shares in Units, $ in Thousands |  | 12 Months Ended |  |
--- | --- | --- | --- | ---
Feb. 16, 2024 USD ($) | Dec. 31, 2023 USD ($) agreement | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Mar. 20, 2023 | Feb. 28, 2023 $ / shares
Related Party Transaction |  |  |  |  |  |
Revenue |  | $ 1,410,308 | $ 1,283,566 | $ 1,383,212 |  |
Rental income |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Revenue |  | $ 258,400 | 260,740 | 408,589 |  |
RMR LLC |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Number of management agreements with related party | agreement |  | 2 |  |  |  |
RMR LLC | Rental income |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Revenue |  | $ 196 | 303 | $ 190 |  |
AlerisLife Inc |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Investment in equity securities acquisition, share price (in dollars per share) | $ / shares |  |  |  |  |  | $ 1.31
AlerisLife Inc | Subsequent Event |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Step acquisition, ownership percentage including subsequent acquisition | 34.00% |  |  |  |  |
Purchase price | $ 14,890 |  |  |  |  |
Related Party | OPI | Termination of Merger Agreement |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Amounts of transaction |  | $ 9,900 |  |  |  |
Related Party | RMR LLC |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Related party transaction, closing cost |  |  | $ 6,080 |  |  |
Related Party | AlerisLife Inc |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Investment in equity securities acquisition, share price (in dollars per share) | $ / shares |  |  |  |  |  | $ 1.31
RMR LLC | Year one |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Award vesting rights, percentage |  | 20.00% |  |  |  |
RMR LLC | Year two |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Award vesting rights, percentage |  | 20.00% |  |  |  |
RMR LLC | Year three |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Award vesting rights, percentage |  | 20.00% |  |  |  |
RMR LLC | Year four |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Award vesting rights, percentage |  | 20.00% |  |  |  |
RMR LLC | Year five |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Award vesting rights, percentage |  | 20.00% |  |  |  |
Diversified Healthcare Trusts | ABP Trust and Adam D. Portnoy |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Ownership interest by noncontrolling owners |  | 9.80% |  |  |  |
AlerisLife Inc | Related Party |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Ownership interest by noncontrolling owners |  |  |  |  | 31.90% |
AlerisLife Inc | ABP Acquisition LLC And ABP Trust |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Ownership interest by noncontrolling owners |  |  |  |  | 6.10% |
AlerisLife Inc | ABP Trust | Subsequent Event |  |  |  |  |  |
Related Party Transaction |  |  |  |  |  |
Ownership interest by parent | 66.00% |  |  |  |  |

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