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Related Person Transactions (Details) | Jun. 30, 2024 agreement hotel shares | Dec. 31, 2023
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Hotel |  |
Related Party Transaction [Line Items] |  |
Number of properties owned | 220 |
RMR LLC |  |
Related Party Transaction [Line Items] |  |
Percentage of total shares outstanding (in percent) | 4.40% |
Travel Centers of America | RMR LLC |  |
Related Party Transaction [Line Items] |  |
Number of common shares owned (in shares) | shares | 661,506 |
Sonesta Int'l Hotels Corp |  |
Related Party Transaction [Line Items] |  |
Noncontrolling interest, ownership percentage (in percent) | 34.00% | 34.00%
RMR LLC | Amended And Restate Business Management Agreement |  |
Related Party Transaction [Line Items] |  |
Number of management service agreements | agreement | 2 |
Sonesta Int'l Hotels Corp | Related Party | Hotel |  |
Related Party Transaction [Line Items] |  |
Number of properties owned | 195 |

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