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Related Person Transactions (Details) | Sep. 30, 2022 agreement property hotel travelCenter | Jan. 01, 2022 hotel | Dec. 31, 2021
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Sonesta Int'l Hotels Corp |  |  |
Related Party Transaction [Line Items] |  |  |
Noncontrolling interest, ownership percentage | 34.00% |  |
RMR LLC | Travel Centers of America |  |  |
Related Party Transaction [Line Items] |  |  |
Noncontrolling interest, ownership percentage | 4.50% |  |
Net Lease |  |  |
Related Party Transaction [Line Items] |  |  |
Number of properties owned | property | 769 |  |
Net Lease | TravelCenters of America Inc. |  |  |
Related Party Transaction [Line Items] |  |  |
Number of properties owned | travelCenter | 179 |  |
Travel Centers of America |  |  |
Related Party Transaction [Line Items] |  |  |
Percentage of total shares outstanding | 8.00% |  | 8.00%
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 | Hotels |  |  |
Related Party Transaction [Line Items] |  |  |
Number of properties owned | hotel | 200 | 261 |

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