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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure |  |  |  |
Pay vs Performance Disclosure, Table | Pay Versus Performance ​ The following table and footnotes summarize the total compensation we paid to our Named Executive Officers (our “NEOs”), compensation “actually paid” to the NEOs (calculated in accordance with SEC rules), the cumulative total shareholder return of the Company, the peer group total shareholder return and our net income for the past four fiscal years. We do not use any financial performance measures to link compensation actually paid to our NEOs by us to the Company’s performance. Accordingly, pursuant to the SEC rules, we have not included a “company selected measure” or the tabular list of performance measures. Please see “Compensation Discussion and Analysis—Compensation Overview” above for an explanation of why we pay our NEOs no cash compensation. For information regarding the compensation paid by RMR and RMR Inc. to our NEOs, please see the above “RMR and RMR Inc. Compensation Practices section.
​ | Pay Versus Performance | ​
​ | Year | ​ | ​ | Summary Compensation Table Total for Principal Executive Officer (“PEO”) | ​ | ​ | Compensation Actually Paid to PEO(1) | ​ | ​ | Average Summary Compensation Table Total for Non-PEO NEOs | ​ | ​ | Average Compensation Actually Paid to Non-PEOs NEOs(2)(3) | ​ | ​ | Value of Initial Fixed $100 Investment Based on: | ​ | ​ | Net Income (Loss) ($000s) | ​
​ | Total Shareholder Return | ​ | ​ | Peer Group Total Shareholder Return** | ​
​ | 2023 | ​ | ​ | ​ | ​ | $178,710 | ​ | ​ | ​ | ​ | ​ | $508,007 | ​ | ​ | ​ | ​ | ​ | $19,090 | ​ | ​ | ​ | ​ | ​ | $139,720 | ​ | ​ | ​ | ​ | ​ | $50.07 | ​ | ​ | ​ | ​ | ​ | $92.56 | ​ | ​ | ​ | ​ | ​ | $(293,572) | ​ | ​
​ | 2022 | ​ | ​ | ​ | ​ | 123,995 | ​ | ​ | ​ | ​ | ​ | (75,701)* | ​ | ​ | ​ | ​ | ​ | 53,845 | ​ | ​ | ​ | ​ | ​ | (61,296)* | ​ | ​ | ​ | ​ | ​ | 8.38 | ​ | ​ | ​ | ​ | ​ | 81.72 | ​ | ​ | ​ | ​ | ​ | (15,774) | ​ | ​
​ | 2021 | ​ | ​ | ​ | ​ | 280,424 | ​ | ​ | ​ | ​ | ​ | 231,125 | ​ | ​ | ​ | ​ | ​ | 103,489 | ​ | ​ | ​ | ​ | ​ | 71,960 | ​ | ​ | ​ | ​ | ​ | 39.15 | ​ | ​ | ​ | ​ | ​ | 104.54 | ​ | ​ | ​ | ​ | ​ | 179,926 | ​ | ​
​ | 2020 | ​ | ​ | ​ | ​ | 116,421 | ​ | ​ | ​ | ​ | ​ | 58,298 | ​ | ​ | ​ | ​ | ​ | 78,157 | ​ | ​ | ​ | ​ | ​ | 27,432 | ​ | ​ | ​ | ​ | ​ | 51.69 | ​ | ​ | ​ | ​ | ​ | 90.08 | ​ | ​ | ​ | ​ | ​ | (134,307) | ​ | ​
​ * Because the Company does not pay cash compensation to its NEOs, the total compensation from the summary compensation table does not include cash compensation received by our NEOs. The negative values for Compensation Actually Paid in 2022 reflect the decline in value of the share awards granted by us to our NEOs. ​ ** Peer group total shareholder return is based on the MSCI U.S. REIT/ Health Care REIT Index. ​ (1) The following table summarizes the applicable deductions and additions for the PEO in the calculation of Compensation Actually Paid to the PEO. ​
​ | PEO Compensation Actually Paid | ​
​ | Year | ​ | ​ | PEO Name | ​ | ​ | Total Compensation Per Summary Compensation Table Less Stock Grant Amount | ​ | ​ | Year End Fair Value of Equity Awards Granted and Unvested During Applicable Year | ​ | ​ | Change in Fair Value as of Year End of Any Prior Year Awards that Remain Unvested as of Year End | ​ | ​ | Awards Granted and Vested in the Same Year, at Fair Value as of the Vesting Date | ​ | ​ | Change in Fair Value as of Year End of Any Prior Year Awards that Vested During Applicable Year | ​ | ​ | Total Equity Value Reflected in Compensation Actually Paid | ​ | ​ | Compensation Actually Paid to PEO | ​
​ | 2023 | ​ | ​ | Jennifer F. Francis | ​ | ​ | ​ | ​ | $4,110 | ​ | ​ | ​ | ​ | ​ | $179,520 | ​ | ​ | ​ | ​ | ​ | $204,151 | ​ | ​ | ​ | ​ | ​ | $62,760 | ​ | ​ | ​ | ​ | ​ | $57,466 | ​ | ​ | ​ | ​ | ​ | $503,897 | ​ | ​ | ​ | ​ | ​ | $508,007 | ​ | ​
​ (2) The only non-PEO NEOs for 2023 are Richard W. Siedel and Matthew C. Brown. ​ (3) The following table summarizes the applicable deductions and additions for each of the non-PEO NEOs in the calculation of Compensation Actually Paid to each non-PEO NEO. ​
​ | Average Non-PEO NEOs—Compensation Actually Paid | ​
​ | Year | ​ | ​ | Total Compensation Per Summary Compensation Table Less Stock Grant Amount | ​ | ​ | Year End Fair Value of Equity Awards Granted and Unvested During Applicable Year | ​ | ​ | Change in Fair Value as of Year End of Any Prior Year Awards that Remain Unvested as of Year End | ​ | ​ | Awards Granted and Vested in the Same Year, at Fair Value as of the Vesting Date | ​ | ​ | Change in Fair Value as of Year End of Any Prior Year Awards that Vested During Applicable Year | ​ | ​ | Total Equity Value Reflected in Compensation Actually Paid | ​ | ​ | Compensation Actually Paid to Non-PEO NEOs | ​
​ | 2023 | ​ | ​ | $1,615 | ​ | ​ | $22,440 | ​ | ​ | $87,538 | ​ | ​ | $3,495 | ​ | ​ | $24,632 | ​ | ​ | $138,105 | ​ | ​ | $139,720 | ​
Named Executive Officers, Footnote | (1) The following table summarizes the applicable deductions and additions for the PEO in the calculation of Compensation Actually Paid to the PEO. ​
​ | PEO Compensation Actually Paid | ​
​ | Year | ​ | ​ | PEO Name | ​ | ​ | Total Compensation Per Summary Compensation Table Less Stock Grant Amount | ​ | ​ | Year End Fair Value of Equity Awards Granted and Unvested During Applicable Year | ​ | ​ | Change in Fair Value as of Year End of Any Prior Year Awards that Remain Unvested as of Year End | ​ | ​ | Awards Granted and Vested in the Same Year, at Fair Value as of the Vesting Date | ​ | ​ | Change in Fair Value as of Year End of Any Prior Year Awards that Vested During Applicable Year | ​ | ​ | Total Equity Value Reflected in Compensation Actually Paid | ​ | ​ | Compensation Actually Paid to PEO | ​
​ | 2023 | ​ | ​ | Jennifer F. Francis | ​ | ​ | ​ | ​ | $4,110 | ​ | ​ | ​ | ​ | ​ | $179,520 | ​ | ​ | ​ | ​ | ​ | $204,151 | ​ | ​ | ​ | ​ | ​ | $62,760 | ​ | ​ | ​ | ​ | ​ | $57,466 | ​ | ​ | ​ | ​ | ​ | $503,897 | ​ | ​ | ​ | ​ | ​ | $508,007 | ​ | ​
​ (2) The only non-PEO NEOs for 2023 are Richard W. Siedel and Matthew C. Brown. ​ |  |  |
Peer Group Issuers, Footnote | ** Peer group total shareholder return is based on the MSCI U.S. REIT/ Health Care REIT Index. |  |  |
PEO Total Compensation Amount | $ 178,710 | $ 123,995 | $ 280,424 | $ 116,421
PEO Actually Paid Compensation Amount | $ 508,007 | (75,701) | 231,125 | 58,298
Adjustment To PEO Compensation, Footnote | (1) The following table summarizes the applicable deductions and additions for the PEO in the calculation of Compensation Actually Paid to the PEO. ​
​ | PEO Compensation Actually Paid | ​
​ | Year | ​ | ​ | PEO Name | ​ | ​ | Total Compensation Per Summary Compensation Table Less Stock Grant Amount | ​ | ​ | Year End Fair Value of Equity Awards Granted and Unvested During Applicable Year | ​ | ​ | Change in Fair Value as of Year End of Any Prior Year Awards that Remain Unvested as of Year End | ​ | ​ | Awards Granted and Vested in the Same Year, at Fair Value as of the Vesting Date | ​ | ​ | Change in Fair Value as of Year End of Any Prior Year Awards that Vested During Applicable Year | ​ | ​ | Total Equity Value Reflected in Compensation Actually Paid | ​ | ​ | Compensation Actually Paid to PEO | ​
​ | 2023 | ​ | ​ | Jennifer F. Francis | ​ | ​ | ​ | ​ | $4,110 | ​ | ​ | ​ | ​ | ​ | $179,520 | ​ | ​ | ​ | ​ | ​ | $204,151 | ​ | ​ | ​ | ​ | ​ | $62,760 | ​ | ​ | ​ | ​ | ​ | $57,466 | ​ | ​ | ​ | ​ | ​ | $503,897 | ​ | ​ | ​ | ​ | ​ | $508,007 | ​ | ​
Non-PEO NEO Average Total Compensation Amount | $ 19,090 | 53,845 | 103,489 | 78,157
Non-PEO NEO Average Compensation Actually Paid Amount | $ 139,720 | (61,296) | 71,960 | 27,432
Adjustment to Non-PEO NEO Compensation Footnote | (3) The following table summarizes the applicable deductions and additions for each of the non-PEO NEOs in the calculation of Compensation Actually Paid to each non-PEO NEO. ​
​ | Average Non-PEO NEOs—Compensation Actually Paid | ​
​ | Year | ​ | ​ | Total Compensation Per Summary Compensation Table Less Stock Grant Amount | ​ | ​ | Year End Fair Value of Equity Awards Granted and Unvested During Applicable Year | ​ | ​ | Change in Fair Value as of Year End of Any Prior Year Awards that Remain Unvested as of Year End | ​ | ​ | Awards Granted and Vested in the Same Year, at Fair Value as of the Vesting Date | ​ | ​ | Change in Fair Value as of Year End of Any Prior Year Awards that Vested During Applicable Year | ​ | ​ | Total Equity Value Reflected in Compensation Actually Paid | ​ | ​ | Compensation Actually Paid to Non-PEO NEOs | ​
​ | 2023 | ​ | ​ | $1,615 | ​ | ​ | $22,440 | ​ | ​ | $87,538 | ​ | ​ | $3,495 | ​ | ​ | $24,632 | ​ | ​ | $138,105 | ​ | ​ | $139,720 | ​
Compensation Actually Paid vs. Total Shareholder Return |  |  |  |
Compensation Actually Paid vs. Net Income | * Because the Company does not pay cash compensation to its NEOs, the total compensation from the summary compensation table does not include cash compensation received by our NEOs. The negative values for Compensation Actually Paid in 2022 reflect the decline in value of the share awards granted by us to our NEOs. |  |  |
Total Shareholder Return Vs Peer Group |  |  |  |
Total Shareholder Return Amount | $ 50.07 | 8.38 | 39.15 | 51.69
Peer Group Total Shareholder Return Amount | 92.56 | 81.72 | 104.54 | 90.08
Net Income (Loss) | $ (293,572,000) | $ (15,774,000) | $ 179,926,000 | $ (134,307,000)
PEO Name | Jennifer F. Francis |  |  |
PEO | Equity Awards Value In Summary Compensation Table (Grant Date Value) |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ (174,600) |  |  |
PEO | Total Compensation Per Summary Compensation Table Less Stock Grant Amount [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 4,110 |  |  |
PEO | Total Equity Awards Adjustments [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 503,897 |  |  |
PEO | Year-end Fair Value Of Awards Granted In The Current Fiscal Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 179,520 |  |  |
PEO | Change In Fair Value Of Outstanding And Unvested Awards Granted In Prior Fiscal Years [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 204,151 |  |  |
PEO | Change In Fair Value As Of Vesting Date Of Current Year Awards Vested During Current Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 62,760 |  |  |
PEO | Change In Fair Value As Of Vesting Date Of Prior Year Awards Vested During Current Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 57,466 |  |  |
Non-PEO NEO | Equity Awards Value In Summary Compensation Table (Grant Date Value) |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | (17,475) |  |  |
Non-PEO NEO | Total Compensation Per Summary Compensation Table Less Stock Grant Amount [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 1,615 |  |  |
Non-PEO NEO | Total Equity Awards Adjustments [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 138,105 |  |  |
Non-PEO NEO | Year-end Fair Value Of Awards Granted In The Current Fiscal Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 22,440 |  |  |
Non-PEO NEO | Change In Fair Value Of Outstanding And Unvested Awards Granted In Prior Fiscal Years [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 87,538 |  |  |
Non-PEO NEO | Change In Fair Value As Of Vesting Date Of Current Year Awards Vested During Current Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | 3,495 |  |  |
Non-PEO NEO | Change In Fair Value As Of Vesting Date Of Prior Year Awards Vested During Current Year [Member] |  |  |  |
Pay vs Performance Disclosure |  |  |  |
Adjustment to Compensation, Amount | $ 24,632 |  |  |

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