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Pay vs Performance Disclosure - USD ($) | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pay vs Performance Disclosure |  |  |  |  |
Pay vs Performance Disclosure, Table | ​
​ | Pay Versus Performance | ​
​ | Year | ​ | ​ | Summary Compensation Table Total for Principal Executive Officer (“PEO”) | ​ | ​ | Compensation Actually Paid to PEO(1) | ​ | ​ | Summary Compensation Table Total for PEO | ​ | ​ | Compensation Actually Paid to PEO(1) | ​ | ​ | Average Summary Compensation Table Total for Non-PEO NEOs | ​ | ​ | Average Compensation Actually Paid to Non-PEO NEOs(2)(3) | ​ | ​ | Value of Initial Fixed $100 Investment Based on: | ​ | ​ | Net Income (Loss) ($000s) | ​
​ | Total Shareholder Return | ​ | ​ | Peer Group Total Shareholder Return** | ​
​ | ​ | ​ | ​ | Christopher J. Bilotto | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | 2024 | ​ | ​ | ​ | ​ | $341,608 | ​ | ​ | ​ | ​ | ​ | $251,245 | ​ | ​ | ​ | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | — | ​ | ​ | ​ | ​ | ​ | $136,358 | ​ | ​ | ​ | ​ | ​ | $74,782 | ​ | ​ | ​ | ​ | ​ | $31.21 | ​ | ​ | ​ | ​ | ​ | $115.25 | ​ | ​ | ​ | ​ | ​ | $(370,272) | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Jennifer F. Francis | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | 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 | ​ | ​ | 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 | ​
​ | 2024 | ​ | ​ | Christopher J. Bilotto | ​ | ​ | ​ | ​ | $341,608 | ​ | ​ | ​ | ​ | ​ | $(339,997) | ​ | ​ | ​ | ​ | ​ | $137,310 | ​ | ​ | ​ | ​ | ​ | $(25,920) | ​ | ​ | ​ | ​ | ​ | $140,002 | ​ | ​ | ​ | ​ | ​ | $(1,758) | ​ | ​ | ​ | ​ | ​ | $249,634 | ​ | ​ | ​ | ​ | ​ | $251,245 | ​ | ​
​ (2) The only non-PEO NEO for 2024 is Matthew C. Brown. ​ (3) The following table summarizes the applicable deductions and additions for the non-PEO NEO in the calculation of Compensation Actually Paid to the non-PEO NEO. ​
​ | Average Non-PEO NEOs—Compensation Actually Paid | ​
​ | Year | ​ | ​ | Total Compensation Per Summary Compensation Table | ​ | ​ | 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 | ​
​ | 2024 | ​ | ​ | $136,358 | ​ | ​ | $(134,998) | ​ | ​ | $74,147 | ​ | ​ | $(25,920) | ​ | ​ | $27,001 | ​ | ​ | $(1,806) | ​ | ​ | $73,422 | ​ | ​ | $74,782 | ​
Named Executive Officers, Footnote | (2) The only non-PEO NEO for 2024 is Matthew C. Brown. |  |  |  |
Peer Group Issuers, Footnote | ** Peer group total shareholder return is based on the MSCI U.S. REIT/Health Care REIT Index. |  |  |  |
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 | ​ | ​ | 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 | ​
​ | 2024 | ​ | ​ | Christopher J. Bilotto | ​ | ​ | ​ | ​ | $341,608 | ​ | ​ | ​ | ​ | ​ | $(339,997) | ​ | ​ | ​ | ​ | ​ | $137,310 | ​ | ​ | ​ | ​ | ​ | $(25,920) | ​ | ​ | ​ | ​ | ​ | $140,002 | ​ | ​ | ​ | ​ | ​ | $(1,758) | ​ | ​ | ​ | ​ | ​ | $249,634 | ​ | ​ | ​ | ​ | ​ | $251,245 | ​ | ​
Non-PEO NEO Average Total Compensation Amount | $ 136,358 | $ 19,090 | $ 53,845 | $ 103,489 | $ 78,157
Non-PEO NEO Average Compensation Actually Paid Amount | $ 74,782 | 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 the non-PEO NEO in the calculation of Compensation Actually Paid to the non-PEO NEO. ​
​ | Average Non-PEO NEOs—Compensation Actually Paid | ​
​ | Year | ​ | ​ | Total Compensation Per Summary Compensation Table | ​ | ​ | 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 | ​
​ | 2024 | ​ | ​ | $136,358 | ​ | ​ | $(134,998) | ​ | ​ | $74,147 | ​ | ​ | $(25,920) | ​ | ​ | $27,001 | ​ | ​ | $(1,806) | ​ | ​ | $73,422 | ​ | ​ | $74,782 | ​
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 | $ 31.21 | 50.07 | 8.38 | 39.15 | 51.69
Peer Group Total Shareholder Return Amount | 115.25 | 92.56 | 81.72 | 104.54 | 90.08
Net Income (Loss) | $ (370,272,000) | (293,572,000) | (15,774,000) | 179,926,000 | (134,307,000)
PEO Name | Christopher J. Bilotto |  |  |  |
Christopher J. Bilotto [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
PEO Total Compensation Amount | $ 341,608 |  |  |  |
PEO Actually Paid Compensation Amount | 251,245 |  |  |  |
Jennifer F. Francis [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
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
PEO | Equity Awards Adjustments |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 249,634 |  |  |  |
PEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 137,310 |  |  |  |
PEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (25,920) |  |  |  |
PEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 140,002 |  |  |  |
PEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (1,758) |  |  |  |
PEO | Stock Awards [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (339,997) |  |  |  |
Non-PEO NEO | Equity Awards Adjustments |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 73,422 |  |  |  |
Non-PEO NEO | Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 74,147 |  |  |  |
Non-PEO NEO | Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (25,920) |  |  |  |
Non-PEO NEO | Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | 27,001 |  |  |  |
Non-PEO NEO | Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | (1,806) |  |  |  |
Non-PEO NEO | Stock Awards [Member] |  |  |  |  |
Pay vs Performance Disclosure |  |  |  |  |
Adjustment to Compensation, Amount | $ (134,998) |  |  |  |

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