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Shareholders' Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  |  |  | 9 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | ---
Oct. 26, 2020 | Aug. 20, 2020 | May 21, 2020 | Feb. 20, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Jan. 01, 2020 | Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Distributions to shareholders |  | $ 2,380 | $ 2,379 | $ 35,684 | $ 40,443 | $ 164,034 |  |
Common shares issued (in shares) |  |  |  |  | 238,268,478 |  |  | 237,897,163
Common shares value |  |  |  |  | $ 2,383 |  |  | $ 2,379
Subsequent Event |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Distributions to common shareholders declared (in dollars per share) | $ 0.01 |  |  |  |  |  |  |
Distributions to shareholders | $ 2,382 |  |  |  |  |  |  |
Five Star |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Common shares issued (in shares) |  |  |  |  |  |  | 10,268,158 | 10,268,158
Shareholders | Five Star |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |
Common shares issued (in shares) |  |  |  |  |  |  | 16,118,849 | 16,118,849
Common shares value |  |  |  |  |  |  | $ 59,801 |

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