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Senior Living Community Management Agreements - Narrative (Details) $ in Thousands |  |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Nov. 01, 2022 USD ($) | Jun. 09, 2021 USD ($) community unit | Jan. 31, 2021 USD ($) | Dec. 31, 2022 USD ($) property trustee option community unit shares | Dec. 31, 2021 USD ($) community property unit shares | Dec. 31, 2020 USD ($) property community | Jan. 01, 2020 shares
Concentration Risk |  |  |  |  |  |  |
Common shares, shares issued (in shares) | shares |  |  |  | 239,694,842 | 238,994,894 |  |
Gain on lease termination |  |  |  | $ 0 | $ 0 | $ 22,896 |
Number of properties owned (property) | property |  |  |  | 379 |  |  |
Management agreement, term |  |  |  | 5 years |  |  |
Management agreement, extension term |  |  |  | 2 years |  |  |
Management fees payable to third parties |  |  |  | $ 20,739 | $ 6,239 |  |
AlerisLife Inc |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Common shares, shares issued (in shares) | shares |  |  |  |  |  |  | 10,268,158
Aggregate shares issued (shares) | shares |  |  |  |  |  |  | 16,118,849
Senior Living Communities |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Number of properties owned (property) | property |  |  |  |  |  | 28 |
Number of units in real estate property | unit |  |  |  | 27,408 |  |  |
Number of communities managed | community |  |  |  | 111 | 107 |  |
Senior Living Communities | Minimum |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Management fees as a percentage of gross revenues |  |  |  | 5.00% |  |  |
Percentage of annual incentive fee |  |  |  | 15.00% |  |  |
Construction supervision fee |  |  |  | 3.00% |  |  |
Property management agreement, management fees |  |  |  | 70.00% |  |  |
Senior Living Communities | Maximum |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Management fees as a percentage of gross revenues |  |  |  | 6.00% |  |  |
Percentage of annual incentive fee |  |  |  | 25.00% |  |  |
Construction supervision fee |  |  |  | 5.00% |  |  |
Property management agreement, management fees |  |  |  | 80.00% |  |  |
Affiliated Entity | Five Star |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Amounts of transaction |  |  |  |  |  | $ 75,000 |
Gain on lease termination |  |  |  |  |  | 22,896 |
Management fees as a percentage of gross revenues |  |  |  | 5.00% |  |  |
Percentage of annual incentive fee |  |  |  | 15.00% |  |  |
Consumer price index annual estimated increase |  |  |  | 2.00% |  |  |
Trigger basis for capital investment ratio (percent) |  |  |  | 6.00% |  |  |
Business and property management agreement, number of agreements | option |  |  |  | 2 |  |  |
Renewal term (years) |  |  |  | 5 years |  |  |
Expenses from property management agreement transactions with related party |  |  |  | $ 37,037 | $ 47,479 | 62,880 |
Related party transaction capitalized amount |  |  |  | 3,300 | 3,615 | 2,467 |
Payments made in exchange for customary release |  |  | $ 5,763 |  |  |  |
Refunded management fees |  |  | $ 115 |  |  |  |
Affiliated Entity | Five Star | Property Operating Expense |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Expenses from property management agreement transactions with related party |  |  |  | $ 33,737 | $ 43,864 | $ 60,413 |
Affiliated Entity | Five Star | Senior Living Communities |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Number of communities managed | community |  |  |  | 119 | 120 | 235 |
Expenses from transactions with related party |  |  |  | $ 6,289 | $ 11,233 | $ 25,687 |
Number of real estate properties inadequate documentation | trustee |  |  |  | 1 |  |  |
Five Star | Senior Living Communities |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Number of properties owned (property) | community |  | 120 |  |  |  |  |
Number of real estate properties managed | community |  | 119 |  |  |  |  |
Related party transactions, termination percentage |  | 10.00% |  |  |  |  |
Percentage of EBITDA threshold for contract termination |  | 80.00% |  |  |  |  |
Five Star Management |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Termination fees paid | $ 350 |  |  |  |  |  |
Disposal Group, Held-for-sale, Not Discontinued Operations | Senior Living Communities |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Number of properties owned (property) | property |  |  |  |  |  | 10 |
Disposal Group, Held-for-sale, Not Discontinued Operations | Five Star | Senior Living Communities |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Amounts of transaction |  | $ 682,000 |  |  |  |  |
Number of properties owned (property) | community |  | 108 |  |  | 108 |  |
Number of units in real estate property | unit |  | 1,500 |  |  |  |  |
Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations | Five Star | Senior Living Communities |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Amounts of transaction |  |  |  | $ 2,096 | $ 17,363 |  |
Number of units in real estate property | unit |  |  |  |  | 7,340 |  |
Number of properties transitioned | community |  |  |  |  | 107 |  |
Scenario, Adjustment | Senior Living Communities |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Number of properties owned (property) | property |  |  |  |  | 10 |  |
Scenario, Adjustment | Disposal Group, Held-for-sale, Not Discontinued Operations | Five Star | Senior Living Communities |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Number of units in real estate property | unit |  | 7,500 |  |  |  |  |
Residents fees and services | SHOP | Affiliated Entity | Five Star |  |  |  |  |  |  |
Concentration Risk |  |  |  |  |  |  |
Revenue reserve for inadequate documentation |  |  |  |  |  | $ 3,842 |
Penalties for inadequate documentation |  |  |  |  |  | $ 1,921 |

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