v3.26.1
Related Person Transactions (Details)
$ in Thousands
3 Months Ended 6 Months Ended
Jan. 09, 2026
USD ($)
Jul. 15, 2025
USD ($)
Feb. 14, 2025
USD ($)
Jun. 30, 2026
USD ($)
agreement
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
agreement
Jun. 30, 2025
USD ($)
Related person transactions              
Equity method investment distributions           $ 27,200 $ 17,000
Total residents fees and services       $ 365,387 $ 382,712 $ 731,858 769,576
AlerisLife Inc              
Related person transactions              
Equity method investment ownership percentage       34.00%   34.00%  
Equity method investment distributions $ 27,200 $ 3,400 $ 17,000        
Rental income              
Related person transactions              
Total residents fees and services       $ 47,466 55,167 $ 96,712 113,725
RMR LLC | Rental income              
Related person transactions              
Total residents fees and services       $ 65 $ 102 173 $ 209
RMR LLC | Related Party              
Related person transactions              
Related party transaction, closing cost           $ 3,965  
Number of management agreements | agreement       2   2  
ABP Trust | AlerisLife Inc              
Related person transactions              
Equity method investment ownership percentage       66.00%   66.00%  
AlerisLife Inc              
Related person transactions              
Payments of dividends $ 80,000 $ 10,000 $ 50,000        
Diversified Healthcare Trust | ABP Trust And Adam D. Portnoy              
Related person transactions              
Noncontrolling interest, ownership percentage by parent       9.80%   9.80%