v3.26.1
Related Person Transactions (Details)
$ in Thousands
 1 Months Ended 6 Months Ended 12 Months Ended
Jan. 01, 2025
USD ($)
renewalOption
year
Apr. 30, 2025
USD ($)
Jun. 30, 2025
Dec. 31, 2025
USD ($)
Dec. 31, 2024
USD ($)
ft²
Related Party Transaction [Line Items]          
Other operating expenses       $ 121,456 $ 107,400
Straight line rent receivables       151,525 140,132
Other assets, net       $ 30,951 11,594
Officers and Other Employees | 2009 Award Plan | Common Shares          
Related Party Transaction [Line Items]          
Award vesting period       4 years  
Officers and Other Employees | 2009 Award Plan | Common Shares | Share-based Payment Arrangement, Tranche 1          
Related Party Transaction [Line Items]          
Award vesting rights, percentage       20.00%  
Officers and Other Employees | 2009 Award Plan | Common Shares | Share-based Payment Arrangement, Tranche 2          
Related Party Transaction [Line Items]          
Award vesting rights, percentage       20.00%  
Officers and Other Employees | 2009 Award Plan | Common Shares | Share-based Payment Arrangement, Tranche 3          
Related Party Transaction [Line Items]          
Award vesting rights, percentage       20.00%  
Officers and Other Employees | 2009 Award Plan | Common Shares | Share-based Payment Arrangement, Tranche 4          
Related Party Transaction [Line Items]          
Award vesting rights, percentage       20.00%  
Officers and Other Employees | 2009 Award Plan | Common Shares | Share-based Payment Arrangement, Tranche 5          
Related Party Transaction [Line Items]          
Award vesting rights, percentage       20.00%  
Sonesta International Hotels Corporation | Management Agreement Realized Return          
Related Party Transaction [Line Items]          
Transaction amount       $ 4,496  
Related Party          
Related Party Transaction [Line Items]          
Rents receivable       164,114 155,668
Related Party | RMR LLC          
Related Party Transaction [Line Items]          
Rental income       816 807
Related Party | Sonesta International Hotels Corporation          
Related Party Transaction [Line Items]          
Rental income         $ 12,428
Rentable Square Feet (in square feet) | ft²         240,000
Additional area of real estate property (in square feet) | ft²         5,900
Annual base rent         $ 6,724
Annual percentage increase     10.00%    
Annual base rent increase     5 years    
Tenant improvements         76,834
Number of renewal options | renewalOption 2        
Renewal term 10 years        
Transaction amount $ 7,500        
Priority return increase percentage of out-of-pocket capital expenditures 8.00%        
Priority return percentage of prior year's annual owner's priority return 102.00%        
Rents receivable       231  
Incentive fee, percent of net operating profit 20.00%        
Loyalty fee, percent of room revenues 1.00%        
Loyalty fee, percent of qualified room revenues 4.50%        
Straight line rent receivables         $ 12,343
Other assets, net       11,911  
Performance years termination threshold | year 2        
Related Party | Sonesta International Hotels Corporation | Management, Brand Promotion And Loyalty Fees          
Related Party Transaction [Line Items]          
Rental income       29,644  
Other operating expenses       837  
Related Party | Sonesta International Hotels Corporation | Sonesta Management Agreement, Period One          
Related Party Transaction [Line Items]          
Required escrow deposit, percent of gross revenues 1.00%        
Base management fee, percent of gross revenues 1.50%        
Brand promotion fee, percent of gross revenues 1.75%        
Related Party | Sonesta International Hotels Corporation | Sonesta Management Agreement, Period Two          
Related Party Transaction [Line Items]          
Required escrow deposit, percent of gross revenues 3.00%        
Base management fee, percent of gross revenues 3.00%        
Brand promotion fee, percent of gross revenues 3.50%        
Related Party | Sonesta International Hotels Corporation | Sonesta Management Agreement, Period Three          
Related Party Transaction [Line Items]          
Required escrow deposit, percent of gross revenues 4.00%        
Escrow deposits required       296  
Related Party | Sonesta International Hotels Corporation | Working Capital          
Related Party Transaction [Line Items]          
Other operating expenses   $ 548      
Related Party | Sonesta International Hotels Corporation | Asset Management Amortization          
Related Party Transaction [Line Items]          
Other operating expenses       $ 432