v3.26.3
Transactions with Curbline Properties - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Fee and other income $ 4,091 $ 2,897 $ 11,712 $ 16,878  
Rental income 4,471 24,203 20,559 86,315  
Below-market lease 1,076   $ 1,076   $ 4,670
Fee percentage of aggregate amount of gross revenue     2.00%    
Amounts payable to curbline 6,500   $ 6,500   22,100
Amounts receivable from curbline 500   500   $ 900
Shared Services Agreement [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Fee and other income 1,800 800 5,300 2,000  
Rental income 400 400 1,200 1,200  
Below-market lease $ 1,200   1,200    
Annual rent expense     $ 200    
Lessee, term of contract 5 years   5 years    
Lessee, renewal term 5 years   5 years    
Below market lease, period increase (decrease)     $ (300)    
Other [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Fee and other income $ 1,400 900 3,700 2,400  
Separation and Distributions Agreement [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Estimated cost of redevelopment projects 6,100   6,100    
Curbline [Member]          
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]          
Below-market lease 900   900    
Incremental fair value of services provided to Curbline 1,800 800 5,300 2,000  
Embedded lease charge $ 400 $ 400 $ 1,200 $ 1,200