v3.26.3
Nature of Business and Financial Statement Presentation - Additional Information (Detail)
$ in Thousands
 1 Months Ended 3 Months Ended 9 Months Ended
Jan. 31, 2026
USD ($)
Sep. 30, 2026
USD ($)
ft²
Property
ShoppingCenter
Sep. 30, 2025
USD ($)
ShoppingCenter
Sep. 30, 2026
USD ($)
ft²
Segment
Property
ShoppingCenter
Sep. 30, 2025
USD ($)
ShoppingCenter
Summary Of Significant Accounting Policies [Line Items]          
Retail properties | Property   12   12  
Gross leasable area (GLA) | ft²   3,700,000   3,700,000  
Gross proceeds from sale of real estate assets   $ 1,900 $ 108,200 $ 12,400 $ 159,700
Gain on other investment $ 20,000        
Revenues   $ 8,562 $ 27,100 $ 32,271 $ 103,193
Payments to acquire limited partnership interests $ 20,800        
Number of shopping centers sold | ShoppingCenter   2 4 6 6
Number of operating segments | Segment       1  
Quantitative threshold of revenues, profit or loss and assets for identifying reportable segments       The Company has a single operating segment. The Company’s shopping centers have common characteristics and are managed on a consolidated basis. The Company does not differentiate among properties on a geographical basis or any other basis for purposes of allocating resources or capital. The Company’s Chief Operating Decision Maker (“CODM”) may review operational and financial data on an ad-hoc basis at a property level. The CODM assesses performance for the segment and decides how to allocate resources based on net income as reported on the Company’s consolidated statements of operations. In addition, the CODM uses net operating income (“NOI”) as a supplemental measure to evaluate and assess the performance of the Company’s operating portfolio. NOI is defined as property revenues less property-related expenses and excludes depreciation and amortization expense, joint venture equity and fee income, interest income and expenses and corporate level transactions. The CODM uses net income and NOI to monitor budget versus actual results in assessing the performance of the Company’s properties to guide decisions regarding timing of property sales and payment of dividends. The CODM reviews significant expenses associated with the Company’s single reportable operating segment which are presented in the Company’s consolidated statements of operations. The measure of segment assets is reported in the Company’s consolidated balance sheets as total consolidated assets.  
Dividend Trust Portfolio [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Number of shopping centers | ShoppingCenter       10  
Disposition [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Gross sales price of real estate assets   $ 19,900 $ 277,200 $ 155,400 $ 372,500
Other Property [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Revenues         $ 8,400
Office Building [Member]          
Summary Of Significant Accounting Policies [Line Items]          
Retail properties | Property   2   2  
Gross leasable area (GLA) | ft²   217,000   217,000  
Office Building [Member] | Beachwood, Ohio          
Summary Of Significant Accounting Policies [Line Items]          
Gross leasable area (GLA) | ft²   339,000   339,000