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Organization and Business - Additional Information (Details)
$ / shares in Units, ft² in Millions
9 Months Ended
Oct. 08, 2025
USD ($)
Sep. 17, 2025
USD ($)
$ / shares
Sep. 30, 2025
ft²
Properties
$ / shares
Dec. 31, 2024
$ / shares
Real Estate Properties [Line Items]        
Number of Real Estate Properties | Properties     17  
Area of office and retail properties     13.1  
Operating Partnership merger consideration per share | $ / shares   $ 6.6    
Common stock, par value | $ / shares   0.01 $ 0.01 $ 0.01
Company merger consideration per share | $ / shares   $ 6.6    
Merger agreement termination payment | $   $ 59,700,000    
Subsequent Event [Member]        
Real Estate Properties [Line Items]        
Merger agreement termination payment | $ $ 47,700,000      
New York [Member]        
Real Estate Properties [Line Items]        
Number of Real Estate Properties | Properties     8  
Area of office and retail properties     8.7  
New York [Member] | Office Space [Member]        
Real Estate Properties [Line Items]        
Area of office and retail properties     8.2  
New York [Member] | Retail, Theater and Amenity Space [Member]        
Real Estate Properties [Line Items]        
Area of office and retail properties     0.5  
San Francisco [Member]        
Real Estate Properties [Line Items]        
Number of Real Estate Properties | Properties     5  
Area of office and retail properties     3.6  
San Francisco [Member] | Office Space [Member]        
Real Estate Properties [Line Items]        
Area of office and retail properties     3.4  
San Francisco [Member] | Retail Space [Member]        
Real Estate Properties [Line Items]        
Area of office and retail properties     0.2  
New York And Washington, D.C [Member]        
Real Estate Properties [Line Items]        
Number of real estate properties managed | Properties     4  
Area of office and retail properties     0.8  
Variable Interest Entities [Member] | Paramount Group Operating Partnership [Member]        
Real Estate Properties [Line Items]        
Percentage of ownership in operating partnership     93.20%