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Related Parties - Additional Information (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2023
USD ($)
ft²
Jun. 30, 2022
USD ($)
Jun. 30, 2023
USD ($)
ft²
Jun. 30, 2022
USD ($)
Dec. 31, 2022
USD ($)
ft²
Related Party Transaction [Line Items]          
Fee and other income $ 7,156,000 $ 8,274,000 $ 13,917,000 $ 22,037,000  
Accounts and other receivables 13,692,000   13,692,000   $ 23,866,000
Fee income 4,976,000 5,974,000 9,533,000 17,962,000  
Transaction related costs 63,000 159,000 191,000 276,000  
Accounts payable and accrued expenses $ 113,449,000   $ 113,449,000   123,176,000
Area of leased properties | ft² 13,800,000   13,800,000    
Rental revenue $ 165,506,000 177,243,000 $ 347,219,000 347,165,000  
712 Fifth Avenue [Member]          
Related Party Transaction [Line Items]          
Equity method paramount ownership percentage 50.00%   50.00%    
CNBB-RDF Holdings Otto Family [Member] | Management Agreements [Member]          
Related Party Transaction [Line Items]          
Fee and other income $ 266,000 260,000 $ 529,000 749,000  
Accounts and other receivables 44,000   44,000   52,000
Unconsolidated Joint Ventures and Real Estate Funds [Member] | Management Agreements [Member]          
Related Party Transaction [Line Items]          
Accounts and other receivables 2,111,000   2,111,000   3,032,000
Fee income $ 4,050,000 5,015,000 $ 7,703,000 15,798,000  
Hamburg Trust Consulting GMBH ("HTC") [Member]          
Related Party Transaction [Line Items]          
Mark-up cost percentage 10.00%   10.00%    
Transaction related costs $ 63,000 124,000 $ 191,000 513,000  
Accounts payable and accrued expenses $ 102,000   $ 102,000   $ 119,000
Hamburg Trust Consulting GMBH ("HTC") [Member] | Chairman, Chief Executive Officer and President [Member]          
Related Party Transaction [Line Items]          
Percentage of ownership 100.00%   100.00%    
Mannheim Trust [Member] | Board of Director [Member] | 712 Fifth Avenue [Member]          
Related Party Transaction [Line Items]          
Lease rental income $ 31,000 91,000 $ 124,000 182,000  
Mannheim Trust [Member] | Board of Director [Member] | 712 Fifth Avenue [Member] | Lease expiring in June 2025 [Member]          
Related Party Transaction [Line Items]          
Area of leased properties | ft² 3,127   3,127    
Equity method paramount ownership percentage 50.00%   50.00%    
ParkProperty Capital LP [Member] | Board of Director [Member]          
Related Party Transaction [Line Items]          
Rental revenue $ 69,000 $ 54,000 $ 138,000 $ 108,000  
ParkProperty Capital LP [Member] | Board of Director [Member] | 1633 Broadway [Member]          
Related Party Transaction [Line Items]          
Area of leased properties | ft² 3,330   3,330    
ParkProperty Capital LP [Member] | Board of Director [Member] | 1325 Avenue of the Americas [Member]          
Related Party Transaction [Line Items]          
Area of leased properties | ft²         4,233
Lease term         5 years
Kramer Design Services [Member]          
Related Party Transaction [Line Items]          
Business development costs incurred $ 84,000   $ 84,000    
Kramer Design Services [Member] | Chairman, Chief Executive Officer and President [Member]          
Related Party Transaction [Line Items]          
Percentage of ownership 100.00%   100.00%