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INVESTMENT IN UNCONSOLIDATED ENTITIES - Narrative (Details)
 1 Months Ended 3 Months Ended 9 Months Ended
Oct. 31, 2023
USD ($)
ft²
Feb. 28, 2023
USD ($)
ft²
unit
investor
Feb. 28, 2022
USD ($)
Sep. 30, 2025
USD ($)
ft²
unit
Sep. 30, 2024
USD ($)
unit
Sep. 30, 2025
USD ($)
ft²
unit
Sep. 30, 2024
USD ($)
unit
Dec. 31, 2024
USD ($)
Oct. 31, 2024
Sep. 30, 2022
USD ($)
Schedule of Equity Method Investments [Line Items]                    
Outstanding balance       $ 533,855,000   $ 533,855,000        
Work in progress       23,198,000   23,198,000   $ 36,929,000    
Loss from unconsolidated entities       $ 697,000 $ 1,239,000 $ 2,285,000 $ 442,000      
1910 Sunset Boulevard                    
Schedule of Equity Method Investments [Line Items]                    
Ownership Interest       44.20%   44.20%        
1910 Sunset Boulevard | Multifamily                    
Schedule of Equity Method Investments [Line Items]                    
Number of real estate property units | unit       36   36        
1910 Sunset Boulevard | Office Building                    
Schedule of Equity Method Investments [Line Items]                    
Square feet | ft²       105,064   105,064        
4750 Wilshire Boulevard                    
Schedule of Equity Method Investments [Line Items]                    
Percentage of interest acquired   20.00%                
Ownership Interest       20.00%   20.00%        
4750 Wilshire Boulevard | Three Co-Investors                    
Schedule of Equity Method Investments [Line Items]                    
Purchase price   $ 34,400,000                
Number of co-investors | investor   3                
Percentage of interest acquired   80.00%                
4750 Wilshire Boulevard | Multifamily                    
Schedule of Equity Method Investments [Line Items]                    
Number of real estate property units | unit   68     68   68      
4750 Wilshire Boulevard | Office Building                    
Schedule of Equity Method Investments [Line Items]                    
Square feet | ft²   30,335   30,335   30,335        
1902 Park Avenue                    
Schedule of Equity Method Investments [Line Items]                    
Ownership Interest       25.50%   25.50%        
1902 Park Avenue | Multifamily                    
Schedule of Equity Method Investments [Line Items]                    
Number of real estate property units | unit       75   75        
1015 N Mansfield Avenue                    
Schedule of Equity Method Investments [Line Items]                    
Ownership Interest       28.80%   28.80%        
1015 N Mansfield Avenue | Office Building                    
Schedule of Equity Method Investments [Line Items]                    
Square feet | ft²       44,141   44,141        
Mortgages Payable:                    
Schedule of Equity Method Investments [Line Items]                    
Outstanding balance       $ 475,784,000   $ 475,784,000   $ 440,446,000    
Corporate Joint Venture | 1915 Park Project                    
Schedule of Equity Method Investments [Line Items]                    
Work in progress       12,500,000   12,500,000        
Corporate Joint Venture | 4750 Wilshire Boulevard                    
Schedule of Equity Method Investments [Line Items]                    
Project cost       28,600,000   28,600,000        
Corporate Joint Venture | 1902 Park Avenue                    
Schedule of Equity Method Investments [Line Items]                    
Purchase price   $ 19,100,000                
Ownership Interest   50.00%             25.50%  
Corporate Joint Venture | 1015 N Mansfield Avenue                    
Schedule of Equity Method Investments [Line Items]                    
Purchase price $ 18,000,000                  
Ownership Interest 28.80%                  
Percentage of ownership acquired 100.00%                  
Loss from unconsolidated entities       697,000 $ 1,200,000 2,300,000 $ 442,000      
Corporate Joint Venture | 1015 N Mansfield Avenue | Office Building                    
Schedule of Equity Method Investments [Line Items]                    
Area of land (square feet) | ft² 44,141                  
Corporate Joint Venture | Mortgages Payable: | 1915 Park Project                    
Schedule of Equity Method Investments [Line Items]                    
Aggregate principal amount       9,400,000   9,400,000        
Outstanding balance       6,400,000   6,400,000        
Corporate Joint Venture | Mortgages Payable: | 4750 Wilshire Boulevard                    
Schedule of Equity Method Investments [Line Items]                    
Aggregate principal amount       38,500,000   38,500,000        
Outstanding balance       $ 37,800,000   $ 37,800,000        
Corporate Joint Venture | Mortgages Payable: | 1902 Park JV                    
Schedule of Equity Method Investments [Line Items]                    
Aggregate principal amount   $ 9,600,000                
Property In Los Angeles, California                    
Schedule of Equity Method Investments [Line Items]                    
Purchase price     $ 22,400,000              
Property In Los Angeles, California | Corporate Joint Venture                    
Schedule of Equity Method Investments [Line Items]                    
Purchase price     $ 51,000,000.0              
Property In Los Angeles, California | Corporate Joint Venture | Mortgages Payable:                    
Schedule of Equity Method Investments [Line Items]                    
Aggregate principal amount                   $ 23,900,000