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LEASES - As Lessee - Ground Lease and Office Lease (Details)
3 Months Ended 9 Months Ended
Sep. 30, 2025
USD ($)
item
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
item
Sep. 30, 2024
USD ($)
Ground Lease        
Lessee Accounting        
Operating lease, option to extend     true  
Operating lease, remaining lease term 4 years 4 months 24 days   4 years 4 months 24 days  
Ground Lease | Real estate expenses        
Lessee Accounting        
Operating lease expense | $ $ 122,000 $ 122,000 $ 366,000 $ 366,000
Ground Lease | Five-Year Lease        
Lessee Accounting        
Operating lease, number of renewal options | item 3   3  
Operating lease, renewal term 5 years   5 years  
Ground Lease | Seven-Month Lease        
Lessee Accounting        
Operating lease, number of renewal options | item 1   1  
Operating lease, renewal term 7 months   7 months  
Office Lease        
Lessee Accounting        
Operating lease, option to extend     true  
Operating lease, remaining lease term 11 years 3 months 18 days   11 years 3 months 18 days  
Office Lease | General and administrative expense        
Lessee Accounting        
Operating lease expense | $ $ 14,000 $ 14,000 $ 42,000 $ 42,000
Office Lease | Five-Year Lease        
Lessee Accounting        
Operating lease, renewal term 5 years   5 years