v3.25.2
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Real Estate Related Notes Receivable (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Dec. 31, 2023
MultiFamily Non-Same-Store | Lydian - Denver, CO | Tax Increment Financing      
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE      
Interest rate 6.00% 6.00%  
Loan commitment $ 4.0 $ 4.1  
MultiFamily Same-Store | Ironwood | Tax Increment Financing      
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE      
Interest rate 4.50%    
Loan commitment $ 5.1 5.2  
Multi-Family Residential | Inver Grove Heights Minnesota | Mezzanine Loan      
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE      
Mortgage loans receivable at fair value $ 15.1 $ 15.1  
Interest rate 10.00%    
Mortgage loans receivable face amount     $ 15.1
Percent of membership interest pledged as collateral 100.00%    
Co-venturer      
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE      
Mortgage loans receivable at fair value $ 1.4    
Interest rate 1.55%