v3.26.3
BASIS OF PRESENTATION AND SIGNIFICANT ACCOUNTING POLICIES - Real Estate Related Notes Receivable (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Oct. 01, 2024
Dec. 31, 2023
Mar. 31, 2020
MultiFamily Same-Store | Lydian - Denver, CO | Tax Increment Financing          
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE          
Loan commitment $ 3.8 $ 3.9 $ 4.1    
Interest rate 6.00%        
MultiFamily Property Sold | Ironwood | Tax Increment Financing          
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE          
Loan commitment   4.9     $ 6.6
Interest rate 4.50%        
Multi-Family Residential | Inver Grove Heights Minnesota | Mezzanine Loan          
MORTGAGE RECEIVABLE AND NOTES RECEIVABLE          
Loan commitment $ 19.4 18.0   $ 15.1  
Interest rate 10.00%        
Mortgage loans receivable at fair value $ 15.1 $ 15.1      
Percent of membership interest pledged as collateral 100.00%