v3.26.1
PARTNERS' EQUITY OF THE PARENT COMPANY - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 6 Months Ended
Jul. 22, 2026
Jun. 30, 2026
Mar. 31, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Common Partnership Unit [Line Items]              
Distributions declared (in dollars per share)   $ 0.08 $ 0.08 $ 0.15 $ 0.15    
Repurchased and retired (in shares)   0   0   700,000 0
Share price (in dollars per share)           $ 3.10  
Value of stock repurchased and retired     $ 2,170     $ 2,200  
Subsequent Event              
Earnings Per Common Partnership Unit [Line Items]              
Amount of dividend declared $ 14,300            
Brandywine Operating Partnership, L.P.              
Earnings Per Common Partnership Unit [Line Items]              
Distributions declared (in dollars per share)   $ 0.08          
Repurchase program, ratio of mirror unit of operating partnership retired for each common share repurchased (in shares)           1  
Repurchased and retired (in shares)   0   0     0
Share price (in dollars per share)           $ 3.10  
Value of stock repurchased and retired           $ 2,200  
Brandywine Operating Partnership, L.P. | Subsequent Event              
Earnings Per Common Partnership Unit [Line Items]              
Amount of dividend declared $ 14,300