v3.26.1
SEGMENT INFORMATION - Schedule of Real Estate Investments, at Cost of Company's Reportable Segments (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Segment Reporting [Line Items]    
Operating properties $ 3,527,129 $ 3,753,780
Assets held for sale, net 232,921 0
Total 3,760,050 3,753,780
Prepaid ground leases, net 34,156 51,399
Right of use asset - operating leases, net 12,266 17,806
Construction-in-progress 85,569 118,543
Land held for development 75,134 70,405
Prepaid leasehold interests in land held for development, net 27,762 27,762
Continuing Operations    
Segment Reporting [Line Items]    
Operating properties 3,527,129 3,753,780
Total Core Segments | Continuing Operations    
Segment Reporting [Line Items]    
Operating properties 3,387,196 3,473,468
Philadelphia CBD | Continuing Operations    
Segment Reporting [Line Items]    
Operating properties 2,115,745 2,080,220
Pennsylvania Suburbs | Continuing Operations    
Segment Reporting [Line Items]    
Operating properties 880,047 883,218
Austin, Texas | Continuing Operations    
Segment Reporting [Line Items]    
Operating properties 391,404 510,030
Other | Continuing Operations    
Segment Reporting [Line Items]    
Operating properties $ 139,933 $ 280,312