Quarterly report pursuant to Section 13 or 15(d)

RECENT TRANSACTIONS - Schedule Of Real Estate Held For Sale/Discontinued Operations/Dispositions (Details)

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RECENT TRANSACTIONS - Schedule Of Real Estate Held For Sale/Discontinued Operations/Dispositions (Details) - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Less: Accumulated depreciation $ (611,759) $ (583,416)
Real estate held for sale, net 464,954 $ 618,646
Total    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Land 143,862  
Building & Other 487,998  
Less: Accumulated depreciation (157,366)  
Less: Cumulative unrealized losses on property held for sale (9,540)  
Real estate held for sale, net 464,954  
Unbilled rents receivable, net 16,342  
Deferred charges, net 12,169  
Mortgages & loans payable, net (339,832)  
Accounts payable, accrued exp & other liability (5,664)  
Unearned rents/deferred rental income (3,781)  
Total | Property Disposed To Be Disposed, Mortgage To Be Assumed By Purchaser    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Mortgages & loans payable, net 250,000  
Suburban Office Portfolio    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Land 4,336  
Building & Other 30,388  
Less: Accumulated depreciation (12,165)  
Less: Cumulative unrealized losses on property held for sale (4,440)  
Real estate held for sale, net 18,119  
Unbilled rents receivable, net 479  
Deferred charges, net 554  
Mortgages & loans payable, net 0  
Accounts payable, accrued exp & other liability (755)  
Unearned rents/deferred rental income 0  
Other Assets & Liabilities Held for Sale    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Land 139,526  
Building & Other 457,610  
Less: Accumulated depreciation (145,201)  
Less: Cumulative unrealized losses on property held for sale (5,100)  
Real estate held for sale, net 446,835  
Unbilled rents receivable, net 15,863  
Deferred charges, net 11,615  
Mortgages & loans payable, net (339,832)  
Accounts payable, accrued exp & other liability (4,909)  
Unearned rents/deferred rental income $ (3,781)