Annual report pursuant to Section 13 and 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
Dec. 31, 2022
Dec. 31, 2021
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Less: Accumulated depreciation $ (631,910) $ (583,416)
Real estate held for sale, net 193,933 618,646
Right of use assets   19,200
Right of use liabilities   20,500
Suburban Office Portfolio    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Land 4,336  
Building & Other 30,389  
Less: Accumulated depreciation (12,165)  
Less: Cumulative unrealized losses on property held for sale (4,440)  
Real estate held for sale, net 18,120  
Unbilled rents receivable, net 368  
Deferred charges, net 426  
Total deferred charges & other assets, net 457  
Mortgages & loans payable, net 0  
Accounts payable, accrued exp & other liability (759)  
Other Assets & Liabilities Held for Sale    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Land 88,507  
Building & Other 112,165  
Less: Accumulated depreciation (16,759)  
Less: Cumulative unrealized losses on property held for sale (8,100)  
Real estate held for sale, net 175,813  
Unbilled rents receivable, net 0  
Deferred charges, net 0  
Total deferred charges & other assets, net 985  
Mortgages & loans payable, net (85,664)  
Accounts payable, accrued exp & other liability (473)  
Total    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Land 92,843 159,968
Building & Other 142,554 618,216
Less: Accumulated depreciation (28,924) (159,538)
Less: Cumulative unrealized losses on property held for sale (12,540) 618,646
Real estate held for sale, net 193,933  
Unbilled rents receivable, net 368 30,526
Deferred charges, net 426 16,056
Total intangibles, net   31,155
Total deferred charges & other assets, net 1,442 69,410
Mortgages & loans payable, net (85,664) (397,953)
Total below market liability   (24,098)
Accounts payable, accrued exp & other liability $ (1,232) (49,648)
Unearned rents/deferred rental income   $ (5,831)