Quarterly report pursuant to Section 13 or 15(d)

Recent Transactions (Summary Of Income From Property Held For Sale, Net) (Details)

v3.20.1
Recent Transactions (Summary Of Income From Property Held For Sale, Net) (Details) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Less - Accumulated depreciation $ (582,829) $ (558,617)
Rental property held for sale, net 898,169 $ 966,497
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Land 230,623  
Buildings & Other 1,265,438  
Less - Accumulated depreciation (383,760)  
Less: Cumulative unrealized losses on property held for sale (214,132)  
Rental property held for sale, net 898,169  
Unbilled rents receivable, net 31,445  
Deferred charges, net 34,492  
Total intangibles, net 32,724  
Total deferred charges & other assets, net 70,017  
Mortgages & loans payable, net 123,679  
Total below market liability 8,235  
Accounts payable, accrued exp & other liability 22,374  
Unearned rents/deferred rental income 5,052  
Disposal Group, Held-for-sale, Not Discontinued Operations [Member] | Other Assets Held for Sale [Member]    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Land 85,472  
Buildings & Other 47,571  
Less - Accumulated depreciation (7,991)  
Less: Cumulative unrealized losses on property held for sale (44,140)  
Rental property held for sale, net 80,912  
Unbilled rents receivable, net 2,043  
Deferred charges, net 1,316  
Total deferred charges & other assets, net 1,326  
Accounts payable, accrued exp & other liability 174  
Unearned rents/deferred rental income 203  
Suburban Office Portfolio [Member] | Disposal Group, Held-for-sale, Not Discontinued Operations [Member]    
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Land 145,151  
Buildings & Other 1,217,867  
Less - Accumulated depreciation (375,769)  
Less: Cumulative unrealized losses on property held for sale (169,992)  
Rental property held for sale, net 817,257  
Unbilled rents receivable, net 29,402  
Deferred charges, net 33,176  
Total intangibles, net 32,724  
Total deferred charges & other assets, net 68,691  
Mortgages & loans payable, net 123,679  
Total below market liability 8,235  
Accounts payable, accrued exp & other liability 22,200  
Unearned rents/deferred rental income $ 4,849