Annual report pursuant to Section 13 and 15(d)

Recent Transactions (Schedule Of Real Estate Held For Sale/Discontinued Operations/Dispositions) (Details)

v3.22.0.1
Recent Transactions (Schedule Of Real Estate Held For Sale/Discontinued Operations/Dispositions) (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]    
Less: Accumulated depreciation $ (583,416) $ (656,331)
Real estate held for sale, net 618,646 656,963
Fort Lee, Parsippany, Madison, Short Hills, Edison, Red Bank, Florham Park [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]    
Unbilled rents receivable, net   19,318
Deferred charges, net   15,981
Total intangibles, net   26,069
Total deferred charges & other assets, net   43,178
Mortgages & loans payable, net   (123,768)
Total below market liability   (6,538)
Accounts payable, accrued exp & other liability   (17,052)
Unearned rents/deferred rental income   (8,639)
Fort Lee, Parsippany, Madison, Short Hills, Edison, Red Bank, Florham Park [Member] | 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]    
Unbilled rents receivable, net   2,102
Deferred charges, net   661
Total deferred charges & other assets, net   665
Accounts payable, accrued exp & other liability   (80)
Unearned rents/deferred rental income   (217)
Parsippany, Madison, Short Hills, Edison, And Red Bank, New Jersey [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   164,211
Buildings & Other   779,871
Less: Accumulated depreciation   (169,031)
Less: Cumulative unrealized losses on property held for sale   (118,088)
Real estate held for sale, net   656,963
Parsippany, Madison, Short Hills, Edison, And Red Bank, New Jersey [Member] | 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 159,968 76,396
Buildings & Other 618,216 42,202
Less: Accumulated depreciation (159,538) (7,991)
Less: Cumulative unrealized losses on property held for sale   (40,731)
Real estate held for sale, net 618,646 69,876
Unbilled rents receivable, net 30,526  
Deferred charges, net 16,056  
Total intangibles, net 31,155  
Total deferred charges & other assets, net 69,410  
Mortgages & loans payable, net (397,953)  
Total below market liability (24,098)  
Accounts payable, accrued exp & other liability (49,648)  
Unearned rents/deferred rental income $ (5,831)  
Suburban Office Portfolio [Member] | Fort Lee, Parsippany, Madison, Short Hills, Edison, Red Bank, Florham Park [Member] | 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]    
Unbilled rents receivable, net   17,216
Deferred charges, net   15,320
Total intangibles, net   26,069
Total deferred charges & other assets, net   42,513
Mortgages & loans payable, net   (123,768)
Total below market liability   (6,538)
Accounts payable, accrued exp & other liability   (16,972)
Unearned rents/deferred rental income   (8,422)
Suburban Office Portfolio [Member] | Parsippany, Madison, Short Hills, Edison, And Red Bank, New Jersey [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   87,815
Buildings & Other   737,669
Less: Accumulated depreciation   (161,040)
Less: Cumulative unrealized losses on property held for sale   (77,357)
Real estate held for sale, net   $ 587,087