| RECENT TRANSACTIONS (Tables)
 | 6 Months Ended | 
| Jun. 30, 2022 | 
|---|
| Recent Transactions [Abstract] |  | 
| Schedule Of Properties Commencing Initial Operations | 
The following property commenced initial operations during the six months ended June 30, 2022 (dollars in thousands):
 
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| In Service Date |  | Property |  | Location |  | Property Type |  | # of Apartment Units
 |  | Total Development
 Costs Incurred
 |  
| 04/01/22 |  | Haus25 (a) |  | Jersey City |  | Multi-Family |  | 750 |  | $ | 347,918 |  |  
| Totals |  |  |  |  |  |  |  | 750 |  | $ | 347,918 |  | (a) As of June 30, 2022, 631 apartment units are currently available for occupancy. | 
| Schedule Of Assets Held For Sale | 
The following table summarizes the real estate held for sale, net, and other assets and liabilities (dollars in thousands): 
 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
|  |  | Suburban Office
 Portfolio
 |  | Other Assets Held for Sale
 | Total |  
| Land |  | $ | 4,336 |  | $ | 122,660 | $ | 126,996 |  
| Building & Other |  | 25,945 |  | 360,731 | 386,676 |  
| Less: Accumulated depreciation |  | (12,165) |  |  | (128,442) |  | (140,607) |  |  
| Less: Cumulative unrealized losses on property held for sale |  | (4,440) |  |  | $ | — |  | (4,440) |  |  
| Real estate held for sale, net |  | $ | 13,676 |  | $ | 354,949 | $ | 368,625 | 
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
| Other assets and liabilities |  | Suburban Office
 Portfolio
 |  | Other Assets Held for Sale
 | Total |  
| Unbilled rents receivable, net (a) |  | $ | 572 |  | $ | 15,671 | $ | 16,243 |  
| Deferred charges, net (a) |  | 682 |  | 12,164 | 12,846 |  
|  |  |  |  |  |  |  
| Mortgages & loans payable, net (a) |  | — |  |  | (249,155) |  | (249,155) |  |  
| Accounts payable, accrued exp & other liability |  | (1,054) |  | (4,890) | (5,944) |  
| Unearned rents/deferred rental income (a) |  | — |  |  | (3,778) |  | (3,778) |  | 
(a)Expected to be removed with the completion of the sales.
 | 
| Schedule Of Real Estate Properties Sold And Disposed | 
The Company disposed of the following rental property during the six months ended June 30, 2022 (dollars in thousands):
 
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| Disposition Date
 |  | Property/Address |  | Location |  | # of Bldgs.
 |  | Rentable Square
 Feet
 |  | Property Type
 |  | Net Sales
 Proceeds
 |  | Net Carrying
 Value
 |  | Realized Gains
 (Losses)
 Unrealized
 Losses, net
 | Discontinued Operations
 Realized
 Gains
 (Losses)/
 Unrealized
 Losses, net
 |  
| 01/21/22 |  | 111 River Street |  | Hoboken, New Jersey |  | 1 |  | 566,215 |  |  | Office |  | $ | 208,268 |  | (a) | $ | 206,432 |  |  | $ | 1,836 |  | $ | — |  |  
|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  
| Unrealized gains (losses) on real estate held for sale |  |  |  |  |  |  |  |  |  |  |  | — |  | (4,440) |  |  
| Totals |  |  |  |  |  | 1 |  | 566,215 |  |  |  |  | $ | 208,268 |  |  | $ | 206,432 |  |  | $ | 1,836 |  | $ | (4,440) |  | 
(a)The mortgage loan encumbering the property was repaid at closing, for which the Company incurred costs of $6.3 million. These costs were expensed as loss from extinguishment of debt during the six months ended June 30, 2022.
 | 
| Schedule Of Disposed Developable Land | 
The Company disposed of the following developable land holdings during the six months ended June 30, 2022 (dollars in thousands):
 
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| Disposition Date
 |  | Property Address |  | Location |  | Net Sales
 Proceeds
 |  | Net Carrying
 Value
 |  | Realized Gains
 (Losses)/
 Unrealized
 Losses, net
 |  
| 03/22/22 |  | Palladium residential land |  | West Windsor, New Jersey |  | $ | 23,908 |  |  | $ | 24,182 |  |  | $ | (274) |  |  
| 03/22/22 |  | Palladium commercial land |  | West Windsor, New Jersey |  | 4,688 |  |  | 1,791 |  |  | 2,897 |  |  
| 04/15/22 |  | Port Imperial Park parcel (a) |  | Weehawken, New Jersey |  | 29,331 |  |  | 29,744 |  |  | (413) |  |  
| 04/21/22 |  | Urby II/III (a) |  | Jersey City, New Jersey |  | 68,854 |  |  | 13,316 |  |  | 55,538 |  |  
|  |  |  |  |  |  |  |  |  |  |  |  
| Totals |  |  |  |  |  | $ | 126,781 |  |  | $ | 69,033 |  |  | $ | 57,748 |  | (a)The net sale proceeds were held by a qualified intermediary, which is recorded in deferred charges and other assets as of June 30, 2022. See Note 5: Deferred Charges and Other Assets, Net. |