Quarterly report pursuant to Section 13 or 15(d)

Investments In Unconsolidated Joint Ventures (Summary Of Unconsolidated Joint Ventures) (Details)

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Investments In Unconsolidated Joint Ventures (Summary Of Unconsolidated Joint Ventures) (Details)
$ in Thousands
 6 Months Ended
Mar. 31, 2017
USD ($)
item
Feb. 15, 2017
USD ($)
Feb. 03, 2017
USD ($)
Jun. 30, 2017
USD ($)
ft²
item
Jun. 30, 2016
USD ($)
Apr. 30, 2017
Feb. 28, 2017
shares
Feb. 02, 2017
Dec. 31, 2016
USD ($)
Schedule of Equity Method Investments [Line Items]                  
Carrying Amount       $ 315,110         $ 320,047
Cash consideration       2,000          
Accounts payable, accrued expenses and other liabilities       177,801         159,874
Purchase price of property       46,103 $ 51,638        
Proceeds from the sale of investments in unconsolidated joint ventures       $ 14,849 $ 6,420        
Minimum [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Company's Effective Ownership %       12.50%          
Maximum [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Company's Effective Ownership %       85.00%          
RoseGarden Monaco Holdings, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Company's Effective Ownership %           100.00% 13.80%    
Preferred units shares issued | shares             9,122    
Crystal House Apartments Investors LLC [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Percentage of interest in developable land       50.00%          
Number of units available for development | item       295          
Number of approved units available for development | item       252          
RoseGarden Marbella South, L.L.C. [Member] | Construction Loan [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of extension options | item       2          
Number of extension options exercised | item 1                
Loan extension period       1 year          
Extension fee       0.25%          
Maximum borrowing capacity $ 75,000     $ 77,400          
Harborside Unit A Urban Renewal, LLC [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Company's Effective Ownership %       85.00%          
Harborside Unit A Urban Renewal, LLC [Member] | Construction/Permanent Loan [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Maximum borrowing capacity       $ 192,000          
Plaza VIII & IX Associates, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Company's Effective Ownership %               50.00%  
Elmajo Urban Renewal Associates, LLC And Estuary Urban Renewal Associates, LLC [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Percentage of interest in venture   7.50%              
Proceeds from the sale of investments in unconsolidated joint ventures   $ 5,100              
The Shops At 40 Park Property [Member] | Rosewood Morristown, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft²       50,973          
Property Debt, Balance       $ 6,248          
Property Debt, Maturity Date       Aug. 01, 2018          
Property Debt, Interest Rate       3.63%          
Residual ownership interest       12.50%          
Lofts At 40 Park Property [Member] | Rosewood Morristown, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       59          
Indirect ownership interest       25.00%          
Number of stories | item       5          
Lofts At 40 Park Property [Member] | Rosewood Morristown, L.L.C. [Member] | Construction Loan [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Property Debt, Balance     $ 3,345            
Property Debt, Maturity Date     Feb. 01, 2020            
Property Debt, Interest Rate, Spread Over LIBOR     2.50%            
Metropolitan Property [Member] | Rosewood Morristown, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Property Debt, Balance       $ 37,242          
Property Debt, Maturity Date       Sep. 01, 2020          
Property Debt, Interest Rate       3.25%          
Port Imperial North Land [Member] | Roseland/Port Imperial Partners, L.P. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       836          
Residual ownership interest       20.00%          
Unconsolidated Joint Venture Multi-Family Properties [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       3,275          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Marbella RoseGarden, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item [1]       412          
Company's Effective Ownership % [1],[2]       24.27%          
Carrying Amount [1]       $ 14,925         15,150
Property Debt, Balance [1]       $ 95,000          
Property Debt, Maturity Date [1]       May 01, 2018          
Property Debt, Interest Rate [1]       4.99%          
Unconsolidated Joint Venture Multi-Family Properties [Member] | RoseGarden Monaco Holdings, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item [1]       523          
Company's Effective Ownership % [1],[2],[3]       28.76%          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Rosewood Morristown, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item [1],[4]       130          
Company's Effective Ownership % [1],[2],[4]       12.50%          
Carrying Amount [1],[4]       $ 6,992         7,145
Property Debt, Balance [1],[4],[5]       $ 46,835          
Property Debt, Interest Rate [1],[4]                
Unconsolidated Joint Venture Multi-Family Properties [Member] | Riverwalk G Urban Renewal, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       316          
Company's Effective Ownership % [2]       22.50%          
Carrying Amount       $ 9,321         9,707
Property Debt, Balance       $ 82,000          
Property Debt, Maturity Date       Nov. 10, 2026          
Property Debt, Interest Rate       3.21%          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Elmajo Urban Renewal Associates, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item [1]       355          
Company's Effective Ownership % [1],[2]       7.50%          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Crystal House Apartments Investors LLC [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item [6]       825          
Company's Effective Ownership % [2],[6]       25.00%          
Carrying Amount [6]       $ 31,025         30,565
Property Debt, Balance [6]       $ 165,000          
Property Debt, Maturity Date [6]       Apr. 01, 2020          
Property Debt, Interest Rate [6]       3.17%          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Roseland/Port Imperial Partners, L.P. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item [1],[7]       360          
Company's Effective Ownership % [1],[2],[7]       20.00%          
Carrying Amount [1],[7]       $ 1,922         1,678
Unconsolidated Joint Venture Multi-Family Properties [Member] | RoseGarden Marbella South, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       311          
Company's Effective Ownership % [2]       24.27%          
Carrying Amount       $ 17,211         18,050
Property Debt, Balance       $ 74,062          
Property Debt, Maturity Date       Mar. 30, 2018          
Property Debt, Interest Rate, LIBOR [8]       L+2.25          
Property Debt, Interest Rate, Spread Over LIBOR [8]       2.25%          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Estuary Urban Renewal Unit B, LLC [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item [1],[9]       227          
Company's Effective Ownership % [1],[2],[9]       7.50%          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Riverpark At Harrison I, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       141          
Company's Effective Ownership % [2]       45.00%          
Carrying Amount       $ 1,872         2,085
Property Debt, Balance       $ 30,000          
Property Debt, Maturity Date       Aug. 01, 2025          
Property Debt, Interest Rate       3.70%          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Capitol Place Mezz LLC [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       378          
Company's Effective Ownership % [2]       50.00%          
Carrying Amount       $ 41,617         43,073
Property Debt, Balance       $ 100,700          
Property Debt, Maturity Date       Jul. 01, 2033          
Property Debt, Interest Rate       4.82%          
Unconsolidated Joint Venture Multi-Family Properties [Member] | Harborside Unit A Urban Renewal, LLC [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       762          
Company's Effective Ownership % [2]       85.00%          
Carrying Amount       $ 97,665         100,188
Property Debt, Balance       $ 186,128          
Property Debt, Maturity Date       Aug. 01, 2029          
Property Debt, Interest Rate [10]       5.197%          
Unconsolidated Joint Venture Multi-Family Properties [Member] | RoseGarden Monaco, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       250          
Company's Effective Ownership % [2]       41.67%          
Carrying Amount       $ 1,430         1,400
Unconsolidated Joint Venture Multi-Family Properties [Member] | Grand Jersey Waterfront URA, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       850          
Company's Effective Ownership % [2]       50.00%          
Carrying Amount       $ 337         337
Unconsolidated Joint Venture Multi-Family Properties [Member] | Hillsborough 206 Holdings, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft²       160,000          
Company's Effective Ownership % [2]       50.00%          
Carrying Amount       $ 1,962         1,962
Unconsolidated Joint Venture Multi-Family Properties [Member] | Plaza VIII & IX Associates, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft² [11]       1,225,000          
Company's Effective Ownership % [2],[11]       50.00%          
Carrying Amount [11]                 4,448
Unconsolidated Joint Venture Multi-Family Properties [Member] | Elmajo Urban Renewal Associates, LLC And Estuary Urban Renewal Associates, LLC [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Percentage of interest in venture   7.50%              
Proceeds from the sale of investments in unconsolidated joint ventures   $ 5,100              
Unconsolidated Joint Venture Office Buildings [Member] | Red Bank Corporate Plaza, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft²       92,878          
Company's Effective Ownership % [2]       50.00%          
Carrying Amount       $ 4,572         4,339
Property Debt, Balance       $ 14,176          
Property Debt, Maturity Date       May 17, 2018          
Property Debt, Interest Rate, LIBOR       L+3.00          
Property Debt, Interest Rate, Spread Over LIBOR       3.00%          
Unconsolidated Joint Venture Office Buildings [Member] | 12 Vreeland Associates, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft²       139,750          
Company's Effective Ownership % [2]       50.00%          
Carrying Amount       $ 6,368         6,237
Property Debt, Balance       $ 10,273          
Property Debt, Maturity Date       Jul. 01, 2023          
Property Debt, Interest Rate       2.87%          
Unconsolidated Joint Venture Office Buildings [Member] | BNES Associates III [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft²       106,345          
Company's Effective Ownership % [2]       31.25%          
Carrying Amount       $ 3,169         3,124
Property Debt, Balance       $ 5,141          
Property Debt, Maturity Date       Nov. 01, 2023          
Property Debt, Interest Rate       4.76%          
Unconsolidated Joint Venture Office Buildings [Member] | KPG-P 100 IMW JV, LLC [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft² [12]       339,615          
Unconsolidated Joint Venture Office Buildings [Member] | Keystone-Penn [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft² [12]       1,842,820          
Company's Effective Ownership % [2],[12]                
Property Debt, Interest Rate, LIBOR [12]       -          
Unconsolidated Joint Venture Office Buildings [Member] | Keystone-TriState [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft² [12]       1,266,384          
Company's Effective Ownership % [2],[12]                
Carrying Amount [12]                 2,285
Property Debt, Interest Rate [12]                
Unconsolidated Joint Venture Office Buildings [Member] | KPG-MCG Curtis JV, LLC [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft² [13]       885,000          
Company's Effective Ownership % [2],[13]       50.00%          
Carrying Amount [13]       $ 71,258         65,400 [14]
Property Debt, Balance [13]                
Property Debt, Interest Rate [13]                
Unconsolidated Joint Venture Other Property [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Carrying Amount       $ 315,110         320,047
Property Debt, Balance       $ 908,404          
Unconsolidated Joint Venture Other Property [Member] | Roseland/North Retail, L.L.C. [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Rentable Square Feet (sf) | ft²       30,745          
Company's Effective Ownership % [2]       20.00%          
Carrying Amount       $ 1,669         1,706
Unconsolidated Joint Venture Other Property [Member] | South Pier At Harborside [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Number of Apartment Units | item       350          
Company's Effective Ownership % [2]       50.00%          
Carrying Amount               163
Property Debt, Balance       $ 99,089          
Property Debt, Maturity Date       Oct. 01, 2026          
Property Debt, Interest Rate       3.668%          
Unconsolidated Joint Venture Other Property [Member] | Other [Member]                  
Schedule of Equity Method Investments [Line Items]                  
Carrying Amount [15]       $ 1,795         $ 1,005
[1] The Company's ownership interests in this venture are subordinate to its partner's preferred capital balance and the Company is not expected to meaningfully participate in the venture's cash flows in the near term.
[2] Company's effective ownership % represents the Company's entitlement to residual distributions after payments of priority returns, where applicable.
[3] On February 28, 2017, 9,122 Series A-1 Units were issued to the joint venture partner as non-cash consideration for the partner's approximate 13.8 percent ownership interest in the joint venture. In April 2017, the Company acquired the remaining joint venture interests and increased its ownership interest to 100 percent. See Note 3: Recent Transactions - Consolidation.
[4] Through the joint venture, the Company also owns a 12.5 percent interest in a 50,973 square feet retail building ("Shops at 40 Park") and a 25 percent interest in a to-be-built 59-unit, five story multi-family rental development property ("Lofts at 40 Park").
[5] Property debt balance consists of: (i) an amortizable loan, collateralized by the Metropolitan at 40 Park, with a balance of $37,242, bears interest at 3.25 percent, matures in September 2020; (ii) an amortizable loan, collateralized by the Shops at 40 Park, with a balance of $6,248, bears interest at 3.63 percent, matures in August 2018. On February 3, 2017, the venture obtained a construction loan for the Lofts at 40 Park with a balance of $3,345, which bears interest at LIBOR plus 250 basis points and matures in February 2020.
[6] The Company also owns a 50 percent interest in a vacant land to accommodate the development of approximately 295 additional units of which 252 are currently approved.
[7] The Company also owns a 20 percent residual interest in undeveloped land parcels: parcels 6, I, and J that can accommodate the development of 836 apartment units.
[8] The construction loan had a maximum borrowing amount of $77,400 and provided, subject to certain conditions, two one-year extension options with a fee of 25 basis points for each year. On March 31, 2017, the Company exercised its first one-year extension option and concurrently the maximum borrowing amount was reduced to $75,000.
[9] On February 15, 2017, the Company sold its 7.5 percent interest in Elmajo Urban Renewal Associates, LLC and Estuary Urban Renewal Unit B, LLC joint ventures that own operating multi-family properties, located in Weehawken, New Jersey for a combined sales price of $5.1 million.
[10] The construction/permanent loan has a maximum borrowing amount of $192,000. The Company owns an 85 percent interest with shared control over major decisions such as, approval of budgets, property financings and leasing guidelines. The development project was placed in service in second quarter 2017.
[11] On February 3, 2017, the Company acquired the equity interest of its partner. See Note 3: Recent Transactions - Consolidation.
[12] On January 31, 2017, the Company sold its equity interest in the joint venture. See Note 3: Recent Transactions - Unconsolidated Joint Venture Activity.
[13] Includes undivided interests in the same manner as investments in noncontrolling partnership, pursuant to ASC 970-323-25-12.
[14] See Note 9: Mortgages, Loans Payable and Other Obligations for debt secured by interests in these assets.
[15] The Company owns other interests in various unconsolidated joint ventures, including interests in assets previously owned and interest in ventures whose businesses are related to its core operations. These ventures are not expected to significantly impact the Company's operations in the near term.