Quarterly report pursuant to Section 13 or 15(d)

Mortgages, Loans Payable And Other Obligations (Summary Of Mortgages, Loans Payable And Other Obligations) (Details)

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Mortgages, Loans Payable And Other Obligations (Summary Of Mortgages, Loans Payable And Other Obligations) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2014
Dec. 31, 2013
Debt Instrument [Line Items]    
Mortgages, loans payable and other obligations $ 745,444 $ 746,191
6301 Ivy Lane [Member]
    
Debt Instrument [Line Items]    
Property Name 6301 Ivy Lane (b) [1]  
Lender RGA Reinsurance Company [1]  
Effective Rate 5.52% [1],[2]  
Mortgages, loans payable and other obligations 5,393 [1] 5,447 [1]
Loan maturity date Apr. 01, 2014 [1]  
395 West Passaic [Member]
    
Debt Instrument [Line Items]    
Property Name 395 West Passaic  
Lender State Farm Life Insurance Co.  
Effective Rate 6.004% [2]  
Mortgages, loans payable and other obligations 9,578 9,719
Loan maturity date May 01, 2014  
Port Imperial South 4/5 [Member]
    
Debt Instrument [Line Items]    
Property Name Port Imperial South 4/5  
Lender Wells Fargo Bank N.A.  
LIBOR LIBOR+3.50 [2]  
Spread over LIBOR 3.50%  
Mortgages, loans payable and other obligations 36,950 36,950
Loan maturity date Jun. 30, 2014  
35 Waterview Boulevard [Member]
    
Debt Instrument [Line Items]    
Property Name 35 Waterview Boulevard  
Lender Wells Fargo CMBS  
Effective Rate 6.348% [2]  
Mortgages, loans payable and other obligations 18,328 18,417
Loan maturity date Aug. 11, 2014  
6 Becker, 85 Livingston, 75 Livingston & 20 Waterview [Member]
    
Debt Instrument [Line Items]    
Property Name 6 Becker, 85 Livingston, 75 Livingston & 20 Waterview [3]  
Lender Wells Fargo CMBS [3]  
Effective Rate 10.22% [2],[3]  
Mortgages, loans payable and other obligations 64,527 [3] 64,233 [3]
Loan maturity date Aug. 11, 2014 [3]  
Number of properties used to collateralized mortgage 4  
4 Sylvan [Member]
    
Debt Instrument [Line Items]    
Property Name 4 Sylvan  
Lender Wells Fargo CMBS  
Effective Rate 10.19% [2]  
Mortgages, loans payable and other obligations 14,552 14,538
Loan maturity date Aug. 11, 2014  
10 Independence [Member]
    
Debt Instrument [Line Items]    
Property Name 10 Independence (d) [4]  
Lender Wells Fargo CMBS [4]  
Effective Rate 12.44% [2],[4]  
Mortgages, loans payable and other obligations 16,742 [4] 16,638 [4]
Loan maturity date Aug. 11, 2014 [4]  
9200 Edmonston Road [Member]
    
Debt Instrument [Line Items]    
Property Name 9200 Edmonston Road (e) [5]  
Lender Principal Commercial Funding L.L.C. [5]  
Effective Rate 5.534% [2],[5]  
Mortgages, loans payable and other obligations 4,085 [5] 4,115 [5]
Loan maturity date May 01, 2015 [5]  
Port Imperial South [Member]
    
Debt Instrument [Line Items]    
Property Name Port Imperial South  
Lender Wells Fargo Bank N.A.  
LIBOR LIBOR+1.75 [2]  
Spread over LIBOR 1.75%  
Mortgages, loans payable and other obligations 43,487 43,278
Loan maturity date Sep. 19, 2015  
4 Becker [Member]
    
Debt Instrument [Line Items]    
Property Name 4 Becker  
Lender Wells Fargo CMBS  
Effective Rate 9.55% [2]  
Mortgages, loans payable and other obligations 38,952 38,820
Loan maturity date May 11, 2016  
5 Becker [Member]
    
Debt Instrument [Line Items]    
Property Name 5 Becker (f) [6]  
Lender Wells Fargo CMBS [6]  
Effective Rate 12.83% [2],[6]  
Mortgages, loans payable and other obligations 13,275 [6] 13,092 [6]
Loan maturity date May 11, 2016 [6]  
210 Clay [Member]
    
Debt Instrument [Line Items]    
Property Name 210 Clay  
Lender Wells Fargo CMBS  
Effective Rate 13.42% [2]  
Mortgages, loans payable and other obligations 12,901 12,767
Loan maturity date May 11, 2016  
Various [Member]
    
Debt Instrument [Line Items]    
Property Name Various (g) [7]  
Lender Prudential Insurance [7]  
Effective Rate 6.332% [2],[7]  
Mortgages, loans payable and other obligations 147,008 [7] 147,477 [7]
Loan maturity date Jan. 15, 2017 [7]  
Number of properties used to collateralized mortgage 7  
150 Main St [Member]
    
Debt Instrument [Line Items]    
Property Name 150 Main St.  
Lender Webster Bank  
LIBOR LIBOR+2.35 [2]  
Spread over LIBOR 2.35%  
Mortgages, loans payable and other obligations 216  
Loan maturity date Mar. 30, 2017  
23 Main Street [Member]
    
Debt Instrument [Line Items]    
Property Name 23 Main Street  
Lender JPMorgan CMBS  
Effective Rate 5.587% [2]  
Mortgages, loans payable and other obligations 29,682 29,843
Loan maturity date Sep. 01, 2018  
Harborside Plaza 5 [Member]
    
Debt Instrument [Line Items]    
Property Name Harborside Plaza 5  
Lender The Northwestern Mutual Life Insurance Co. & New York Life Insurance Co.  
Effective Rate 6.842% [2]  
Mortgages, loans payable and other obligations 224,268 225,139
Loan maturity date Nov. 01, 2018  
233 Canoe Brook Road [Member]
    
Debt Instrument [Line Items]    
Property Name 233 Canoe Brook Road  
Lender The Provident Bank  
Effective Rate 4.375% [2]  
Mortgages, loans payable and other obligations 3,859 3,877
Loan maturity date Feb. 01, 2019  
100 Walnut Avenue [Member]
    
Debt Instrument [Line Items]    
Property Name 100 Walnut Avenue  
Lender Guardian Life Insurance Co.  
Effective Rate 7.311% [2]  
Mortgages, loans payable and other obligations 18,731 18,792
Loan maturity date Feb. 01, 2019  
One River Center [Member]
    
Debt Instrument [Line Items]    
Property Name One River Center (h) [8]  
Lender Guardian Life Insurance Co. [8]  
Effective Rate 7.311% [2],[8]  
Mortgages, loans payable and other obligations $ 42,910 [8] $ 43,049 [8]
Loan maturity date Feb. 01, 2019 [8]  
Number of properties used to collateralized mortgage 3  
[1] On April 1, 2014, the Company repaid the mortgage loan at par, using available cash.
[2] Reflects effective rate of debt, including deferred financing costs, comprised of the cost of terminated treasury lock agreements (if any), debt initiation costs, mark-to-market adjustment of acquired debt and other transaction costs, as applicable.
[3] Mortgage is cross collateralized by the four properties.
[4] The Company is negotiating a deed-in-lieu of foreclosure in satisfaction of this mortgage loan.
[5] The mortgage loan originally matured on May 1, 2013. The maturity date was extended until May 1, 2015 with the same interest rate. Excess cash flow, as defined, is being held by the lender for re-leasing costs. The deed for the property was placed in escrow and is available to the lender in the event of default or non-payment at maturity.
[6] The cash flow from this property is insufficient to cover operating costs and debt service. Consequently, the Company notified the lender and suspended debt service payments in August 2013. The Company has begun discussions with the lender regarding deed-in-lieu of foreclosure and began remitting available cash flow to the lender effective August 2013.
[7] Mortgage is cross collateralized by seven properties. The Operating Partnership has agreed, subject to certain conditions, to guarantee repayment of a portion of the loan.
[8] Mortgage is collateralized by the three properties comprising One River Center.