Quarterly report pursuant to Section 13 or 15(d)

Investments In Unconsolidated Joint Ventures (Red Bank Corporate Plaza) (Details)

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Investments In Unconsolidated Joint Ventures (Red Bank Corporate Plaza) (Details) (Red Bank Corporate Plaza [Member], USD $)
0 Months Ended 1 Months Ended 3 Months Ended 6 Months Ended
Sep. 22, 2011
May 31, 2011
Jun. 30, 2012
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Jun. 30, 2011
Jun. 30, 2012
sqft
Jun. 30, 2011
Red Bank Corporate Plaza [Member]
           
Schedule of Equity Method Investments [Line Items]            
Area of office property, square feet     92,878   92,878  
Lease expiration date         Sep. 30, 2017  
Percentage of interest in venture     50.00%   50.00%  
Mortgage loans, carrying amount   $ 20,300,000        
Spread over LIBOR   125     300  
Mortgage loan, maturity date         May 17, 2016 May 2011
Repayment of mortgage loan   1,700,000        
New mortgage loan         17,700,000  
LIBOR Interest Rate     0.24%   0.24%  
Percentage of loan principal swapped 75.00%          
Fixed interest rate 3.99375%          
Management, leasing and other services fees     $ 25,000 $ 24,000 $ 50,000 $ 48,000