Quarterly report pursuant to Section 13 or 15(d)

Properties, net (Details 5)

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Properties, net (Details 5) (2011 Office Property Acquisition, USD $)
1 Months Ended 9 Months Ended
Aug. 31, 2011
sqfeet
Sep. 30, 2011
Aug. 09, 2011
2011 Acquisitions      
Square footage of real estate properties (in square feet) 138,000    
Acquired property, percentage leased (in percent)     100.00%
Total assets     $ 33,413,000
Cost expensed in connection with acquisition of office properties   152,000  
Land, operating properties
     
2011 Acquisitions      
Total assets     251,000
Buildings and improvements
     
2011 Acquisitions      
Total assets     26,824,000
Intangible assets on real estate acquisitions
     
2011 Acquisitions      
Total assets     6,338,000
Intangible assets on real estate acquisitions      
Weighted average amortization period of intangible assets (in years) 6    
In-place lease value
     
Intangible assets on real estate acquisitions      
Gross Carrying Amount     2,800,000
Weighted average amortization period of intangible assets (in years) 3    
Tenant relationship value
     
Intangible assets on real estate acquisitions      
Gross Carrying Amount     3,072,000
Weighted average amortization period of intangible assets (in years) 8    
Above-market leases
     
Intangible assets on real estate acquisitions      
Gross Carrying Amount     $ 466,000
Weighted average amortization period of intangible assets (in years) 3