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Significant Accounting Policies (Narratives) (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Property, Plant and Equipment [Line Items]    
Real Estate Accumulated Depreciation, Depreciation Expense $ 1,108,000 $ 974,000
Amortization of above and below Market Leases 45,000 112,000
Amortization of Intangible Assets $ 133,000 $ 150,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 1,380,948 1,360,407
Building and Building Improvements [Member] | Minimum [Member]
   
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 30 years  
Building and Building Improvements [Member] | Maximum [Member]
   
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 55 years  
Assets Leased to Others [Member] | Minimum [Member]
   
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 1 year  
Assets Leased to Others [Member] | Maximum [Member]
   
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 10 years  
Furniture and Fixtures [Member] | Minimum [Member]
   
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 4 years  
Furniture and Fixtures [Member] | Maximum [Member]
   
Property, Plant and Equipment [Line Items]    
Property, Plant and Equipment, Useful Life 5 years