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Note 3 - Significant Accounting Policies (Tables)
 3 Months Ended
Mar. 31, 2017
Notes Tables  
Property, Plant and Equipment, Useful Life [Table Text Block]
Building and improvements (years)
  
 10
 –
44
 
  
Tenant improvements
  
Shorter of useful life or lease term
  
Furniture, fixtures and equipment
(years)
  
 3
 –
15
 
  
Schedule of Nonvested Share Activity [Table Text Block]
(dollar in thousands, except per share amounts)
 
T
hree Months Ended March 31,
 
 
 
2017
 
 
2016
 
Numerator
                
Net loss attributable to common stockholders
   $
(469
 )   $
(973
 )
Less: net income attributable to participating securities
    
(43
 )    
(41
 )
Subtotal    $
(512
 )   $
(1,014
 )
Denominator
                
Weighted average common shares outstanding
    
14,644
      
11,423
  
                 
Basic and diluted loss per share attributable to common stockholders
   $
(0.03
 )   $
(0.09
 )