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Note 4 - Real Estate Under Development (Tables)
 3 Months Ended
Mar. 31, 2018
Notes Tables  
Real Estate Held for Development [Table Text Block]
Property Name
Location
  
March 31,
2018
    
December 31,
2017
  
Grand Parkway Marketplace
Spring, TX
   $
45,063
     $
43,403
  
Dania Pointe (1)
Dania Beach, FL
    
184,934
      
152,841
  
Mill Station
Owings Mills, MD
    
35,689
      
34,347
  
Lincoln Square
Philadelphia, PA
    
118,764
      
90,479
  
Avenues Walk (2)
Jacksonville, FL
    
48,573
      
48,573
  
Promenade at Christiana (3)
New Castle, DE
    
32,659
      
32,875
  
Total
(4)
 
  
$
465,682
    
$
402,518