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Note 11 - Reportable Operating Segments (Tables)
 9 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
Three Months Ended
    
Nine Months Ended
  
   
September 30,
    
September 30,
  
   
(unaudited)
    
(unaudited)
  
   
2020
    
2019
    
2020
    
2019
  
   
(in thousands)
    
(in thousands)
  
Operating Segment Revenues
                                
Real estate
   $
15
     $
305
     $
173
     $
671
  
Leasing
    
1,448
      
2,167
      
4,620
      
6,121
  
Resort amenities and other
    
234
      
242
      
648
      
751
  
Total Operating Segment Revenues
   $
1,697
     $
2,714
     $
5,441
     $
7,543
  
Operating Segment Income (Loss)
                                
Real estate
   $
(71
 )   $
(47
 )   $
(284
 )   $
(202
 )
Leasing
    
777
      
1,374
      
2,342
      
3,888
  
Resort amenities and other
    
82
      
23
      
(245
 )    
-
  
Total Operating Segment Income
   $
788
     $
1,350
     $
1,813
     $
3,686