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Note 10 - Reportable Operating Segments (Tables)
9 Months Ended
Sep. 30, 2018
Notes Tables  
Schedule of Segment Reporting Information, by Segment [Table Text Block]
   
Three Months
   
Nine Months
 
   
Ended September 30,
   
Ended September 30,
 
   
2018
   
2017
   
2018
   
2017
 
   
(in thousands)
   
(in thousands)
 
Operating Segment Revenues
                               
Real estate
  $
66
    $
290
    $
402
    $
14,281
 
Leasing
   
1,552
     
1,353
     
4,605
     
4,309
 
Utilities
   
900
     
898
     
2,414
     
2,403
 
Resort amenities and other
   
292
     
299
     
891
     
866
 
Total Operating Segment Revenues
  $
2,810
    $
2,840
    $
8,312
    $
21,859
 
Operating Segment Income (Loss)
                               
Real estate
  $
(1,245
)   $
(38
)   $
(1,418
)   $
13,065
 
Leasing
   
932
     
692
     
2,701
     
2,592
 
Utilities
   
307
     
410
     
780
     
936
 
Resort amenities and other
   
63
     
57
     
78
     
78
 
Total Operating Segment Income
  $
57
    $
1,121
    $
2,141
    $
16,671